Profile for Submit Communication Alert API

This profile is a bundle resource that is used to hold 1 or 2 entries: Communication and Observation (optional) resources, for the sending of communication alerts together with the vital signs readings (if applicable) in a single transaction (See API - Submit Communication Alert).

The Communication resource defines the communication alert for the remote clinical monitoring of the patient. Details like the type of alert (See RCM Communication Alert Codes) and the patient id will be used. The observation id will also be stored depending on the alert code (i.e "Threshold" and "Missed Read").

The Observation resource defines the vital signs readings of the patient. Details like the type of vital signs (i.e blood pressure), the readings for each vital sign (i.e systolic blood pressure, diastolic blood pressure), the device guid that took the readings and the subject patient id will be stored.

In the event the readings are missed, the effective period will be used to store the start and end date of the missed readings with the data absent reason as "unknown".

These are the details for these resources:

Name	Canonical_URL	Status	Version
BundleCommunicationObservation	http://fhir.synapxe.sg/StructureDefinition/profile-bundle-communication-observation	active	5.0.0
Communication	http://fhir.synapxe.sg/StructureDefinition/profile-communication	active	5.0.0
Observation	http://fhir.synapxe.sg/StructureDefinition/profile-observation	active	5.0.0

Resource content

These are different views on these resources:

Bundle

BundleCommunicationObservation (Bundle)	I		Bundle	There are no (further) constraints on this element Element id Bundle Short description Contains a collection of resources Definition A container for a collection of resources. Data type Bundle Constraints bdl-7: FullUrl must be unique in a bundle, or else entries with the same fullUrl must have different meta.versionId (except in history bundles) `(type = 'history') or entry.where(fullUrl.exists()).select(fullUrl&iif(resource.meta.versionId.exists(), resource.meta.versionId, '')).isDistinct()` bdl-9: A document must have an identifier with a system and a value `type = 'document' implies (identifier.system.exists() and identifier.value.exists())` bdl-17: Use and meaning of issues for documents has not been validated because the content will not be rendered in the document. `type = 'document' implies issues.empty()` bdl-16: Issue.severity for all issues within the OperationOutcome must be either 'information' or 'warning'. `issues.exists() implies (issues.issue.severity = 'information' or issues.issue.severity = 'warning')` bdl-18: Self link is required for searchsets. `type = 'searchset' implies link.where(relation = 'self' and url.exists()).exists()` bdl-13: A subscription-notification must have a SubscriptionStatus as the first resource `type = 'subscription-notification' implies entry.first().resource.is(SubscriptionStatus)` bdl-12: A message must have a MessageHeader as the first resource `type = 'message' implies entry.first().resource.is(MessageHeader)` bdl-15: Bundle resources where type is not transaction, transaction-response, batch, or batch-response or when the request is a POST SHALL have Bundle.entry.fullUrl populated `type='transaction' or type='transaction-response' or type='batch' or type='batch-response' or entry.all(fullUrl.exists() or request.method='POST')` bdl-14: entry.request.method PATCH not allowed for history `type = 'history' implies entry.request.method != 'PATCH'` bdl-11: A document must have a Composition as the first resource `type = 'document' implies entry.first().resource.is(Composition)` bdl-10: A document must have a date `type = 'document' implies (timestamp.hasValue())` bdl-3d: For collections of type transaction-response or batch-response, all entries must contain response elements `type in ('transaction-response' \| 'batch-response') implies entry.all(response.exists())` bdl-1: total only when a search or history `total.empty() or (type = 'searchset') or (type = 'history')` bdl-2: entry.search only when a search `(type = 'searchset') or entry.search.empty()` bdl-3a: For collections of type document, message, searchset or collection, all entries must contain resources, and not have request or response elements `type in ('document' \| 'message' \| 'searchset' \| 'collection') implies entry.all(resource.exists() and request.empty() and response.empty())` bdl-3c: For collections of type transaction or batch, all entries must contain request elements, and resources if the method is POST, PUT or PATCH `type in ('transaction' \| 'batch') implies entry.all(request.method.exists() and ((request.method in ('POST' \| 'PATCH' \| 'PUT')) = resource.exists()))` bdl-3b: For collections of type history, all entries must contain request or response elements, and resources if the method is POST, PUT or PATCH `type = 'history' implies entry.all(request.exists() and response.exists() and ((request.method in ('POST' \| 'PATCH' \| 'PUT')) = resource.exists()))` Mappings rim: n/a rim: Entity. Role, or Act w5: infrastructure.structure v2: N/A rim: N/A cda: ClinicalDocument, if bundle.type = document
id	Σ	0..1	id	There are no (further) constraints on this element Element id Bundle.id Short description Logical id of this artifact Definition The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes. Comments Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case. Data type id
meta	Σ	0..1	Meta	There are no (further) constraints on this element Element id Bundle.meta Short description Metadata about the resource Definition The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource. Data type Meta Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
implicitRules	Σ ?!	0..1	uri	There are no (further) constraints on this element Element id Bundle.implicitRules Short description A set of rules under which this content was created Definition A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc. Comments Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of its narrative along with other profiles, value sets, etc. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
language		0..1	codeBinding	There are no (further) constraints on this element Element id Bundle.language Short description Language of the resource content Definition The base language in which the resource is written. Comments Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute). Data type code Binding IETF language tag for a human language AllLanguages (required) Additional bindings: CommonLanguages (starter) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
identifier	Σ I	0..0	Identifier	There are no (further) constraints on this element Element id Bundle.identifier Short description Persistent identifier for the bundle Definition A persistent identifier for the bundle that won't change as a bundle is copied from server to server. Comments Persistent identity generally only matters for batches of type Document, Message, and Collection. It would not normally be populated for search and history results and servers ignore Bundle.identifier when processing batches and transactions. For Documents the .identifier SHALL be populated such that the .identifier is globally unique. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()` Mappings rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier w5: FiveWs.identifier cda: ClinicalDocument.id
type	Σ I	1..1	codeBindingFixed Value	Element id Bundle.type Short description document \| message \| transaction \| transaction-response \| batch \| batch-response \| history \| searchset \| collection \| subscription-notification Definition Indicates the purpose of this bundle - how it is intended to be used. Comments It's possible to use a bundle for other purposes (e.g. a document can be accepted as a transaction). This is primarily defined so that there can be specific rules for some of the bundle types. Data type code Binding Indicates the purpose of a bundle - how it is intended to be used. BundleType (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value transaction Mappings rim: n/a w5: FiveWs.class
timestamp	Σ I	0..0	instant	There are no (further) constraints on this element Element id Bundle.timestamp Short description When the bundle was assembled Definition The date/time that the bundle was assembled - i.e. when the resources were placed in the bundle. Comments For many bundles, the timestamp is equal to .meta.lastUpdated, because they are not stored (e.g. search results). When a bundle is placed in a persistent store, .meta.lastUpdated will be usually be changed by the server. When the bundle is a message, a middleware agent altering the message (even if not stored) SHOULD update .meta.lastUpdated. .timestamp is used to track the original time of the Bundle, and SHOULD be populated. Usage: document : the date the document was created. Note: the composition may predate the document, or be associated with multiple documents. The date of the composition - the authoring time - may be earlier than the document assembly time message : the date that the content of the message was assembled. This date is not changed by middleware engines unless they add additional data that changes the meaning of the time of the message history : the date that the history was assembled. This time would be used as the _since time to ask for subsequent updates searchset : the time that the search set was assembled. Note that different pages MAY have different timestamps but need not. Having different timestamps does not imply that subsequent pages will represent or include changes made since the initial query transaction \| transaction-response \| batch \| batch-response \| collection : no particular assigned meaning The timestamp value should be greater than the lastUpdated and other timestamps in the resources in the bundle, and it should be equal or earlier than the .meta.lastUpdated on the Bundle itself. Data type instant Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a w5: FiveWs.init cda: ClinicalDocument.effectiveTime
total	Σ I	0..0	unsignedInt	There are no (further) constraints on this element Element id Bundle.total Short description If search, the total number of matches Definition If a set of search matches, this is the (potentially estimated) total number of entries of type 'match' across all pages in the search. It does not include search.mode = 'include' or 'outcome' entries and it does not provide a count of the number of entries in the Bundle. Comments Only used if the bundle is a search result set. The total does not include resources such as OperationOutcome and included resources, only the total number of matching resources. Data type unsignedInt Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
link	Σ I	0..0	BackboneElement	There are no (further) constraints on this element Element id Bundle.link Short description Links related to this Bundle Definition A series of links that provide context to this bundle. Comments Both Bundle.link and Bundle.entry.link are defined to support providing additional context when Bundles are used (e.g. HATEOAS). Bundle.entry.link corresponds to links found in the HTTP header if the resource in the entry was read directly. This specification defines some specific uses of Bundle.link for searching and paging, but no specific uses for Bundle.entry.link, and no defined function in a transaction - the meaning is implementation specific. The behavior of navigation link types (next/prev/first/last) are well defined for searchset and history Bundles but are not currently defined for other types. Implementers who choose to use such link relationships for other bundle types will need to negotiate behavior with their interoperability partners. Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
entry	Σ I	1..2	BackboneElement	There are no (further) constraints on this element Element id Bundle.entry Short description Entry in the bundle - will have a resource or information Definition An entry in a bundle resource - will either contain a resource or information about a resource (transactions and history only). Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` bdl-8: fullUrl cannot be a version specific reference `fullUrl.exists() implies fullUrl.contains('/_history/').not()` bdl-5: must be a resource unless there's a request or response `resource.exists() or request.exists() or response.exists()` Mappings rim: n/a
id		0..1	string	There are no (further) constraints on this element Element id Bundle.entry.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Bundle.entry.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
modifierExtension	Σ ?! I	0..*	Extension	There are no (further) constraints on this element Element id Bundle.entry.modifierExtension Short description Extensions that cannot be ignored even if unrecognized Alternate names extensions, user content, modifiers Definition May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Requirements Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
link	Σ	0..0	see (link)	There are no (further) constraints on this element Element id Bundle.entry.link Short description Links related to this entry Definition A series of links that provide context to this entry.
fullUrl	Σ I	0..1	uri	There are no (further) constraints on this element Element id Bundle.entry.fullUrl Short description URI for resource (e.g. the absolute URL server address, URI for UUID/OID, etc.) Definition The Absolute URL for the resource. Except for transactions and batches, each entry in a Bundle must have a fullUrl. The fullUrl SHALL NOT disagree with the id in the resource - i.e. if the fullUrl is not a urn:uuid, the URL shall be version-independent URL consistent with the Resource.id. The fullUrl is a version independent reference to the resource. Even when not required, fullUrl MAY be set to a urn:uuid to allow referencing entries in a transaction. The fullUrl can be an arbitrary URI and is not limited to urn:uuid, urn:oid, http, and https. The fullUrl element SHALL have a value except when: invoking a create invoking or responding to an operation where the body is not a single identified resource invoking or returning the results of a search or history operation. Comments fullUrl might not be unique in the context of a resource. Note that since FHIR resources do not need to be served through the FHIR API, the fullURL might be a URN or an absolute URL that does not end with the logical id of the resource (Resource.id). However, but if the fullUrl does look like a RESTful server URL (e.g. meets the regex, then the 'id' portion of the fullUrl SHALL end with the Resource.id. Note that the fullUrl is not the same as the canonical URL - it's an absolute url for an endpoint serving the resource (these will happen to have the same value on the canonical server for the resource with the canonical URL). Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
resource	Σ I	0..1	http://fhir.synapxe.sg/StructureDefinition/profile-communication, http://fhir.synapxe.sg/StructureDefinition/profile-observation	Element id Bundle.entry.resource Short description A resource in the bundle Definition The Resource for the entry. The purpose/meaning of the resource is determined by the Bundle.type. This is allowed to be a Parameters resource if and only if it is referenced by something else within the Bundle that provides context/meaning. Data type http://fhir.synapxe.sg/StructureDefinition/profile-communication, http://fhir.synapxe.sg/StructureDefinition/profile-observation Mappings rim: n/a rim: Entity. Role, or Act
search	Σ I	0..0	BackboneElement	There are no (further) constraints on this element Element id Bundle.entry.search Short description Search related information Definition Information about the search process that lead to the creation of this entry. Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
request	Σ I	1..1	BackboneElement	There are no (further) constraints on this element Element id Bundle.entry.request Short description Additional execution information (transaction/batch/history) Definition Additional information about how this entry should be processed as part of a transaction or batch. For history, it shows how the entry was processed to create the version contained in the entry. Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
id		0..1	string	There are no (further) constraints on this element Element id Bundle.entry.request.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Bundle.entry.request.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
modifierExtension	Σ ?! I	0..*	Extension	There are no (further) constraints on this element Element id Bundle.entry.request.modifierExtension Short description Extensions that cannot be ignored even if unrecognized Alternate names extensions, user content, modifiers Definition May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Requirements Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
method	Σ I	1..1	codeBinding	There are no (further) constraints on this element Element id Bundle.entry.request.method Short description GET \| HEAD \| POST \| PUT \| DELETE \| PATCH Definition In a transaction or batch, this is the HTTP action to be executed for this entry. In a history bundle, this indicates the HTTP action that occurred. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* code Binding HTTP verbs (in the HTTP command line). See HTTP rfc for details. HTTPVerb (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
url	Σ	1..1	uri	There are no (further) constraints on this element Element id Bundle.entry.request.url Short description URL for HTTP equivalent of this entry Definition The URL for this entry, relative to the root (the address to which the request is posted). Comments E.g. for a Patient Create, the method would be "POST" and the URL would be "Patient". For a Patient Update, the method would be PUT and the URL would be "Patient/[id]". Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
ifNoneMatch	Σ	0..1	string	There are no (further) constraints on this element Element id Bundle.entry.request.ifNoneMatch Short description For managing cache validation Definition If the ETag values match, return a 304 Not Modified status. See the API documentation for "Conditional Read". Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
ifModifiedSince	Σ	0..1	instant	There are no (further) constraints on this element Element id Bundle.entry.request.ifModifiedSince Short description For managing cache currency Definition Only perform the operation if the last updated date matches. See the API documentation for "Conditional Read". Comments Note: This is intended for where precisely observed times are required, typically system logs etc., and not human-reported times - for them, see date and dateTime (which can be as precise as instant, but is not required to be) below. UTC offset is always required Data type instant Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
ifMatch	Σ	0..1	string	There are no (further) constraints on this element Element id Bundle.entry.request.ifMatch Short description For managing update contention Definition Only perform the operation if the Etag value matches. For more information, see the API section "Managing Resource Contention". Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
ifNoneExist	Σ	0..1	string	There are no (further) constraints on this element Element id Bundle.entry.request.ifNoneExist Short description For conditional creates Definition Instruct the server not to perform the create if a specified resource already exists. For further information, see the API documentation for "Conditional Create". This is just the query portion of the URL - what follows the "?" (not including the "?"). Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
response	Σ I	0..0	BackboneElement	There are no (further) constraints on this element Element id Bundle.entry.response Short description Results of execution (transaction/batch/history) Definition Indicates the results of processing the corresponding 'request' entry in the batch or transaction being responded to or what the results of an operation where when returning history. Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
signature	Σ	0..0	Signature	There are no (further) constraints on this element Element id Bundle.signature Short description Digital Signature Definition Digital Signature - base64 encoded. XML-DSig or a JWS. Requirements A Signature holds an electronic representation of a signature and its supporting context in a FHIR accessible form. The signature may either be a cryptographic type (XML DigSig or a JWS), which is able to provide non-repudiation proof, or it may be a graphical image that represents a signature or a signature process. This element allows capturing signatures on documents, messages, transactions or even search responses, to support content-authentication, non-repudiation or other business cases. This is primarily relevant where the bundle may travel through multiple hops or via other mechanisms where HTTPS non-repudiation is insufficient. Comments The signature could be created by the "author" of the bundle or by the originating device. Requirements around inclusion of a signature, verification of signatures and treatment of signed/non-signed bundles is implementation-environment specific. Data type Signature Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
issues	Σ I	0..0	OperationOutcome	There are no (further) constraints on this element Element id Bundle.issues Short description Issues with the Bundle Definition Captures issues and warnings that relate to the construction of the Bundle and the content within it. Comments Usage notes: These issues and warnings must apply to the Bundle as a whole, not to individual entries.Messages relating to the processing of individual entries (e.g. in a batch or transaction) SHALL be reported in the entry.response.outcome for that entry. If there are errors that arise in the creation of the Bundle, then that should be handled by an OperationOutcome being returned instead of the Bundle. Data type OperationOutcome Constraints dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources `contained.contained.empty()` dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()` dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource `contained.where((('#'+id in (%resource.descendants().reference \| %resource.descendants().ofType(canonical) \| %resource.descendants().ofType(uri) \| %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()` dom-6: A resource should have narrative for robust management text.`div`.exists() dom-5: If a resource is contained in another resource, it SHALL NOT have a security label `contained.meta.security.empty()` Mappings rim: n/a rim: Entity. Role, or Act rim: Entity, Role, or Act w5: infrastructure.exchange rim: Grouping is handled through multiple repetitions from whatever context references the outcomes (no specific grouper required)

Bundle
Definition	A container for a collection of resources.
Cardinality	0...*
Invariants	bdl-7: FullUrl must be unique in a bundle, or else entries with the same fullUrl must have different meta.versionId (except in history bundles) `(type = 'history') or entry.where(fullUrl.exists()).select(fullUrl&iif(resource.meta.versionId.exists(), resource.meta.versionId, '')).isDistinct()` bdl-9: A document must have an identifier with a system and a value `type = 'document' implies (identifier.system.exists() and identifier.value.exists())` bdl-17: Use and meaning of issues for documents has not been validated because the content will not be rendered in the document. `type = 'document' implies issues.empty()` bdl-16: Issue.severity for all issues within the OperationOutcome must be either 'information' or 'warning'. `issues.exists() implies (issues.issue.severity = 'information' or issues.issue.severity = 'warning')` bdl-18: Self link is required for searchsets. `type = 'searchset' implies link.where(relation = 'self' and url.exists()).exists()` bdl-13: A subscription-notification must have a SubscriptionStatus as the first resource `type = 'subscription-notification' implies entry.first().resource.is(SubscriptionStatus)` bdl-12: A message must have a MessageHeader as the first resource `type = 'message' implies entry.first().resource.is(MessageHeader)` bdl-15: Bundle resources where type is not transaction, transaction-response, batch, or batch-response or when the request is a POST SHALL have Bundle.entry.fullUrl populated `type='transaction' or type='transaction-response' or type='batch' or type='batch-response' or entry.all(fullUrl.exists() or request.method='POST')` bdl-14: entry.request.method PATCH not allowed for history `type = 'history' implies entry.request.method != 'PATCH'` bdl-11: A document must have a Composition as the first resource `type = 'document' implies entry.first().resource.is(Composition)` bdl-10: A document must have a date `type = 'document' implies (timestamp.hasValue())` bdl-3d: For collections of type transaction-response or batch-response, all entries must contain response elements `type in ('transaction-response' \| 'batch-response') implies entry.all(response.exists())` bdl-1: total only when a search or history `total.empty() or (type = 'searchset') or (type = 'history')` bdl-2: entry.search only when a search `(type = 'searchset') or entry.search.empty()` bdl-3a: For collections of type document, message, searchset or collection, all entries must contain resources, and not have request or response elements `type in ('document' \| 'message' \| 'searchset' \| 'collection') implies entry.all(resource.exists() and request.empty() and response.empty())` bdl-3c: For collections of type transaction or batch, all entries must contain request elements, and resources if the method is POST, PUT or PATCH `type in ('transaction' \| 'batch') implies entry.all(request.method.exists() and ((request.method in ('POST' \| 'PATCH' \| 'PUT')) = resource.exists()))` bdl-3b: For collections of type history, all entries must contain request or response elements, and resources if the method is POST, PUT or PATCH `type = 'history' implies entry.all(request.exists() and response.exists() and ((request.method in ('POST' \| 'PATCH' \| 'PUT')) = resource.exists()))`
Mappings	rim: n/a rim: Entity. Role, or Act w5: infrastructure.structure v2: N/A rim: N/A cda: ClinicalDocument, if bundle.type = document
Bundle.id
Definition	The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.
Cardinality	0...1
Type	id
Summary	True
Comments	Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case.
Bundle.meta
Definition	The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.
Cardinality	0...1
Type	Meta
Summary	True
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Bundle.implicitRules
Definition	A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.
Cardinality	0...1
Type	uri
Modifier	True
Summary	True
Comments	Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of its narrative along with other profiles, value sets, etc.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.language
Definition	The base language in which the resource is written.
Cardinality	0...1
Type	code
Binding	IETF language tag for a human language AllLanguages (required)
Comments	Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.identifier
Definition	A persistent identifier for the bundle that won't change as a bundle is copied from server to server.
Cardinality	0...0
Type	Identifier
Summary	True
Comments	Persistent identity generally only matters for batches of type Document, Message, and Collection. It would not normally be populated for search and history results and servers ignore Bundle.identifier when processing batches and transactions. For Documents the .identifier SHALL be populated such that the .identifier is globally unique.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()`
Mappings	rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier w5: FiveWs.identifier cda: ClinicalDocument.id
Bundle.type
Definition	Indicates the purpose of this bundle - how it is intended to be used.
Cardinality	1...1
Type	code
Binding	Indicates the purpose of a bundle - how it is intended to be used. BundleType (required)
Summary	True
Comments	It's possible to use a bundle for other purposes (e.g. a document can be accepted as a transaction). This is primarily defined so that there can be specific rules for some of the bundle types.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	transaction
Mappings	rim: n/a w5: FiveWs.class
Bundle.timestamp
Definition	The date/time that the bundle was assembled - i.e. when the resources were placed in the bundle.
Cardinality	0...0
Type	instant
Summary	True
Comments	For many bundles, the timestamp is equal to .meta.lastUpdated, because they are not stored (e.g. search results). When a bundle is placed in a persistent store, .meta.lastUpdated will be usually be changed by the server. When the bundle is a message, a middleware agent altering the message (even if not stored) SHOULD update .meta.lastUpdated. .timestamp is used to track the original time of the Bundle, and SHOULD be populated. Usage: document : the date the document was created. Note: the composition may predate the document, or be associated with multiple documents. The date of the composition - the authoring time - may be earlier than the document assembly time message : the date that the content of the message was assembled. This date is not changed by middleware engines unless they add additional data that changes the meaning of the time of the message history : the date that the history was assembled. This time would be used as the _since time to ask for subsequent updates searchset : the time that the search set was assembled. Note that different pages MAY have different timestamps but need not. Having different timestamps does not imply that subsequent pages will represent or include changes made since the initial query transaction \| transaction-response \| batch \| batch-response \| collection : no particular assigned meaning The timestamp value should be greater than the lastUpdated and other timestamps in the resources in the bundle, and it should be equal or earlier than the .meta.lastUpdated on the Bundle itself.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a w5: FiveWs.init cda: ClinicalDocument.effectiveTime
Bundle.total
Definition	If a set of search matches, this is the (potentially estimated) total number of entries of type 'match' across all pages in the search. It does not include search.mode = 'include' or 'outcome' entries and it does not provide a count of the number of entries in the Bundle.
Cardinality	0...0
Type	unsignedInt
Summary	True
Comments	Only used if the bundle is a search result set. The total does not include resources such as OperationOutcome and included resources, only the total number of matching resources.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.link
Definition	A series of links that provide context to this bundle.
Cardinality	0...0
Type	BackboneElement
Summary	True
Comments	Both Bundle.link and Bundle.entry.link are defined to support providing additional context when Bundles are used (e.g. HATEOAS). Bundle.entry.link corresponds to links found in the HTTP header if the resource in the entry was read directly. This specification defines some specific uses of Bundle.link for searching and paging, but no specific uses for Bundle.entry.link, and no defined function in a transaction - the meaning is implementation specific. The behavior of navigation link types (next/prev/first/last) are well defined for searchset and history Bundles but are not currently defined for other types. Implementers who choose to use such link relationships for other bundle types will need to negotiate behavior with their interoperability partners.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.link.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Bundle.link.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Bundle.link.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content, modifiers
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Bundle.link.relation
Definition	A name which details the functional use for this link - see [http://www.iana.org/assignments/link-relations/link-relations.xhtml#link-relations-1](http://www.iana.org/assignments/link-relations/link-relations.xhtml#link-relations-1).
Cardinality	1...1
Type	code
Binding	LinkRelationTypes (required)
Summary	True
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.link.url
Definition	The reference details for the link.
Cardinality	1...1
Type	uri
Summary	True
Comments	see http://en.wikipedia.org/wiki/Uniform_resource_identifier
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry
Definition	An entry in a bundle resource - will either contain a resource or information about a resource (transactions and history only).
Cardinality	1...2
Type	BackboneElement
Summary	True
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` bdl-8: fullUrl cannot be a version specific reference `fullUrl.exists() implies fullUrl.contains('/_history/').not()` bdl-5: must be a resource unless there's a request or response `resource.exists() or request.exists() or response.exists()`
Mappings	rim: n/a
Bundle.entry.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Bundle.entry.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Bundle.entry.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content, modifiers
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Bundle.entry.link
Definition	A series of links that provide context to this entry.
Cardinality	0...0
Type	see (link)
Summary	True
Bundle.entry.fullUrl
Definition	The Absolute URL for the resource. Except for transactions and batches, each entry in a Bundle must have a fullUrl. The fullUrl SHALL NOT disagree with the id in the resource - i.e. if the fullUrl is not a urn:uuid, the URL shall be version-independent URL consistent with the Resource.id. The fullUrl is a version independent reference to the resource. Even when not required, fullUrl MAY be set to a urn:uuid to allow referencing entries in a transaction. The fullUrl can be an arbitrary URI and is not limited to urn:uuid, urn:oid, http, and https. The fullUrl element SHALL have a value except when: * invoking a create * invoking or responding to an operation where the body is not a single identified resource * invoking or returning the results of a search or history operation.
Cardinality	0...1
Type	uri
Summary	True
Comments	fullUrl might not be unique in the context of a resource. Note that since FHIR resources do not need to be served through the FHIR API, the fullURL might be a URN or an absolute URL that does not end with the logical id of the resource (Resource.id). However, but if the fullUrl does look like a RESTful server URL (e.g. meets the regex, then the 'id' portion of the fullUrl SHALL end with the Resource.id. Note that the fullUrl is not the same as the canonical URL - it's an absolute url for an endpoint serving the resource (these will happen to have the same value on the canonical server for the resource with the canonical URL).
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.resource
Definition	The Resource for the entry. The purpose/meaning of the resource is determined by the Bundle.type. This is allowed to be a Parameters resource if and only if it is referenced by something else within the Bundle that provides context/meaning.
Cardinality	0...1
Type	http://fhir.synapxe.sg/StructureDefinition/profile-communication, http://fhir.synapxe.sg/StructureDefinition/profile-observation
Summary	True
Mappings	rim: n/a rim: Entity. Role, or Act
Bundle.entry.search
Definition	Information about the search process that lead to the creation of this entry.
Cardinality	0...0
Type	BackboneElement
Summary	True
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.search.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Bundle.entry.search.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Bundle.entry.search.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content, modifiers
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Bundle.entry.search.mode
Definition	Why this entry is in the result set - whether it's included as a match or because of an _include requirement, or to convey information or warning information about the search process.
Cardinality	0...1
Type	code
Binding	Why an entry is in the result set - whether it's included as a match or because of an _include requirement, or to convey information or warning information about the search process. SearchEntryMode (required)
Summary	True
Comments	There is only one mode. In some corner cases, a resource may be included because it is both a match and an include. In these circumstances, 'match' takes precedence.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.search.score
Definition	When searching, the server's search ranking score for the entry.
Cardinality	0...1
Type	decimal
Summary	True
Comments	Servers are not required to return a ranking score. 1 is most relevant, and 0 is least relevant. Often, search results are sorted by score, but the client may specify a different sort order. See Patient Match for the EMPI search which relates to this element.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.request
Definition	Additional information about how this entry should be processed as part of a transaction or batch. For history, it shows how the entry was processed to create the version contained in the entry.
Cardinality	1...1
Type	BackboneElement
Summary	True
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.request.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Bundle.entry.request.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Bundle.entry.request.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content, modifiers
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Bundle.entry.request.method
Definition	In a transaction or batch, this is the HTTP action to be executed for this entry. In a history bundle, this indicates the HTTP action that occurred.
Cardinality	1...1
Type	code
Binding	HTTP verbs (in the HTTP command line). See HTTP rfc for details. HTTPVerb (required)
Summary	True
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.request.url
Definition	The URL for this entry, relative to the root (the address to which the request is posted).
Cardinality	1...1
Type	uri
Summary	True
Comments	E.g. for a Patient Create, the method would be "POST" and the URL would be "Patient". For a Patient Update, the method would be PUT and the URL would be "Patient/[id]".
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.request.ifNoneMatch
Definition	If the ETag values match, return a 304 Not Modified status. See the API documentation for ["Conditional Read"](http.html#cread).
Cardinality	0...1
Type	string
Summary	True
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.request.ifModifiedSince
Definition	Only perform the operation if the last updated date matches. See the API documentation for ["Conditional Read"](http.html#cread).
Cardinality	0...1
Type	instant
Summary	True
Comments	Note: This is intended for where precisely observed times are required, typically system logs etc., and not human-reported times - for them, see date and dateTime (which can be as precise as instant, but is not required to be) below. UTC offset is always required
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.request.ifMatch
Definition	Only perform the operation if the Etag value matches. For more information, see the API section ["Managing Resource Contention"](http.html#concurrency).
Cardinality	0...1
Type	string
Summary	True
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.request.ifNoneExist
Definition	Instruct the server not to perform the create if a specified resource already exists. For further information, see the API documentation for ["Conditional Create"](http.html#ccreate). This is just the query portion of the URL - what follows the "?" (not including the "?").
Cardinality	0...1
Type	string
Summary	True
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.response
Definition	Indicates the results of processing the corresponding 'request' entry in the batch or transaction being responded to or what the results of an operation where when returning history.
Cardinality	0...0
Type	BackboneElement
Summary	True
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.response.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Bundle.entry.response.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Bundle.entry.response.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content, modifiers
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Bundle.entry.response.status
Definition	The status code returned by processing this entry. The status SHALL start with a 3 digit HTTP code (e.g. 404) and may contain the standard HTTP description associated with the status code.
Cardinality	1...1
Type	string
Summary	True
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.response.location
Definition	The location header created by processing this operation, populated if the operation returns a location.
Cardinality	0...1
Type	uri
Summary	True
Comments	see http://en.wikipedia.org/wiki/Uniform_resource_identifier
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.response.etag
Definition	The Etag for the resource, if the operation for the entry produced a versioned resource (see [Resource Metadata and Versioning](http.html#versioning) and [Managing Resource Contention](http.html#concurrency)).
Cardinality	0...1
Type	string
Summary	True
Comments	Etags match the Resource.meta.versionId. The ETag has to match the version id in the header if a resource is included.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.response.lastModified
Definition	The date/time that the resource was modified on the server.
Cardinality	0...1
Type	instant
Summary	True
Comments	This has to match the same time in the meta header (meta.lastUpdated) if a resource is included.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Bundle.entry.response.outcome
Definition	An OperationOutcome containing hints and warnings produced as part of processing this entry in a batch or transaction.
Cardinality	0...1
Type	Resource
Summary	True
Comments	For a POST/PUT operation, this is the equivalent outcome that would be returned for prefer = operationoutcome - except that the resource is always returned whether or not the outcome is returned. This outcome is not used for error responses in batch/transaction, only for hints and warnings. In a batch operation, the error will be in Bundle.entry.response, and for transaction, there will be a single OperationOutcome instead of a bundle in the case of an error.
Mappings	rim: n/a rim: Entity. Role, or Act
Bundle.signature
Definition	Digital Signature - base64 encoded. XML-DSig or a JWS.
Cardinality	0...0
Type	Signature
Summary	True
Requirements	A Signature holds an electronic representation of a signature and its supporting context in a FHIR accessible form. The signature may either be a cryptographic type (XML DigSig or a JWS), which is able to provide non-repudiation proof, or it may be a graphical image that represents a signature or a signature process. This element allows capturing signatures on documents, messages, transactions or even search responses, to support content-authentication, non-repudiation or other business cases. This is primarily relevant where the bundle may travel through multiple hops or via other mechanisms where HTTPS non-repudiation is insufficient.
Comments	The signature could be created by the "author" of the bundle or by the originating device. Requirements around inclusion of a signature, verification of signatures and treatment of signed/non-signed bundles is implementation-environment specific.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Bundle.issues
Definition	Captures issues and warnings that relate to the construction of the Bundle and the content within it.
Cardinality	0...0
Type	OperationOutcome
Summary	True
Comments	Usage notes: These issues and warnings must apply to the Bundle as a whole, not to individual entries.Messages relating to the processing of individual entries (e.g. in a batch or transaction) SHALL be reported in the entry.response.outcome for that entry. If there are errors that arise in the creation of the Bundle, then that should be handled by an OperationOutcome being returned instead of the Bundle.
Invariants	dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources `contained.contained.empty()` dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()` dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource `contained.where((('#'+id in (%resource.descendants().reference \| %resource.descendants().ofType(canonical) \| %resource.descendants().ofType(uri) \| %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()` dom-6: A resource should have narrative for robust management text.`div`.exists() dom-5: If a resource is contained in another resource, it SHALL NOT have a security label `contained.meta.security.empty()`
Mappings	rim: n/a rim: Entity. Role, or Act rim: Entity, Role, or Act w5: infrastructure.exchange rim: Grouping is handled through multiple repetitions from whatever context references the outcomes (no specific grouper required)

<StructureDefinition xmlns="http://hl7.org/fhir">
    <url value="http://fhir.synapxe.sg/StructureDefinition/profile-bundle-communication-observation" />
    <name value="BundleCommunicationObservation" />
    <status value="draft" />
    <description value="This bundle is used to hold 1 or 2 entries: Communication and Observation (optional) resources, for the sending of communication alerts together with the vital signs readings (if applicable) in a single transaction" />
    <fhirVersion value="5.0.0" />
    <kind value="resource" />
    <abstract value="false" />
    <type value="Bundle" />
    <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Bundle" />
    <derivation value="constraint" />
    <differential>
        <element id="Bundle.identifier">
            <path value="Bundle.identifier" />
            <max value="0" />
        </element>
        <element id="Bundle.type">
            <path value="Bundle.type" />
            <fixedCode value="transaction" />
        </element>
        <element id="Bundle.timestamp">
            <path value="Bundle.timestamp" />
            <max value="0" />
        </element>
        <element id="Bundle.total">
            <path value="Bundle.total" />
            <max value="0" />
        </element>
        <element id="Bundle.link">
            <path value="Bundle.link" />
            <max value="0" />
        </element>
        <element id="Bundle.entry">
            <path value="Bundle.entry" />
            <min value="1" />
            <max value="2" />
        </element>
        <element id="Bundle.entry.link">
            <path value="Bundle.entry.link" />
            <max value="0" />
        </element>
        <element id="Bundle.entry.resource">
            <path value="Bundle.entry.resource" />
            <type>
                <code value="Resource" />
                <profile value="http://fhir.synapxe.sg/StructureDefinition/profile-communication" />
                <profile value="http://fhir.synapxe.sg/StructureDefinition/profile-observation" />
            </type>
        </element>
        <element id="Bundle.entry.search">
            <path value="Bundle.entry.search" />
            <max value="0" />
        </element>
        <element id="Bundle.entry.request">
            <path value="Bundle.entry.request" />
            <min value="1" />
        </element>
        <element id="Bundle.entry.response">
            <path value="Bundle.entry.response" />
            <max value="0" />
        </element>
        <element id="Bundle.signature">
            <path value="Bundle.signature" />
            <max value="0" />
        </element>
        <element id="Bundle.issues">
            <path value="Bundle.issues" />
            <max value="0" />
        </element>
    </differential>
</StructureDefinition>

{
    "resourceType": "StructureDefinition",
    "url": "http://fhir.synapxe.sg/StructureDefinition/profile-bundle-communication-observation",
    "name": "BundleCommunicationObservation",
    "status": "draft",
    "description": "This bundle is used to hold 1 or 2 entries: Communication and Observation (optional) resources, for the sending of communication alerts together with the vital signs readings (if applicable) in a single transaction",
    "fhirVersion": "5.0.0",
    "kind": "resource",
    "abstract": false,
    "type": "Bundle",
    "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Bundle",
    "derivation": "constraint",
    "differential": {
        "element":  [
            {
                "id": "Bundle.identifier",
                "path": "Bundle.identifier",
                "max": "0"
            },
            {
                "id": "Bundle.type",
                "path": "Bundle.type",
                "fixedCode": "transaction"
            },
            {
                "id": "Bundle.timestamp",
                "path": "Bundle.timestamp",
                "max": "0"
            },
            {
                "id": "Bundle.total",
                "path": "Bundle.total",
                "max": "0"
            },
            {
                "id": "Bundle.link",
                "path": "Bundle.link",
                "max": "0"
            },
            {
                "id": "Bundle.entry",
                "path": "Bundle.entry",
                "min": 1,
                "max": "2"
            },
            {
                "id": "Bundle.entry.link",
                "path": "Bundle.entry.link",
                "max": "0"
            },
            {
                "id": "Bundle.entry.resource",
                "path": "Bundle.entry.resource",
                "type":  [
                    {
                        "code": "Resource",
                        "profile":  [
                            "http://fhir.synapxe.sg/StructureDefinition/profile-communication",
                            "http://fhir.synapxe.sg/StructureDefinition/profile-observation"
                        ]
                    }
                ]
            },
            {
                "id": "Bundle.entry.search",
                "path": "Bundle.entry.search",
                "max": "0"
            },
            {
                "id": "Bundle.entry.request",
                "path": "Bundle.entry.request",
                "min": 1
            },
            {
                "id": "Bundle.entry.response",
                "path": "Bundle.entry.response",
                "max": "0"
            },
            {
                "id": "Bundle.signature",
                "path": "Bundle.signature",
                "max": "0"
            },
            {
                "id": "Bundle.issues",
                "path": "Bundle.issues",
                "max": "0"
            }
        ]
    }
}

BundleCommunicationObservation

Communication

Communication	I		Communication	There are no (further) constraints on this element Element id Communication Short description A clinical or business level record of information being transmitted or shared Definition A clinical or business level record of information being transmitted or shared; e.g. an alert that was sent to a responsible provider, a public health agency communication to a provider/reporter in response to a case report for a reportable condition. Data type Communication Constraints dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources `contained.contained.empty()` dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()` dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource `contained.where((('#'+id in (%resource.descendants().reference \| %resource.descendants().ofType(canonical) \| %resource.descendants().ofType(uri) \| %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()` dom-6: A resource should have narrative for robust management text.`div`.exists() dom-5: If a resource is contained in another resource, it SHALL NOT have a security label `contained.meta.security.empty()` Mappings rim: n/a rim: Entity. Role, or Act rim: Entity, Role, or Act workflow: Event w5: workflow.encounter
id	Σ	0..1	id	There are no (further) constraints on this element Element id Communication.id Short description Logical id of this artifact Definition The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes. Comments Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case. Data type id
meta	Σ	0..1	Meta	There are no (further) constraints on this element Element id Communication.meta Short description Metadata about the resource Definition The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource. Data type Meta Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
implicitRules	Σ ?!	0..1	uri	There are no (further) constraints on this element Element id Communication.implicitRules Short description A set of rules under which this content was created Definition A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc. Comments Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of its narrative along with other profiles, value sets, etc. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
language		0..1	codeBinding	There are no (further) constraints on this element Element id Communication.language Short description Language of the resource content Definition The base language in which the resource is written. Comments Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute). Data type code Binding IETF language tag for a human language AllLanguages (required) Additional bindings: CommonLanguages (starter) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
text	I	0..1	Narrative	There are no (further) constraints on this element Element id Communication.text Short description Text summary of the resource, for human interpretation Alternate names narrative, html, xhtml, display Definition A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety. Comments Contained resources do not have a narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later. Data type Narrative Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A rim: Act.text?
contained	I	0..*	Resource	There are no (further) constraints on this element Element id Communication.contained Short description Contained, inline Resources Alternate names inline resources, anonymous resources, contained resources Definition These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning. Comments This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags in their meta elements, but SHALL NOT have security labels. Data type Resource Mappings rim: n/a rim: Entity. Role, or Act rim: N/A
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Communication.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
modifierExtension	Σ ?! I	0..*	Extension	There are no (further) constraints on this element Element id Communication.modifierExtension Short description Extensions that cannot be ignored Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Requirements Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
identifier	Σ I	0..0	Identifier	There are no (further) constraints on this element Element id Communication.identifier Short description Unique identifier Definition Business identifiers assigned to this communication by the performer or other systems which remain constant as the resource is updated and propagates from server to server. Requirements Allows identification of the communication as it is known by various participating systems and in a way that remains consistent across servers. Comments This is a business identifier, not a resource identifier (see discussion). It is best practice for the identifier to only appear on a single resource instance, however business practices may occasionally dictate that multiple resource instances with the same identifier can exist - possibly even with different resource types. For example, multiple Patient and a Person resource instance might share the same social insurance number. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()` Mappings rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier workflow: Event.identifier w5: FiveWs.identifier
instantiatesCanonical	Σ	0..0	canonical(PlanDefinition \| ActivityDefinition \| Measure \| OperationDefinition \| Questionnaire)	There are no (further) constraints on this element Element id Communication.instantiatesCanonical Short description Instantiates FHIR protocol or definition Definition The URL pointing to a FHIR-defined protocol, guideline, orderset or other definition that is adhered to in whole or in part by this Communication. Comments see Canonical References Data type canonical(PlanDefinition \| ActivityDefinition \| Measure \| OperationDefinition \| Questionnaire) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Event.instantiatesCanonical rim: .outboundRelationship[typeCode=DEFN].target
instantiatesUri	Σ	0..0	uri	There are no (further) constraints on this element Element id Communication.instantiatesUri Short description Instantiates external protocol or definition Definition The URL pointing to an externally maintained protocol, guideline, orderset or other definition that is adhered to in whole or in part by this Communication. Comments This might be an HTML page, PDF, etc. or could just be a non-resolvable URI identifier. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Event.instantiatesUri rim: .outboundRelationship[typeCode=DEFN].target
basedOn	Σ I	0..0	Reference(Resource)	There are no (further) constraints on this element Element id Communication.basedOn Short description Request fulfilled by this communication Alternate names fulfills Definition An order, proposal or plan fulfilled in whole or in part by this Communication. Comments This must point to some sort of a 'Request' resource, such as CarePlan, CommunicationRequest, ServiceRequest, MedicationRequest, etc. Data type Reference(Resource) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.basedOn
partOf	Σ I	0..0	Reference(Resource)	There are no (further) constraints on this element Element id Communication.partOf Short description Part of referenced event (e.g. Communication, Procedure) Alternate names container Definition A larger event (e.g. Communication, Procedure) of which this particular communication is a component or step. Comments The event the communication was part of - e.g. if you disclosed as "part" of counselling, it would be partOf that Procedure. Data type Reference(Resource) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.partOf
inResponseTo	I	0..0	Reference(Communication)	There are no (further) constraints on this element Element id Communication.inResponseTo Short description Reply to Definition Prior communication that this communication is in response to. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository. Data type Reference(Communication) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
status	Σ ?!	1..1	codeBinding	There are no (further) constraints on this element Element id Communication.status Short description preparation \| in-progress \| not-done \| on-hold \| stopped \| completed \| entered-in-error \| unknown Definition The status of the transmission. Comments This element is labeled as a modifier because the status contains the codes aborted and entered-in-error that mark the communication as not currently valid. Data type code Binding The status of the communication. EventStatus (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Event.status w5: FiveWs.status
statusReason	Σ	0..0	CodeableConcept	There are no (further) constraints on this element Element id Communication.statusReason Short description Reason for current status Alternate names Suspended Reason, Cancelled Reason Definition Captures the reason for the current state of the Communication. Comments This is generally only used for "exception" statuses such as "not-done", "suspended" or "aborted". The reason for performing the event at all is captured in reasonCode, not here. Data type CodeableConcept Binding Codes for the reason why a communication did not happen. CommunicationNotDoneReason (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD workflow: Event.statusReason
category		1..1	CodeableConcept	There are no (further) constraints on this element Element id Communication.category Short description Message category Definition The type of message conveyed such as alert, notification, reminder, instruction, etc. Comments There may be multiple axes of categorization and one communication may serve multiple purposes. Data type CodeableConcept Binding Codes for general categories of communications such as alerts, instructions, etc. CommunicationCategory (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD w5: FiveWs.class
id		0..1	string	There are no (further) constraints on this element Element id Communication.category.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Communication.category.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
coding	Σ I	1..1	Coding	There are no (further) constraints on this element Element id Communication.category.coding Short description Code defined by a terminology system Definition A reference to a code defined by a terminology system. Requirements Allows for alternative encodings within a code system, and translations to other code systems. Comments Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true. Data type Coding Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()` Mappings rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..1	string	There are no (further) constraints on this element Element id Communication.category.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Communication.category.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
system	Σ	1..1	uriFixed Value	Element id Communication.category.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value http://terminology.hl7.org/CodeSystem/communication-category Mappings rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..0	string	There are no (further) constraints on this element Element id Communication.category.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ I	1..1	codeFixed Value	Element id Communication.category.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value alert Mappings rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ I	0..0	string	There are no (further) constraints on this element Element id Communication.category.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..0	boolean	There are no (further) constraints on this element Element id Communication.category.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..0	string	There are no (further) constraints on this element Element id Communication.category.text Short description Plain text representation of the concept Definition A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user. Requirements The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source. Comments Very often the text is the same as a displayName of one of the codings. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
priority	Σ	0..0	codeBinding	There are no (further) constraints on this element Element id Communication.priority Short description routine \| urgent \| asap \| stat Definition Characterizes how quickly the planned or in progress communication must be addressed. Includes concepts such as stat, urgent, routine. Comments Used to prioritize workflow (such as which communication to read first) when the communication is planned or in progress. Meaning when missing If missing, this communication should be treated with normal priority Data type code Binding Codes indicating the relative importance of a communication. RequestPriority (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a w5: FiveWs.grade
medium		0..0	CodeableConcept	There are no (further) constraints on this element Element id Communication.medium Short description A channel of communication Definition A channel that was used for this communication (e.g. email, fax). Comments Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination. Data type CodeableConcept Binding Codes for communication mediums such as phone, fax, email, in person, etc. http://terminology.hl7.org/ValueSet/v3-ParticipationMode (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
subject	Σ I	1..1	Reference(http://fhir.synapxe.sg/StructureDefinition/profile-patient)	Element id Communication.subject Short description Focus of message Alternate names patient Definition The patient or group that was the focus of this communication. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository. Data type Reference(http://fhir.synapxe.sg/StructureDefinition/profile-patient) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.subject w5: FiveWs.subject[x]
id		0..1	string	There are no (further) constraints on this element Element id Communication.subject.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Communication.subject.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
reference	Σ I	1..1	string	There are no (further) constraints on this element Element id Communication.subject.reference Short description Literal reference, Relative, internal or absolute URL Definition A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources. Comments Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
type	Σ	0..0	uriBinding	There are no (further) constraints on this element Element id Communication.subject.type Short description Type the reference refers to (e.g. "Patient") - must be a resource in resources Definition The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources). Comments This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference. Data type uri Binding Aa resource (or, for logical models, the URI of the logical model). ResourceType (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
identifier	Σ I	0..0	Identifier	There are no (further) constraints on this element Element id Communication.subject.identifier Short description Logical reference, when literal reference is not known Definition An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference. Comments When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation\|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any). This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()` Mappings rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier rim: .identifier
display	Σ I	0..0	string	There are no (further) constraints on this element Element id Communication.subject.display Short description Text alternative for the resource Definition Plain text narrative that identifies the resource in addition to the resource reference. Comments This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
topic		0..0	CodeableConcept	There are no (further) constraints on this element Element id Communication.topic Short description Description of the purpose/content Definition Description of the purpose/content, similar to a subject line in an email. Comments Communication.topic.text can be used without any codings. Data type CodeableConcept Binding Codes describing the purpose or content of the communication. CommunicationTopic (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD w5: FiveWs.context
about	I	0..1	Reference(http://fhir.synapxe.sg/StructureDefinition/profile-observation)	Element id Communication.about Short description Resources that pertain to this communication Definition Other resources that pertain to this communication and to which this communication should be associated. Comments Don't use Communication.about element when a more specific element exists, such as basedOn or reasonReference. Data type Reference(http://fhir.synapxe.sg/StructureDefinition/profile-observation) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) w5: FiveWs.context
id		0..1	string	There are no (further) constraints on this element Element id Communication.about.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Communication.about.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
reference	Σ I	1..1	string	There are no (further) constraints on this element Element id Communication.about.reference Short description Literal reference, Relative, internal or absolute URL Definition A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources. Comments Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
type	Σ	0..0	uriBinding	There are no (further) constraints on this element Element id Communication.about.type Short description Type the reference refers to (e.g. "Patient") - must be a resource in resources Definition The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources). Comments This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference. Data type uri Binding Aa resource (or, for logical models, the URI of the logical model). ResourceType (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
identifier	Σ I	0..0	Identifier	There are no (further) constraints on this element Element id Communication.about.identifier Short description Logical reference, when literal reference is not known Definition An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference. Comments When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation\|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any). This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()` Mappings rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier rim: .identifier
display	Σ I	0..0	string	There are no (further) constraints on this element Element id Communication.about.display Short description Text alternative for the resource Definition Plain text narrative that identifies the resource in addition to the resource reference. Comments This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
encounter	Σ I	0..0	Reference(Encounter)	There are no (further) constraints on this element Element id Communication.encounter Short description The Encounter during which this Communication was created Definition The Encounter during which this Communication was created or to which the creation of this record is tightly associated. Comments This will typically be the encounter the event occurred within, but some activities may be initiated prior to or after the official completion of an encounter but still be tied to the context of the encounter. Data type Reference(Encounter) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.encounter w5: FiveWs.context
sent		1..1	dateTime	There are no (further) constraints on this element Element id Communication.sent Short description When sent Definition The time when this communication was sent. Comments UTC offset is allowed for dates and partial dates Data type dateTime Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Event.occurrence[x] {Invariant: maps to period.start} w5: FiveWs.done[x]
received		0..0	dateTime	There are no (further) constraints on this element Element id Communication.received Short description When received Definition The time when this communication arrived at the destination. Comments UTC offset is allowed for dates and partial dates Data type dateTime Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Event.occurrence[x] {Invariant: maps to period.end} w5: FiveWs.done[x]
recipient	I	0..0	Reference(CareTeam \| Device \| Group \| HealthcareService \| Location \| Organization \| Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Endpoint)	There are no (further) constraints on this element Element id Communication.recipient Short description Who the information is shared with Definition The entity (e.g. person, organization, clinical information system, care team or device) which is the target of the communication. Comments If receipts need to be tracked by an individual, a separate resource instance will need to be created for each recipient. Multiple recipient communications are intended where either receipts are not tracked (e.g. a mass mail-out) or a receipt is captured in aggregate (all emails confirmed received by a particular time). Data type Reference(CareTeam \| Device \| Group \| HealthcareService \| Location \| Organization \| Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Endpoint) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.performer.actor w5: FiveWs.actor
sender	I	0..0	Reference(Device \| Organization \| Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| HealthcareService \| Endpoint \| CareTeam)	There are no (further) constraints on this element Element id Communication.sender Short description Who shares the information Definition The entity (e.g. person, organization, clinical information system, or device) which is the source of the communication. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository. Data type Reference(Device \| Organization \| Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| HealthcareService \| Endpoint \| CareTeam) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.performer.actor w5: FiveWs.actor
reason	Σ	1..1	CodeableReference(Resource)	There are no (further) constraints on this element Element id Communication.reason Short description Indication for message Definition The reason or justification for the communication. Comments Textual reasons can be captured using reason.concept.text. Data type CodeableReference(Resource) Binding Codes for describing reasons for the occurrence of a communication. SNOMEDCTClinicalFindings (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Event.reason w5: FiveWs.why[x] rim: .reasonCode
id		0..1	string	There are no (further) constraints on this element Element id Communication.reason.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Communication.reason.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
concept	Σ	1..1	CodeableConceptBinding	Element id Communication.reason.concept Short description Reference to a concept (by class) Definition A reference to a concept - e.g. the information is identified by its general class to the degree of precision found in the terminology. Comments Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination. Data type CodeableConcept Binding The communication alert codes used in RCM. http://fhir.synapxe.sg/ValueSet/rcm-communication-alert-codes (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD rim: N/A
id		0..1	string	There are no (further) constraints on this element Element id Communication.reason.concept.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Communication.reason.concept.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
coding	Σ I	1..1	Coding	There are no (further) constraints on this element Element id Communication.reason.concept.coding Short description Code defined by a terminology system Definition A reference to a code defined by a terminology system. Requirements Allows for alternative encodings within a code system, and translations to other code systems. Comments Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true. Data type Coding Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()` Mappings rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..1	string	There are no (further) constraints on this element Element id Communication.reason.concept.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Communication.reason.concept.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
system	Σ	1..1	uriFixed Value	Element id Communication.reason.concept.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value http://fhir.synapxe.sg/CodeSystem/rcm-communication-alert-codes Mappings rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..0	string	There are no (further) constraints on this element Element id Communication.reason.concept.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ I	1..1	code	There are no (further) constraints on this element Element id Communication.reason.concept.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ I	0..0	string	There are no (further) constraints on this element Element id Communication.reason.concept.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..0	boolean	There are no (further) constraints on this element Element id Communication.reason.concept.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..0	string	There are no (further) constraints on this element Element id Communication.reason.concept.text Short description Plain text representation of the concept Definition A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user. Requirements The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source. Comments Very often the text is the same as a displayName of one of the codings. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
reference	Σ I	0..0	Reference()	There are no (further) constraints on this element Element id Communication.reason.reference Short description Reference to a resource (by instance) Definition A reference to a resource the provides exact details about the information being referenced. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository. Data type Reference() Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) rim: N/A
payload		0..0	BackboneElement	There are no (further) constraints on this element Element id Communication.payload Short description Message payload Definition Text, attachment(s), or resource(s) that was communicated to the recipient. Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
note		0..0	Annotation	There are no (further) constraints on this element Element id Communication.note Short description Comments made about the communication Definition Additional notes or commentary about the communication by the sender, receiver or other interested parties. Comments For systems that do not have structured annotations, they can simply communicate a single annotation with no author or time. This element may need to be included in narrative because of the potential for modifying information. Annotations SHOULD NOT be used to communicate "modifying" information that could be computable. (This is a SHOULD because enforcing user behavior is nearly impossible). Data type Annotation Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: N/A rim: Act workflow: Event.note

Communication
Definition	A clinical or business level record of information being transmitted or shared; e.g. an alert that was sent to a responsible provider, a public health agency communication to a provider/reporter in response to a case report for a reportable condition.
Cardinality	0...*
Invariants	dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources `contained.contained.empty()` dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()` dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource `contained.where((('#'+id in (%resource.descendants().reference \| %resource.descendants().ofType(canonical) \| %resource.descendants().ofType(uri) \| %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()` dom-6: A resource should have narrative for robust management text.`div`.exists() dom-5: If a resource is contained in another resource, it SHALL NOT have a security label `contained.meta.security.empty()`
Mappings	rim: n/a rim: Entity. Role, or Act rim: Entity, Role, or Act workflow: Event w5: workflow.encounter
Communication.id
Definition	The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.
Cardinality	0...1
Type	id
Summary	True
Comments	Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case.
Communication.meta
Definition	The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.
Cardinality	0...1
Type	Meta
Summary	True
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Communication.implicitRules
Definition	A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.
Cardinality	0...1
Type	uri
Modifier	True
Summary	True
Comments	Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of its narrative along with other profiles, value sets, etc.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Communication.language
Definition	The base language in which the resource is written.
Cardinality	0...1
Type	code
Binding	IETF language tag for a human language AllLanguages (required)
Comments	Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Communication.text
Definition	A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.
Cardinality	0...1
Type	Narrative
Alias	narrative, html, xhtml, display
Comments	Contained resources do not have a narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A rim: Act.text?
Communication.contained
Definition	These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning.
Cardinality	0...*
Type	Resource
Alias	inline resources, anonymous resources, contained resources
Comments	This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags in their meta elements, but SHALL NOT have security labels.
Mappings	rim: n/a rim: Entity. Role, or Act rim: N/A
Communication.extension
Definition	May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.identifier
Definition	Business identifiers assigned to this communication by the performer or other systems which remain constant as the resource is updated and propagates from server to server.
Cardinality	0...0
Type	Identifier
Summary	True
Requirements	Allows identification of the communication as it is known by various participating systems and in a way that remains consistent across servers.
Comments	This is a business identifier, not a resource identifier (see discussion). It is best practice for the identifier to only appear on a single resource instance, however business practices may occasionally dictate that multiple resource instances with the same identifier can exist - possibly even with different resource types. For example, multiple Patient and a Person resource instance might share the same social insurance number.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()`
Mappings	rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier workflow: Event.identifier w5: FiveWs.identifier
Communication.instantiatesCanonical
Definition	The URL pointing to a FHIR-defined protocol, guideline, orderset or other definition that is adhered to in whole or in part by this Communication.
Cardinality	0...0
Type	canonical(PlanDefinition \| ActivityDefinition \| Measure \| OperationDefinition \| Questionnaire)
Summary	True
Comments	see Canonical References
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a workflow: Event.instantiatesCanonical rim: .outboundRelationship[typeCode=DEFN].target
Communication.instantiatesUri
Definition	The URL pointing to an externally maintained protocol, guideline, orderset or other definition that is adhered to in whole or in part by this Communication.
Cardinality	0...0
Type	uri
Summary	True
Comments	This might be an HTML page, PDF, etc. or could just be a non-resolvable URI identifier.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a workflow: Event.instantiatesUri rim: .outboundRelationship[typeCode=DEFN].target
Communication.basedOn
Definition	An order, proposal or plan fulfilled in whole or in part by this Communication.
Cardinality	0...0
Type	Reference(Resource)
Summary	True
Alias	fulfills
Comments	This must point to some sort of a 'Request' resource, such as CarePlan, CommunicationRequest, ServiceRequest, MedicationRequest, etc.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.basedOn
Communication.partOf
Definition	A larger event (e.g. Communication, Procedure) of which this particular communication is a component or step.
Cardinality	0...0
Type	Reference(Resource)
Summary	True
Alias	container
Comments	The event the communication was part of - e.g. if you disclosed as "part" of counselling, it would be partOf that Procedure.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.partOf
Communication.inResponseTo
Definition	Prior communication that this communication is in response to.
Cardinality	0...0
Type	Reference(Communication)
Comments	References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity)
Communication.status
Definition	The status of the transmission.
Cardinality	1...1
Type	code
Binding	The status of the communication. EventStatus (required)
Modifier	True
Summary	True
Comments	This element is labeled as a modifier because the status contains the codes aborted and entered-in-error that mark the communication as not currently valid.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a workflow: Event.status w5: FiveWs.status
Communication.statusReason
Definition	Captures the reason for the current state of the Communication.
Cardinality	0...0
Type	CodeableConcept
Binding	Codes for the reason why a communication did not happen. CommunicationNotDoneReason (example)
Summary	True
Alias	Suspended Reason, Cancelled Reason
Comments	This is generally only used for "exception" statuses such as "not-done", "suspended" or "aborted". The reason for performing the event at all is captured in reasonCode, not here.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD workflow: Event.statusReason
Communication.category
Definition	The type of message conveyed such as alert, notification, reminder, instruction, etc.
Cardinality	1...1
Type	CodeableConcept
Binding	Codes for general categories of communications such as alerts, instructions, etc. CommunicationCategory (example)
Comments	There may be multiple axes of categorization and one communication may serve multiple purposes.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD w5: FiveWs.class
Communication.category.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Communication.category.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.category.coding
Definition	A reference to a code defined by a terminology system.
Cardinality	1...1
Type	Coding
Summary	True
Requirements	Allows for alternative encodings within a code system, and translations to other code systems.
Comments	Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()`
Mappings	rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
Communication.category.coding.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Communication.category.coding.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.category.coding.system
Definition	The identification of the code system that defines the meaning of the symbol in the code.
Cardinality	1...1
Type	uri
Summary	True
Requirements	Need to be unambiguous about the source of the definition of the symbol.
Comments	The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	http://terminology.hl7.org/CodeSystem/communication-category
Mappings	rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
Communication.category.coding.version
Definition	The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.
Cardinality	0...0
Type	string
Summary	True
Comments	Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
Communication.category.coding.code
Definition	A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).
Cardinality	1...1
Type	code
Summary	True
Requirements	Need to refer to a particular code in the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	alert
Mappings	rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
Communication.category.coding.display
Definition	A representation of the meaning of the code in the system, following the rules of the system.
Cardinality	0...0
Type	string
Summary	True
Requirements	Need to be able to carry a human-readable meaning of the code for readers that do not know the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
Communication.category.coding.userSelected
Definition	Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).
Cardinality	0...0
Type	boolean
Summary	True
Requirements	This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.
Comments	Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
Communication.category.text
Definition	A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.
Cardinality	0...0
Type	string
Summary	True
Requirements	The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.
Comments	Very often the text is the same as a displayName of one of the codings.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
Communication.priority
Definition	Characterizes how quickly the planned or in progress communication must be addressed. Includes concepts such as stat, urgent, routine.
Cardinality	0...0
Type	code
Binding	Codes indicating the relative importance of a communication. RequestPriority (required)
Summary	True
Comments	Used to prioritize workflow (such as which communication to read first) when the communication is planned or in progress.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a w5: FiveWs.grade
Communication.medium
Definition	A channel that was used for this communication (e.g. email, fax).
Cardinality	0...0
Type	CodeableConcept
Binding	Codes for communication mediums such as phone, fax, email, in person, etc. http://terminology.hl7.org/ValueSet/v3-ParticipationMode (example)
Comments	Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD
Communication.subject
Definition	The patient or group that was the focus of this communication.
Cardinality	1...1
Type	Reference(http://fhir.synapxe.sg/StructureDefinition/profile-patient)
Summary	True
Alias	patient
Comments	References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.subject w5: FiveWs.subject[x]
Communication.subject.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Communication.subject.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.subject.reference
Definition	A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.
Cardinality	1...1
Type	string
Summary	True
Comments	Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Communication.subject.type
Definition	The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).
Cardinality	0...0
Type	uri
Binding	Aa resource (or, for logical models, the URI of the logical model). ResourceType (extensible)
Summary	True
Comments	This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Communication.subject.identifier
Definition	An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.
Cardinality	0...0
Type	Identifier
Summary	True
Comments	When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation\|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any). This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()`
Mappings	rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier rim: .identifier
Communication.subject.display
Definition	Plain text narrative that identifies the resource in addition to the resource reference.
Cardinality	0...0
Type	string
Summary	True
Comments	This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Communication.topic
Definition	Description of the purpose/content, similar to a subject line in an email.
Cardinality	0...0
Type	CodeableConcept
Binding	Codes describing the purpose or content of the communication. CommunicationTopic (example)
Comments	Communication.topic.text can be used without any codings.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD w5: FiveWs.context
Communication.about
Definition	Other resources that pertain to this communication and to which this communication should be associated.
Cardinality	0...1
Type	Reference(http://fhir.synapxe.sg/StructureDefinition/profile-observation)
Comments	Don't use Communication.about element when a more specific element exists, such as basedOn or reasonReference.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) w5: FiveWs.context
Communication.about.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Communication.about.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.about.reference
Definition	A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.
Cardinality	1...1
Type	string
Summary	True
Comments	Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Communication.about.type
Definition	The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).
Cardinality	0...0
Type	uri
Binding	Aa resource (or, for logical models, the URI of the logical model). ResourceType (extensible)
Summary	True
Comments	This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Communication.about.identifier
Definition	An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.
Cardinality	0...0
Type	Identifier
Summary	True
Comments	When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation\|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any). This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()`
Mappings	rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier rim: .identifier
Communication.about.display
Definition	Plain text narrative that identifies the resource in addition to the resource reference.
Cardinality	0...0
Type	string
Summary	True
Comments	This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Communication.encounter
Definition	The Encounter during which this Communication was created or to which the creation of this record is tightly associated.
Cardinality	0...0
Type	Reference(Encounter)
Summary	True
Comments	This will typically be the encounter the event occurred within, but some activities may be initiated prior to or after the official completion of an encounter but still be tied to the context of the encounter.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.encounter w5: FiveWs.context
Communication.sent
Definition	The time when this communication was sent.
Cardinality	1...1
Type	dateTime
Comments	UTC offset is allowed for dates and partial dates
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a workflow: Event.occurrence[x] {Invariant: maps to period.start} w5: FiveWs.done[x]
Communication.received
Definition	The time when this communication arrived at the destination.
Cardinality	0...0
Type	dateTime
Comments	UTC offset is allowed for dates and partial dates
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a workflow: Event.occurrence[x] {Invariant: maps to period.end} w5: FiveWs.done[x]
Communication.recipient
Definition	The entity (e.g. person, organization, clinical information system, care team or device) which is the target of the communication.
Cardinality	0...0
Type	Reference(CareTeam \| Device \| Group \| HealthcareService \| Location \| Organization \| Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Endpoint)
Comments	If receipts need to be tracked by an individual, a separate resource instance will need to be created for each recipient. Multiple recipient communications are intended where either receipts are not tracked (e.g. a mass mail-out) or a receipt is captured in aggregate (all emails confirmed received by a particular time).
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.performer.actor w5: FiveWs.actor
Communication.sender
Definition	The entity (e.g. person, organization, clinical information system, or device) which is the source of the communication.
Cardinality	0...0
Type	Reference(Device \| Organization \| Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| HealthcareService \| Endpoint \| CareTeam)
Comments	References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.performer.actor w5: FiveWs.actor
Communication.reason
Definition	The reason or justification for the communication.
Cardinality	1...1
Type	CodeableReference(Resource)
Binding	Codes for describing reasons for the occurrence of a communication. SNOMEDCTClinicalFindings (example)
Summary	True
Comments	Textual reasons can be captured using reason.concept.text.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a workflow: Event.reason w5: FiveWs.why[x] rim: .reasonCode
Communication.reason.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Communication.reason.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.reason.concept
Definition	A reference to a concept - e.g. the information is identified by its general class to the degree of precision found in the terminology.
Cardinality	1...1
Type	CodeableConcept
Binding	The communication alert codes used in RCM. http://fhir.synapxe.sg/ValueSet/rcm-communication-alert-codes (required)
Summary	True
Comments	Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD rim: N/A
Communication.reason.concept.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Communication.reason.concept.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.reason.concept.coding
Definition	A reference to a code defined by a terminology system.
Cardinality	1...1
Type	Coding
Summary	True
Requirements	Allows for alternative encodings within a code system, and translations to other code systems.
Comments	Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()`
Mappings	rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
Communication.reason.concept.coding.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Communication.reason.concept.coding.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.reason.concept.coding.system
Definition	The identification of the code system that defines the meaning of the symbol in the code.
Cardinality	1...1
Type	uri
Summary	True
Requirements	Need to be unambiguous about the source of the definition of the symbol.
Comments	The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	http://fhir.synapxe.sg/CodeSystem/rcm-communication-alert-codes
Mappings	rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
Communication.reason.concept.coding.version
Definition	The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.
Cardinality	0...0
Type	string
Summary	True
Comments	Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
Communication.reason.concept.coding.code
Definition	A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).
Cardinality	1...1
Type	code
Summary	True
Requirements	Need to refer to a particular code in the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
Communication.reason.concept.coding.display
Definition	A representation of the meaning of the code in the system, following the rules of the system.
Cardinality	0...0
Type	string
Summary	True
Requirements	Need to be able to carry a human-readable meaning of the code for readers that do not know the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
Communication.reason.concept.coding.userSelected
Definition	Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).
Cardinality	0...0
Type	boolean
Summary	True
Requirements	This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.
Comments	Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
Communication.reason.concept.text
Definition	A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.
Cardinality	0...0
Type	string
Summary	True
Requirements	The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.
Comments	Very often the text is the same as a displayName of one of the codings.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
Communication.reason.reference
Definition	A reference to a resource the provides exact details about the information being referenced.
Cardinality	0...0
Type	Reference()
Summary	True
Comments	References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) rim: N/A
Communication.payload
Definition	Text, attachment(s), or resource(s) that was communicated to the recipient.
Cardinality	0...0
Type	BackboneElement
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Communication.payload.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Communication.payload.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.payload.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content, modifiers
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Communication.payload.content[x]
Definition	A communicated content (or for multi-part communications, one portion of the communication).
Cardinality	1...1
Type	Attachment
Comments	The content can be codified or textual. As an example of codified content, when working with machine generated communications, the payload may be drawn from a finite, terminology defined set of communications, especially for short, status update kinds of communications where more of a natural language approach isn't appropriate. If the content isn't codified, contentCodeableConcept.text can be used. When using contentCodeableConcept, the CodeableConcept is what is being communicated and is not a categorization of the content.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Communication.note
Definition	Additional notes or commentary about the communication by the sender, receiver or other interested parties.
Cardinality	0...0
Type	Annotation
Comments	For systems that do not have structured annotations, they can simply communicate a single annotation with no author or time. This element may need to be included in narrative because of the potential for modifying information. Annotations SHOULD NOT be used to communicate "modifying" information that could be computable. (This is a SHOULD because enforcing user behavior is nearly impossible).
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: N/A rim: Act workflow: Event.note

<StructureDefinition xmlns="http://hl7.org/fhir">
    <url value="http://fhir.synapxe.sg/StructureDefinition/profile-communication" />
    <name value="Communication" />
    <status value="draft" />
    <description value="This resource defines the communication alert for the remote clinical monitoring of the patient. Details like the type of alert and the patient id will be used. The observation id will also be stored depending on the alert code (i.e &quot;Threshold&quot; and &quot;Missed Read&quot;)." />
    <fhirVersion value="5.0.0" />
    <kind value="resource" />
    <abstract value="false" />
    <type value="Communication" />
    <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Communication" />
    <derivation value="constraint" />
    <differential>
        <element id="Communication.identifier">
            <path value="Communication.identifier" />
            <max value="0" />
        </element>
        <element id="Communication.instantiatesCanonical">
            <path value="Communication.instantiatesCanonical" />
            <max value="0" />
        </element>
        <element id="Communication.instantiatesUri">
            <path value="Communication.instantiatesUri" />
            <max value="0" />
        </element>
        <element id="Communication.basedOn">
            <path value="Communication.basedOn" />
            <max value="0" />
        </element>
        <element id="Communication.partOf">
            <path value="Communication.partOf" />
            <max value="0" />
        </element>
        <element id="Communication.inResponseTo">
            <path value="Communication.inResponseTo" />
            <max value="0" />
        </element>
        <element id="Communication.statusReason">
            <path value="Communication.statusReason" />
            <max value="0" />
        </element>
        <element id="Communication.category">
            <path value="Communication.category" />
            <min value="1" />
            <max value="1" />
        </element>
        <element id="Communication.category.coding">
            <path value="Communication.category.coding" />
            <min value="1" />
            <max value="1" />
        </element>
        <element id="Communication.category.coding.system">
            <path value="Communication.category.coding.system" />
            <min value="1" />
            <fixedUri value="http://terminology.hl7.org/CodeSystem/communication-category" />
        </element>
        <element id="Communication.category.coding.version">
            <path value="Communication.category.coding.version" />
            <max value="0" />
        </element>
        <element id="Communication.category.coding.code">
            <path value="Communication.category.coding.code" />
            <min value="1" />
            <fixedCode value="alert" />
        </element>
        <element id="Communication.category.coding.display">
            <path value="Communication.category.coding.display" />
            <max value="0" />
        </element>
        <element id="Communication.category.coding.userSelected">
            <path value="Communication.category.coding.userSelected" />
            <max value="0" />
        </element>
        <element id="Communication.category.text">
            <path value="Communication.category.text" />
            <max value="0" />
        </element>
        <element id="Communication.priority">
            <path value="Communication.priority" />
            <max value="0" />
        </element>
        <element id="Communication.medium">
            <path value="Communication.medium" />
            <max value="0" />
        </element>
        <element id="Communication.subject">
            <path value="Communication.subject" />
            <min value="1" />
            <type>
                <code value="Reference" />
                <targetProfile value="http://fhir.synapxe.sg/StructureDefinition/profile-patient" />
            </type>
        </element>
        <element id="Communication.subject.reference">
            <path value="Communication.subject.reference" />
            <min value="1" />
        </element>
        <element id="Communication.subject.type">
            <path value="Communication.subject.type" />
            <max value="0" />
        </element>
        <element id="Communication.subject.identifier">
            <path value="Communication.subject.identifier" />
            <max value="0" />
        </element>
        <element id="Communication.subject.display">
            <path value="Communication.subject.display" />
            <max value="0" />
        </element>
        <element id="Communication.topic">
            <path value="Communication.topic" />
            <max value="0" />
        </element>
        <element id="Communication.about">
            <path value="Communication.about" />
            <max value="1" />
            <type>
                <code value="Reference" />
                <targetProfile value="http://fhir.synapxe.sg/StructureDefinition/profile-observation" />
            </type>
        </element>
        <element id="Communication.about.reference">
            <path value="Communication.about.reference" />
            <min value="1" />
        </element>
        <element id="Communication.about.type">
            <path value="Communication.about.type" />
            <max value="0" />
        </element>
        <element id="Communication.about.identifier">
            <path value="Communication.about.identifier" />
            <max value="0" />
        </element>
        <element id="Communication.about.display">
            <path value="Communication.about.display" />
            <max value="0" />
        </element>
        <element id="Communication.encounter">
            <path value="Communication.encounter" />
            <max value="0" />
        </element>
        <element id="Communication.sent">
            <path value="Communication.sent" />
            <min value="1" />
        </element>
        <element id="Communication.received">
            <path value="Communication.received" />
            <max value="0" />
        </element>
        <element id="Communication.recipient">
            <path value="Communication.recipient" />
            <max value="0" />
        </element>
        <element id="Communication.sender">
            <path value="Communication.sender" />
            <max value="0" />
        </element>
        <element id="Communication.reason">
            <path value="Communication.reason" />
            <min value="1" />
            <max value="1" />
        </element>
        <element id="Communication.reason.concept">
            <path value="Communication.reason.concept" />
            <min value="1" />
            <binding>
                <strength value="required" />
                <description value="The communication alert codes used in RCM." />
                <valueSet value="http://fhir.synapxe.sg/ValueSet/rcm-communication-alert-codes" />
            </binding>
        </element>
        <element id="Communication.reason.concept.coding">
            <path value="Communication.reason.concept.coding" />
            <min value="1" />
            <max value="1" />
        </element>
        <element id="Communication.reason.concept.coding.system">
            <path value="Communication.reason.concept.coding.system" />
            <min value="1" />
            <fixedUri value="http://fhir.synapxe.sg/CodeSystem/rcm-communication-alert-codes" />
        </element>
        <element id="Communication.reason.concept.coding.version">
            <path value="Communication.reason.concept.coding.version" />
            <max value="0" />
        </element>
        <element id="Communication.reason.concept.coding.code">
            <path value="Communication.reason.concept.coding.code" />
            <min value="1" />
        </element>
        <element id="Communication.reason.concept.coding.display">
            <path value="Communication.reason.concept.coding.display" />
            <max value="0" />
        </element>
        <element id="Communication.reason.concept.coding.userSelected">
            <path value="Communication.reason.concept.coding.userSelected" />
            <max value="0" />
        </element>
        <element id="Communication.reason.concept.text">
            <path value="Communication.reason.concept.text" />
            <max value="0" />
        </element>
        <element id="Communication.reason.reference">
            <path value="Communication.reason.reference" />
            <max value="0" />
        </element>
        <element id="Communication.payload">
            <path value="Communication.payload" />
            <max value="0" />
        </element>
        <element id="Communication.note">
            <path value="Communication.note" />
            <max value="0" />
        </element>
    </differential>
</StructureDefinition>

{
    "resourceType": "StructureDefinition",
    "url": "http://fhir.synapxe.sg/StructureDefinition/profile-communication",
    "name": "Communication",
    "status": "draft",
    "description": "This resource defines the communication alert for the remote clinical monitoring of the patient. Details like the type of alert and the patient id will be used. The observation id will also be stored depending on the alert code (i.e \"Threshold\" and \"Missed Read\").",
    "fhirVersion": "5.0.0",
    "kind": "resource",
    "abstract": false,
    "type": "Communication",
    "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Communication",
    "derivation": "constraint",
    "differential": {
        "element":  [
            {
                "id": "Communication.identifier",
                "path": "Communication.identifier",
                "max": "0"
            },
            {
                "id": "Communication.instantiatesCanonical",
                "path": "Communication.instantiatesCanonical",
                "max": "0"
            },
            {
                "id": "Communication.instantiatesUri",
                "path": "Communication.instantiatesUri",
                "max": "0"
            },
            {
                "id": "Communication.basedOn",
                "path": "Communication.basedOn",
                "max": "0"
            },
            {
                "id": "Communication.partOf",
                "path": "Communication.partOf",
                "max": "0"
            },
            {
                "id": "Communication.inResponseTo",
                "path": "Communication.inResponseTo",
                "max": "0"
            },
            {
                "id": "Communication.statusReason",
                "path": "Communication.statusReason",
                "max": "0"
            },
            {
                "id": "Communication.category",
                "path": "Communication.category",
                "min": 1,
                "max": "1"
            },
            {
                "id": "Communication.category.coding",
                "path": "Communication.category.coding",
                "min": 1,
                "max": "1"
            },
            {
                "id": "Communication.category.coding.system",
                "path": "Communication.category.coding.system",
                "min": 1,
                "fixedUri": "http://terminology.hl7.org/CodeSystem/communication-category"
            },
            {
                "id": "Communication.category.coding.version",
                "path": "Communication.category.coding.version",
                "max": "0"
            },
            {
                "id": "Communication.category.coding.code",
                "path": "Communication.category.coding.code",
                "min": 1,
                "fixedCode": "alert"
            },
            {
                "id": "Communication.category.coding.display",
                "path": "Communication.category.coding.display",
                "max": "0"
            },
            {
                "id": "Communication.category.coding.userSelected",
                "path": "Communication.category.coding.userSelected",
                "max": "0"
            },
            {
                "id": "Communication.category.text",
                "path": "Communication.category.text",
                "max": "0"
            },
            {
                "id": "Communication.priority",
                "path": "Communication.priority",
                "max": "0"
            },
            {
                "id": "Communication.medium",
                "path": "Communication.medium",
                "max": "0"
            },
            {
                "id": "Communication.subject",
                "path": "Communication.subject",
                "min": 1,
                "type":  [
                    {
                        "code": "Reference",
                        "targetProfile":  [
                            "http://fhir.synapxe.sg/StructureDefinition/profile-patient"
                        ]
                    }
                ]
            },
            {
                "id": "Communication.subject.reference",
                "path": "Communication.subject.reference",
                "min": 1
            },
            {
                "id": "Communication.subject.type",
                "path": "Communication.subject.type",
                "max": "0"
            },
            {
                "id": "Communication.subject.identifier",
                "path": "Communication.subject.identifier",
                "max": "0"
            },
            {
                "id": "Communication.subject.display",
                "path": "Communication.subject.display",
                "max": "0"
            },
            {
                "id": "Communication.topic",
                "path": "Communication.topic",
                "max": "0"
            },
            {
                "id": "Communication.about",
                "path": "Communication.about",
                "max": "1",
                "type":  [
                    {
                        "code": "Reference",
                        "targetProfile":  [
                            "http://fhir.synapxe.sg/StructureDefinition/profile-observation"
                        ]
                    }
                ]
            },
            {
                "id": "Communication.about.reference",
                "path": "Communication.about.reference",
                "min": 1
            },
            {
                "id": "Communication.about.type",
                "path": "Communication.about.type",
                "max": "0"
            },
            {
                "id": "Communication.about.identifier",
                "path": "Communication.about.identifier",
                "max": "0"
            },
            {
                "id": "Communication.about.display",
                "path": "Communication.about.display",
                "max": "0"
            },
            {
                "id": "Communication.encounter",
                "path": "Communication.encounter",
                "max": "0"
            },
            {
                "id": "Communication.sent",
                "path": "Communication.sent",
                "min": 1
            },
            {
                "id": "Communication.received",
                "path": "Communication.received",
                "max": "0"
            },
            {
                "id": "Communication.recipient",
                "path": "Communication.recipient",
                "max": "0"
            },
            {
                "id": "Communication.sender",
                "path": "Communication.sender",
                "max": "0"
            },
            {
                "id": "Communication.reason",
                "path": "Communication.reason",
                "min": 1,
                "max": "1"
            },
            {
                "id": "Communication.reason.concept",
                "path": "Communication.reason.concept",
                "min": 1,
                "binding": {
                    "strength": "required",
                    "description": "The communication alert codes used in RCM.",
                    "valueSet": "http://fhir.synapxe.sg/ValueSet/rcm-communication-alert-codes"
                }
            },
            {
                "id": "Communication.reason.concept.coding",
                "path": "Communication.reason.concept.coding",
                "min": 1,
                "max": "1"
            },
            {
                "id": "Communication.reason.concept.coding.system",
                "path": "Communication.reason.concept.coding.system",
                "min": 1,
                "fixedUri": "http://fhir.synapxe.sg/CodeSystem/rcm-communication-alert-codes"
            },
            {
                "id": "Communication.reason.concept.coding.version",
                "path": "Communication.reason.concept.coding.version",
                "max": "0"
            },
            {
                "id": "Communication.reason.concept.coding.code",
                "path": "Communication.reason.concept.coding.code",
                "min": 1
            },
            {
                "id": "Communication.reason.concept.coding.display",
                "path": "Communication.reason.concept.coding.display",
                "max": "0"
            },
            {
                "id": "Communication.reason.concept.coding.userSelected",
                "path": "Communication.reason.concept.coding.userSelected",
                "max": "0"
            },
            {
                "id": "Communication.reason.concept.text",
                "path": "Communication.reason.concept.text",
                "max": "0"
            },
            {
                "id": "Communication.reason.reference",
                "path": "Communication.reason.reference",
                "max": "0"
            },
            {
                "id": "Communication.payload",
                "path": "Communication.payload",
                "max": "0"
            },
            {
                "id": "Communication.note",
                "path": "Communication.note",
                "max": "0"
            }
        ]
    }
}

Communication

Observation

Observation	I		Observation	There are no (further) constraints on this element Element id Observation Short description Measurements and simple assertions Alternate names Vital Signs, Measurement, Results, Tests Definition Measurements and simple assertions made about a patient, device or other subject. Comments Used for simple observations such as device measurements, laboratory atomic results, vital signs, height, weight, smoking status, comments, etc. Other resources are used to provide context for observations such as laboratory reports, etc. Data type Observation Constraints dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources `contained.contained.empty()` dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()` dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource `contained.where((('#'+id in (%resource.descendants().reference \| %resource.descendants().ofType(canonical) \| %resource.descendants().ofType(uri) \| %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()` dom-6: A resource should have narrative for robust management text.`div`.exists() dom-5: If a resource is contained in another resource, it SHALL NOT have a security label `contained.meta.security.empty()` obs-7: If Observation.component.code is the same as Observation.code, then Observation.value SHALL NOT be present (the Observation.component.value[x] holds the value). `value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()` obs-8: bodyStructure SHALL only be present if Observation.bodySite is not present `bodySite.exists() implies bodyStructure.empty()` obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present `dataAbsentReason.empty() or value.empty()` Mappings rim: n/a rim: Entity. Role, or Act rim: Entity, Role, or Act workflow: Event w5: clinical.diagnostics sct-concept: < 363787002 \|Observable entity\| v2: OBX rim: Observation[classCode=OBS, moodCode=EVN]
id	Σ	0..1	id	There are no (further) constraints on this element Element id Observation.id Short description Logical id of this artifact Definition The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes. Comments Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case. Data type id
meta	Σ	0..1	Meta	There are no (further) constraints on this element Element id Observation.meta Short description Metadata about the resource Definition The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource. Data type Meta Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
implicitRules	Σ ?!	0..1	uri	There are no (further) constraints on this element Element id Observation.implicitRules Short description A set of rules under which this content was created Definition A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc. Comments Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of its narrative along with other profiles, value sets, etc. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
language		0..1	codeBinding	There are no (further) constraints on this element Element id Observation.language Short description Language of the resource content Definition The base language in which the resource is written. Comments Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute). Data type code Binding IETF language tag for a human language AllLanguages (required) Additional bindings: CommonLanguages (starter) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
text	I	0..1	Narrative	There are no (further) constraints on this element Element id Observation.text Short description Text summary of the resource, for human interpretation Alternate names narrative, html, xhtml, display Definition A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety. Comments Contained resources do not have a narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later. Data type Narrative Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A rim: Act.text?
contained	I	0..*	Resource	There are no (further) constraints on this element Element id Observation.contained Short description Contained, inline Resources Alternate names inline resources, anonymous resources, contained resources Definition These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning. Comments This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags in their meta elements, but SHALL NOT have security labels. Data type Resource Mappings rim: n/a rim: Entity. Role, or Act rim: N/A
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
modifierExtension	Σ ?! I	0..*	Extension	There are no (further) constraints on this element Element id Observation.modifierExtension Short description Extensions that cannot be ignored Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Requirements Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
identifier	Σ I	0..0	Identifier	There are no (further) constraints on this element Element id Observation.identifier Short description Business Identifier for observation Definition A unique identifier assigned to this observation. Requirements Allows observations to be distinguished and referenced. Comments The rules of the identifier.type determine if a check digit is part of the ID value or sent separately, such as through the checkDigit extension. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()` Mappings rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier workflow: Event.identifier w5: FiveWs.identifier v2: OBX-21 For OBX segments from systems without OBX-21 support a combination of ORC/OBR and OBX must be negotiated between trading partners to uniquely identify the OBX segment. Depending on how V2 has been implemented each of these may be an option: 1) OBR-3 + OBX-3 + OBX-4 or 2) OBR-3 + OBR-4 + OBX-3 + OBX-4 or 3) some other way to uniquely ID the OBR/ORC + OBX-3 + OBX-4. rim: id
instantiates[x]	Σ	0..0		There are no (further) constraints on this element Element id Observation.instantiates[x] Short description Instantiates FHIR ObservationDefinition Definition The reference to a FHIR ObservationDefinition resource that provides the definition that is adhered to in whole or in part by this Observation instance. Comments ObservationDefinition can be referenced by its canonical url using instantiatesCanonical, or by a name or an identifier using the appropriate sub-elements of instantiatesReference. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Event.instantiatesCanonical rim: .outboundRelationship[typeCode=DEFN].target
basedOn	Σ I	0..0	Reference(CarePlan \| DeviceRequest \| ImmunizationRecommendation \| MedicationRequest \| NutritionOrder \| ServiceRequest)	There are no (further) constraints on this element Element id Observation.basedOn Short description Fulfills plan, proposal or order Alternate names Fulfills Definition A plan, proposal or order that is fulfilled in whole or in part by this event. For example, a MedicationRequest may require a patient to have laboratory test performed before it is dispensed. Requirements Allows tracing of authorization for the event and tracking whether proposals/recommendations were acted upon. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository. Data type Reference(CarePlan \| DeviceRequest \| ImmunizationRecommendation \| MedicationRequest \| NutritionOrder \| ServiceRequest) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.basedOn v2: ORC rim: .inboundRelationship[typeCode=COMP].source[moodCode=EVN]
triggeredBy		0..0	BackboneElement	There are no (further) constraints on this element Element id Observation.triggeredBy Short description Triggering observation(s) Definition Identifies the observation(s) that triggered the performance of this observation. Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: ORC rim: .inboundRelationship[typeCode=COMP].source[moodCode=EVN]
partOf	Σ I	0..0	Reference(MedicationAdministration \| MedicationDispense \| MedicationStatement \| Procedure \| Immunization \| ImagingStudy \| GenomicStudy)	There are no (further) constraints on this element Element id Observation.partOf Short description Part of referenced event Alternate names Container Definition A larger event of which this particular Observation is a component or step. For example, an observation as part of a procedure. Comments To link an Observation to an Encounter use `encounter`. See the Notes below for guidance on referencing another Observation. Data type Reference(MedicationAdministration \| MedicationDispense \| MedicationStatement \| Procedure \| Immunization \| ImagingStudy \| GenomicStudy) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.partOf v2: Varies by domain rim: .outboundRelationship[typeCode=FLFS].target
status	Σ ?!	1..1	codeBindingFixed Value	Element id Observation.status Short description final Definition The status of the result value. Requirements Need to track the status of individual results. Some results are finalized before the whole report is finalized. Comments This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid. Data type code Binding Codes providing the status of an observation. ObservationStatus (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value final Mappings rim: n/a workflow: Event.status w5: FiveWs.status sct-concept: < 445584004 \|Report by finality status\| v2: OBX-11 rim: status Amended & Final are differentiated by whether it is the subject of a ControlAct event with a type of "revise"
category		1..1	CodeableConceptBinding	There are no (further) constraints on this element Element id Observation.category Short description Classification of type of observation Definition A code that classifies the general type of observation being made. Requirements Used for filtering what observations are retrieved and displayed. Comments In addition to the required category valueset, this element allows various categorization schemes based on the owner’s definition of the category and effectively multiple categories can be used at once. The level of granularity is defined by the category concepts in the value set. Data type CodeableConcept Binding Codes for high level observation categories. ObservationCategoryCodes (preferred) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD w5: FiveWs.class rim: .outboundRelationship[typeCode="COMP].target[classCode="LIST", moodCode="EVN"].code
id		0..1	string	There are no (further) constraints on this element Element id Observation.category.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.category.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
coding	Σ I	1..1	Coding	There are no (further) constraints on this element Element id Observation.category.coding Short description Code defined by a terminology system Definition A reference to a code defined by a terminology system. Requirements Allows for alternative encodings within a code system, and translations to other code systems. Comments Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true. Data type Coding Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()` Mappings rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..1	string	There are no (further) constraints on this element Element id Observation.category.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.category.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
system	Σ	1..1	uriFixed Value	Element id Observation.category.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value http://terminology.hl7.org/CodeSystem/observation-category Mappings rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..0	string	There are no (further) constraints on this element Element id Observation.category.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ I	1..1	codeFixed Value	Element id Observation.category.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value vital-signs Mappings rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ I	1..1	stringFixed Value	Element id Observation.category.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value Vital Signs Mappings rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..0	boolean	There are no (further) constraints on this element Element id Observation.category.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..0	string	There are no (further) constraints on this element Element id Observation.category.text Short description Plain text representation of the concept Definition A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user. Requirements The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source. Comments Very often the text is the same as a displayName of one of the codings. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
code	Σ I	1..1	CodeableConcept	There are no (further) constraints on this element Element id Observation.code Short description Type of observation (code / type) Alternate names Name Definition Describes what was observed. Sometimes this is called the observation "name". Requirements Knowing what kind of observation is being made is essential to understanding the observation. Comments All code-value and, if present, component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation. Data type CodeableConcept Binding Codes identifying names of simple observations. LOINCCodes (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD workflow: Event.code w5: FiveWs.what[x] sct-concept: < 363787002 \|Observable entity\| OR < 386053000 \|Evaluation procedure\| v2: OBX-3 rim: code sct-attr: 116680003 \|Is a\|
id		0..1	string	There are no (further) constraints on this element Element id Observation.code.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.code.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
coding	Σ I	1..1	Coding	There are no (further) constraints on this element Element id Observation.code.coding Short description Code defined by a terminology system Definition A reference to a code defined by a terminology system. Requirements Allows for alternative encodings within a code system, and translations to other code systems. Comments Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true. Data type Coding Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()` Mappings rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..1	string	There are no (further) constraints on this element Element id Observation.code.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.code.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
system	Σ	1..1	uriFixed Value	Element id Observation.code.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value http://loinc.org Mappings rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..0	string	There are no (further) constraints on this element Element id Observation.code.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ I	1..1	code	There are no (further) constraints on this element Element id Observation.code.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ I	1..1	string	There are no (further) constraints on this element Element id Observation.code.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..0	boolean	There are no (further) constraints on this element Element id Observation.code.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..0	string	There are no (further) constraints on this element Element id Observation.code.text Short description Plain text representation of the concept Definition A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user. Requirements The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source. Comments Very often the text is the same as a displayName of one of the codings. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
subject	Σ I	1..1	Reference(http://fhir.synapxe.sg/StructureDefinition/profile-patient)	Element id Observation.subject Short description Who and/or what the observation is about Definition The patient, or group of patients, location, device, organization, procedure or practitioner this observation is about and into whose or what record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the `focus` element or the `code` itself specifies the actual focus of the observation. Requirements Observations have no value if you don't know who or what they're about. Comments One would expect this element to be a cardinality of 1..1. The only circumstance in which the subject can be missing is when the observation is made by a device that does not know the patient. In this case, the observation SHALL be matched to a patient through some context/channel matching technique, and at this point, the observation should be updated. The subject of an Observation may in some cases be a procedure. This supports the regulatory inspection use case where observations are captured during inspections of a procedure that is being performed (independent of any particular patient or whether patient related at all). Data type Reference(http://fhir.synapxe.sg/StructureDefinition/profile-patient) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.subject w5: FiveWs.subject[x] v2: PID-3 rim: participation[typeCode=RTGT]
id		0..1	string	There are no (further) constraints on this element Element id Observation.subject.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.subject.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
reference	Σ I	1..1	string	There are no (further) constraints on this element Element id Observation.subject.reference Short description Literal reference, Relative, internal or absolute URL Definition A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources. Comments Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
type	Σ	0..0	uriBinding	There are no (further) constraints on this element Element id Observation.subject.type Short description Type the reference refers to (e.g. "Patient") - must be a resource in resources Definition The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources). Comments This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference. Data type uri Binding Aa resource (or, for logical models, the URI of the logical model). ResourceType (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
identifier	Σ I	0..0	Identifier	There are no (further) constraints on this element Element id Observation.subject.identifier Short description Logical reference, when literal reference is not known Definition An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference. Comments When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation\|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any). This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()` Mappings rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier rim: .identifier
display	Σ I	0..0	string	There are no (further) constraints on this element Element id Observation.subject.display Short description Text alternative for the resource Definition Plain text narrative that identifies the resource in addition to the resource reference. Comments This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
focus	Σ I	0..0	Reference(Resource)	There are no (further) constraints on this element Element id Observation.focus Short description What the observation is about, when it is not about the subject of record Definition The actual focus of an observation when it is not the patient of record representing something or someone associated with the patient such as a spouse, parent, fetus, or donor. For example, fetus observations in a mother's record. The focus of an observation could also be an existing condition, an intervention, the subject's diet, another observation of the subject, or a body structure such as tumor or implanted device. An example use case would be using the Observation resource to capture whether the mother is trained to change her child's tracheostomy tube. In this example, the child is the patient of record and the mother is the focus. Comments Typically, an observation is made about the subject - a patient, or group of patients, location, or device - and the distinction between the subject and what is directly measured for an observation is specified in the observation code itself ( e.g., "Blood Glucose") and does not need to be represented separately using this element. Use `specimen` if a reference to a specimen is required. If a code is required instead of a resource use either `bodysite` for bodysites or the standard extension http://hl7.org/fhir/StructureDefinition/observation-focusCode. Data type Reference(Resource) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) w5: FiveWs.subject[x] v2: OBX-3 rim: participation[typeCode=SBJ]
encounter	Σ I	0..0	Reference(Encounter)	There are no (further) constraints on this element Element id Observation.encounter Short description Healthcare event during which this observation is made Alternate names Context Definition The healthcare event (e.g. a patient and healthcare provider interaction) during which this observation is made. Requirements For some observations it may be important to know the link between an observation and a particular encounter. Comments This will typically be the encounter the event occurred within, but some events may be initiated prior to or after the official completion of an encounter but still be tied to the context of the encounter (e.g. pre-admission laboratory tests). Data type Reference(Encounter) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.encounter w5: FiveWs.context v2: PV1 rim: inboundRelationship[typeCode=COMP].source[classCode=ENC, moodCode=EVN]
effective[x]	Σ	0..1		There are no (further) constraints on this element Element id Observation.effective[x] Short description Clinically relevant time/time-period for observation Alternate names Occurrence Definition The time or time-period the observed value is asserted as being true. For biological subjects - e.g. human patients - this is usually called the "physiologically relevant time". This is usually either the time of the procedure or of specimen collection, but very often the source of the date/time is not known, only the date/time itself. Requirements Knowing when an observation was deemed true is important to its relevance as well as determining trends. Comments At least a date should be present unless this observation is a historical report. For recording imprecise or "fuzzy" times (For example, a blood glucose measurement taken "after breakfast") use the Timing datatype which allow the measurement to be tied to regular life events. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Event.occurrence[x] w5: FiveWs.done[x] v2: OBX-14, and/or OBX-19 after v2.4 (depends on who observation made) rim: effectiveTime
effectivePeriod			Period	Data type Period
issued	Σ	1..1	instant	There are no (further) constraints on this element Element id Observation.issued Short description Date/Time this version was made available Definition The date and time this version of the observation was made available to providers, typically after the results have been reviewed and verified. Comments For Observations that don't require review and verification, it may be the same as the `lastUpdated` time of the resource itself. For Observations that do require review and verification for certain updates, it might not be the same as the `lastUpdated` time of the resource itself due to a non-clinically significant update that doesn't require the new version to be reviewed and verified again. Data type instant Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a w5: FiveWs.recorded v2: OBR-22 (or MSH-7), or perhaps OBX-19 (depends on who observation made) rim: participation[typeCode=AUT].time
performer	Σ I	0..0	Reference(Practitioner \| PractitionerRole \| Organization \| CareTeam \| Patient \| RelatedPerson)	There are no (further) constraints on this element Element id Observation.performer Short description Who is responsible for the observation Definition Who was responsible for asserting the observed value as "true". Requirements May give a degree of confidence in the observation and also indicates where follow-up questions should be directed. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository. Data type Reference(Practitioner \| PractitionerRole \| Organization \| CareTeam \| Patient \| RelatedPerson) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.performer.actor w5: FiveWs.actor v2: OBX-15 / (Practitioner) OBX-16, PRT-5:PRT-4='RO' / (Device) OBX-18 , PRT-10:PRT-4='EQUIP' / (Organization) OBX-23, PRT-8:PRT-4='PO' rim: participation[typeCode=PRF]
value[x]	Σ I	0..0		There are no (further) constraints on this element Element id Observation.value[x] Short description Actual result Definition The information determined as a result of making the observation, if the information has a simple value. Requirements An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations. Comments An observation may have: a single value here both a value and a set of related or component values only a set of related or component values. If a value is present, the datatype for this element should be determined by the `code`. CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the `code` defines a coded value. Attachment is used if the observation result value is a binary file such as an image. If the observation result value is derived from the binary file (for example 'X' detected and here is the the proof in this image), the binary file may be directly represented using DocumentReference and referenced by `derivedFrom`. The usage of valueReference is restricted to the MolecularSequence resource when used as a definitional resource, not as a patient-specific finding. . For additional guidance, see the Notes section below. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a sct-concept: < 441742003 \|Evaluation finding\| v2: OBX-2, OBX-5, OBX-6 rim: value sct-attr: 363714003 \|Interprets\|
dataAbsentReason	I	0..1	CodeableConceptBinding	There are no (further) constraints on this element Element id Observation.dataAbsentReason Short description Why the result is missing Definition Provides a reason why the expected value in the element Observation.value[x] is missing. Requirements For many results it is necessary to handle exceptional values in measurements. Comments Null or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be "detected", "not detected", "inconclusive", or "specimen unsatisfactory". The alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code "error" could be used when the measurement was not completed. Note that an observation may only be reported if there are values to report. For example differential cell counts values may be reported only when > 0. Because of these options, use-case agreements are required to interpret general observations for null or exceptional values. Data type CodeableConcept Binding Codes specifying why the result (`Observation.value[x]`) is missing. DataAbsentReason (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD v2: N/A rim: value.nullFlavor
id		0..1	string	There are no (further) constraints on this element Element id Observation.dataAbsentReason.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.dataAbsentReason.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
coding	Σ I	1..1	Coding	There are no (further) constraints on this element Element id Observation.dataAbsentReason.coding Short description Code defined by a terminology system Definition A reference to a code defined by a terminology system. Requirements Allows for alternative encodings within a code system, and translations to other code systems. Comments Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true. Data type Coding Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()` Mappings rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..1	string	There are no (further) constraints on this element Element id Observation.dataAbsentReason.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.dataAbsentReason.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
system	Σ	0..0	uri	There are no (further) constraints on this element Element id Observation.dataAbsentReason.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..0	string	There are no (further) constraints on this element Element id Observation.dataAbsentReason.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ I	1..1	codeFixed Value	Element id Observation.dataAbsentReason.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value unknown Mappings rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ I	0..0	string	There are no (further) constraints on this element Element id Observation.dataAbsentReason.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..0	boolean	There are no (further) constraints on this element Element id Observation.dataAbsentReason.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..0	string	There are no (further) constraints on this element Element id Observation.dataAbsentReason.text Short description Plain text representation of the concept Definition A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user. Requirements The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source. Comments Very often the text is the same as a displayName of one of the codings. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
interpretation		0..0	CodeableConceptBinding	There are no (further) constraints on this element Element id Observation.interpretation Short description High, low, normal, etc Alternate names Abnormal Flag Definition A categorical assessment of an observation value. For example, high, low, normal. Requirements For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result. Comments Historically used for laboratory results (known as 'abnormal flag' ), its use extends to other use cases where coded interpretations are relevant. Often reported as one or more simple compact codes this element is often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result. Data type CodeableConcept Binding Codes identifying interpretations of observations. ObservationInterpretationCodes (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD sct-concept: < 260245000 \|Findings values\| v2: OBX-8 rim: interpretationCode sct-attr: 363713009 \|Has interpretation\|
note		0..0	Annotation	There are no (further) constraints on this element Element id Observation.note Short description Comments about the observation Definition Comments about the observation or the results. Requirements Need to be able to provide free text additional information. Comments May include general statements about the observation, or statements about significant, unexpected or unreliable results values, or information about its source when relevant to its interpretation. Data type Annotation Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: N/A rim: Act v2: NTE-3 (partner NTE to OBX, or sometimes another (child?) OBX) rim: subjectOf.observationEvent[code="annotation"].value
bodySite	I	0..0	CodeableConcept	There are no (further) constraints on this element Element id Observation.bodySite Short description Observed body part Definition Indicates the site on the subject's body where the observation was made (i.e. the target site). Comments Only used if not implicit in code found in Observation.code. In many systems, this may be represented as a related observation instead of an inline component. Data type CodeableConcept Binding SNOMED CT Body site concepts SNOMEDCTBodyStructures (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD sct-concept: < 123037004 \|Body structure\| v2: OBX-20 rim: targetSiteCode sct-attr: 718497002 \|Inherent location\|
bodyStructure	I	0..0	Reference(BodyStructure)	There are no (further) constraints on this element Element id Observation.bodyStructure Short description Observed body structure Definition Indicates the body structure on the subject's body where the observation was made (i.e. the target site). Comments Only used if not implicit in code found in Observation.code or bodySite is used. In many systems, this may be represented as a related observation instead of an inline component. Data type Reference(BodyStructure) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) rim: targetSiteCode
method		0..0	CodeableConcept	There are no (further) constraints on this element Element id Observation.method Short description How it was done Definition Indicates the mechanism used to perform the observation. Requirements In some cases, method can impact results and is thus used for determining whether results can be compared or determining significance of results. Comments Only used if not implicit in code for Observation.code. Data type CodeableConcept Binding Methods for simple observations. ObservationMethods (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD v2: OBX-17 rim: methodCode
specimen	I	0..0	Reference(Specimen \| Group)	There are no (further) constraints on this element Element id Observation.specimen Short description Specimen used for this observation Definition The specimen that was used when this observation was made. Comments Should only be used if not implicit in code found in `Observation.code`. Observations are not made on specimens themselves; they are made on a subject, but in many cases by the means of a specimen. Note that although specimens are often involved, they are not always tracked and reported explicitly. Also note that observation resources may be used in contexts that track the specimen explicitly (e.g. Diagnostic Report). Data type Reference(Specimen \| Group) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` obs-9: If Observation.specimen is a reference to Group, the group can only have specimens `(reference.resolve().exists() and reference.resolve() is Group) implies reference.resolve().member.entity.resolve().all($this is Specimen)` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) sct-concept: < 123038009 \|Specimen\| v2: SPM segment rim: participation[typeCode=SPC].specimen sct-attr: 704319004 \|Inherent in\|
device	I	0..1	Reference(Device)	Element id Observation.device Short description A reference to the device that generates the measurements or the device settings for the device Definition A reference to the device that generates the measurements or the device settings for the device. Comments Note that this is not meant to represent a device involved in the transmission of the result, e.g., a gateway. Such devices may be documented using the Provenance resource where relevant. Data type Reference(Device) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) sct-concept: < 49062001 \|Device\| v2: OBX-17 / PRT -10 rim: participation[typeCode=DEV] sct-attr: 424226004 \|Using device\|
id		0..1	string	There are no (further) constraints on this element Element id Observation.device.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.device.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
reference	Σ I	0..0	string	There are no (further) constraints on this element Element id Observation.device.reference Short description Literal reference, Relative, internal or absolute URL Definition A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources. Comments Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
type	Σ	1..1	uriBindingFixed Value	Element id Observation.device.type Short description Type the reference refers to (e.g. "Patient") - must be a resource in resources Definition The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources). Comments This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference. Data type uri Binding Aa resource (or, for logical models, the URI of the logical model). ResourceType (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value Device Mappings rim: n/a rim: N/A
identifier	Σ I	0..1	Identifier	There are no (further) constraints on this element Element id Observation.device.identifier Short description Logical reference, when literal reference is not known Definition An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference. Comments When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation\|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any). This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()` Mappings rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier rim: .identifier
id		0..1	string	There are no (further) constraints on this element Element id Observation.device.identifier.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.device.identifier.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
use	Σ ?!	0..0	codeBinding	There are no (further) constraints on this element Element id Observation.device.identifier.use Short description usual \| official \| temp \| secondary \| old (If known) Definition The purpose of this identifier. Requirements Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers. Comments Applications can assume that an identifier is permanent unless it explicitly says that it is temporary. Data type code Binding Identifies the purpose for this identifier, if known . IdentifierUse (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: N/A rim: Role.code or implied by context
type	Σ	0..0	CodeableConceptBinding	There are no (further) constraints on this element Element id Observation.device.identifier.type Short description Description of identifier Definition A coded type for the identifier that can be used to determine which identifier to use for a specific purpose. Requirements Allows users to make use of identifiers when the identifier system is not known. Comments This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type. Data type CodeableConcept Binding A coded type for an identifier that can be used to determine which identifier to use for a specific purpose. IdentifierTypeCodes (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD v2: CX.5 rim: Role.code or implied by context
system	Σ	1..1	uriFixed Value	Element id Observation.device.identifier.system Short description The namespace for the identifier value Definition Establishes the namespace for the value - that is, an absolute URL that describes a set values that are unique. Requirements There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers. Comments Identifier.system is always case sensitive. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value http://fhir.synapxe.sg/NamingSystem/device-guid Mappings rim: n/a v2: CX.4 / EI-2-4 rim: II.root or Role.id.root servd: ./IdentifierType
value	Σ I	1..1	string	There are no (further) constraints on this element Element id Observation.device.identifier.value Short description The value that is unique Definition The portion of the identifier typically relevant to the user and which is unique within the context of the system. Comments If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the http://hl7.org/fhir/StructureDefinition/rendered-value). Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Examples General 123456 Mappings rim: n/a v2: CX.1 / EI.1 rim: II.extension or II.root if system indicates OID or GUID (Or Role.id.extension or root) servd: ./Value
period	Σ I	0..0	Period	There are no (further) constraints on this element Element id Observation.device.identifier.period Short description Time period when id is/was valid for use Definition Time period during which identifier is/was valid for use. Comments A Period specifies a range of time; the context of use will specify whether the entire range applies (e.g. "the patient was an inpatient of the hospital for this time range") or one value from the range applies (e.g. "give to the patient between these two times"). Period is not used for a duration (a measure of elapsed time). See Duration. Data type Period Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` per-1: If present, start SHALL have a lower or equal value than end `start.hasValue().not() or end.hasValue().not() or (start.lowBoundary() <= end.highBoundary())` Mappings rim: n/a v2: DR rim: IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"] v2: CX.7 + CX.8 rim: Role.effectiveTime or implied by context servd: ./StartDate and ./EndDate
assigner	Σ I	0..0	Reference(Organization)	There are no (further) constraints on this element Element id Observation.device.identifier.assigner Short description Organization that issued id (may be just text) Definition Organization that issued/manages the identifier. Comments The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization. Data type Reference(Organization) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) v2: CX.4 / (CX.4,CX.9,CX.10) rim: II.assigningAuthorityName but note that this is an improper use by the definition of the field. Also Role.scoper servd: ./IdentifierIssuingAuthority
display	Σ I	0..0	string	There are no (further) constraints on this element Element id Observation.device.display Short description Text alternative for the resource Definition Plain text narrative that identifies the resource in addition to the resource reference. Comments This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: N/A
referenceRange	I	0..0	BackboneElement	There are no (further) constraints on this element Element id Observation.referenceRange Short description Provides guide for interpretation Definition Guidance on how to interpret the value by comparison to a normal or recommended range. Multiple reference ranges are interpreted as an "OR". In other words, to represent two distinct target populations, two `referenceRange` elements would be used. Requirements Knowing what values are considered "normal" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts. Comments Most observations only have one generic reference range. Systems MAY choose to restrict to only supplying the relevant reference range based on knowledge about the patient (e.g., specific to the patient's age, gender, weight and other factors), but this might not be possible or appropriate. Whenever more than one reference range is supplied, the differences between them SHOULD be provided in the reference range and/or age properties. Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` obs-3: Must have at least a low or a high or text `low.exists() or high.exists() or text.exists()` Mappings rim: n/a v2: OBX-7 rim: outboundRelationship[typeCode=REFV]/target[classCode=OBS, moodCode=EVN]
hasMember	Σ I	0..0	Reference(Observation \| QuestionnaireResponse \| MolecularSequence)	There are no (further) constraints on this element Element id Observation.hasMember Short description Related resource that belongs to the Observation group Definition This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group. Comments When using this element, an observation will typically have either a value or a set of related resources, although both may be present in some cases. For a discussion on the ways Observations can assembled in groups together, see Notes below. Note that a system may calculate results from QuestionnaireResponse into a final score and represent the score as an Observation. Data type Reference(Observation \| QuestionnaireResponse \| MolecularSequence) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) v2: Relationships established by OBX-4 usage rim: outBoundRelationship
derivedFrom	Σ I	0..0	Reference(DocumentReference \| ImagingStudy \| ImagingSelection \| QuestionnaireResponse \| Observation \| MolecularSequence \| GenomicStudy)	There are no (further) constraints on this element Element id Observation.derivedFrom Short description Related resource from which the observation is made Definition The target resource that represents a measurement from which this observation value is derived. For example, a calculated anion gap or a fetal measurement based on an ultrasound image. Comments All the reference choices that are listed in this element can represent clinical observations and other measurements that may be the source for a derived value. The most common reference will be another Observation. For a discussion on the ways Observations can assembled in groups together, see Notes below. Data type Reference(DocumentReference \| ImagingStudy \| ImagingSelection \| QuestionnaireResponse \| Observation \| MolecularSequence \| GenomicStudy) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) v2: Relationships established by OBX-4 usage rim: .targetObservation
component	Σ I	0..*	BackboneElement	There are no (further) constraints on this element Element id Observation.component Short description Component results Definition Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations. Requirements Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation. Comments For a discussion on the ways Observations can be assembled in groups together see Notes below. Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: containment by OBX-4? rim: outBoundRelationship[typeCode=COMP]
id		0..1	string	There are no (further) constraints on this element Element id Observation.component.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.component.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
modifierExtension	Σ ?! I	0..*	Extension	There are no (further) constraints on this element Element id Observation.component.modifierExtension Short description Extensions that cannot be ignored even if unrecognized Alternate names extensions, user content, modifiers Definition May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Requirements Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
code	Σ I	1..1	CodeableConceptPattern	Element id Observation.component.code Short description Type of component observation (code / type) Definition Describes what was observed. Sometimes this is called the observation "code". Requirements Knowing what kind of observation is being made is essential to understanding the observation. Comments All code-value and component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation. Data type CodeableConcept Binding Codes identifying names of simple observations. LOINCCodes (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern { "coding": [ { "system": "http://loinc.org" } ] } Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD w5: FiveWs.what[x] sct-concept: < 363787002 \|Observable entity\| OR < 386053000 \|Evaluation procedure\| v2: OBX-3 rim: code
id		0..1	string	There are no (further) constraints on this element Element id Observation.component.code.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.component.code.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
coding	Σ I	1..1	CodingPattern	There are no (further) constraints on this element Element id Observation.component.code.coding Short description Code defined by a terminology system Definition A reference to a code defined by a terminology system. Requirements Allows for alternative encodings within a code system, and translations to other code systems. Comments Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true. Data type Coding Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()` Pattern { "system": "http://loinc.org" } Mappings rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..1	string	There are no (further) constraints on this element Element id Observation.component.code.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.component.code.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
system	Σ	1..1	uriFixed ValuePattern	Element id Observation.component.code.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value http://loinc.org Mappings rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..0	string	There are no (further) constraints on this element Element id Observation.component.code.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ I	1..1	code	There are no (further) constraints on this element Element id Observation.component.code.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ I	1..1	string	There are no (further) constraints on this element Element id Observation.component.code.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..0	boolean	There are no (further) constraints on this element Element id Observation.component.code.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..0	string	There are no (further) constraints on this element Element id Observation.component.code.text Short description Plain text representation of the concept Definition A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user. Requirements The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source. Comments Very often the text is the same as a displayName of one of the codings. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
value[x]	Σ	1..1		There are no (further) constraints on this element Element id Observation.component.value[x] Short description Actual component result Definition The information determined as a result of making the observation, if the information has a simple value. Requirements An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations. Comments Used when observation has a set of component observations: An observation may have both a value (e.g. an Apgar score) and component observations (the observations from which the Apgar score was derived). If a value is present, the datatype for this element should be determined by the `code`. CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the `code` defines a coded value. Attachment is used if the observation result value is a binary file such as an image. If the observation result value is derived from the binary file (for example 'X' detected and here is the the proof in this image), the binary file may be directly represented using DocumentReference and referenced by `derivedFrom`. If a value is present, the datatype for this element should be determined by the `code`. CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the `code` defines a coded value. Attachment is used if the observation result value is a binary file such as an image. If the observation result value is derived from the binary file (for example 'X' detected and here is the the proof in this image), the binary file may be directly represented using DocumentReference and referenced by `derivedFrom`. The usage of valueReference is restricted to the MolecularSequence resource when used as a definitional resource, not as a patient-specific finding. . For additional guidance, see the Notes section below. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a sct-concept: 363714003 \|Interprets\| < 441742003 \|Evaluation finding\| v2: OBX-2, OBX-5, OBX-6 rim: value sct-attr: 363714003 \|Interprets\|
valueQuantity			Quantity	Data type Quantity
id		0..1	string	There are no (further) constraints on this element Element id Observation.component.value[x].id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type string Mappings rim: n/a
extension	I	0..*	Extension	There are no (further) constraints on this element Element id Observation.component.value[x].extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Sliced: Unordered, Open, by url(Value) Extensions are always sliced by (at least) url Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: n/a rim: N/A
value	Σ	1..1	decimal	There are no (further) constraints on this element Element id Observation.component.value[x].value Short description Numerical value (with implicit precision) Definition The value of the measured amount. The value includes an implicit precision in the presentation of the value. Requirements Precision is handled implicitly in almost all cases of measurement. Comments The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books). Data type decimal Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.2 / CQ - N/A rim: PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value
comparator	Σ ?!	0..0	codeBinding	There are no (further) constraints on this element Element id Observation.component.value[x].comparator Short description < \| <= \| >= \| > \| ad - how to understand the value Definition How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value. Requirements Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Meaning when missing* If there is no comparator, then there is no modification of the value Data type code Binding How the Quantity should be understood and represented. QuantityComparator (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: SN.1 / CQ.1 rim: IVL properties
unit	Σ	1..1	string	There are no (further) constraints on this element Element id Observation.component.value[x].unit Short description Unit representation Definition A human-readable form of the unit. Requirements There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms. Comments Note that FHIR strings SHALL NOT exceed 1,048,576 (10241024) characters in size Data type* string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.unit
system	Σ I	1..1	uriFixed Value	Element id Observation.component.value[x].system Short description System that defines coded unit form Definition The identification of the system that provides the coded form of the unit. Requirements Need to know the system that defines the coded form of the unit. Comments see http://en.wikipedia.org/wiki/Uniform_resource_identifier Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value http://unitsofmeasure.org Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: CO.codeSystem, PQ.translation.codeSystem
code	Σ I	1..1	code	There are no (further) constraints on this element Element id Observation.component.value[x].code Short description Coded form of the unit Definition A computer processable form of the unit in some unit representation system. Requirements Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest. Comments The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system. Data type code Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.code, MO.currency, PQ.translation.code
dataAbsentReason		0..0	CodeableConceptBinding	There are no (further) constraints on this element Element id Observation.component.dataAbsentReason Short description Why the component result is missing Definition Provides a reason why the expected value in the element Observation.component.value[x] is missing. Requirements For many results it is necessary to handle exceptional values in measurements. Comments "Null" or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be "detected", "not detected", "inconclusive", or "test not done". The alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code "error" could be used when the measurement was not completed. Because of these options, use-case agreements are required to interpret general observations for exceptional values. Data type CodeableConcept Binding Codes specifying why the result (`Observation.value[x]`) is missing. DataAbsentReason (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD v2: N/A rim: value.nullFlavor
interpretation		0..0	CodeableConceptBinding	There are no (further) constraints on this element Element id Observation.component.interpretation Short description High, low, normal, etc Alternate names Abnormal Flag Definition A categorical assessment of an observation value. For example, high, low, normal. Requirements For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result. Comments Historically used for laboratory results (known as 'abnormal flag' ), its use extends to other use cases where coded interpretations are relevant. Often reported as one or more simple compact codes this element is often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result. Data type CodeableConcept Binding Codes identifying interpretations of observations. ObservationInterpretationCodes (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD sct-concept: < 260245000 \|Findings values\| v2: OBX-8 rim: interpretationCode sct-attr: 363713009 \|Has interpretation\|
referenceRange		0..0	see (referenceRange)	There are no (further) constraints on this element Element id Observation.component.referenceRange Short description Provides guide for interpretation of component result Definition Guidance on how to interpret the value by comparison to a normal or recommended range. Requirements Knowing what values are considered "normal" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts. Comments Most observations only have one generic reference range. Systems MAY choose to restrict to only supplying the relevant reference range based on knowledge about the patient (e.g., specific to the patient's age, gender, weight and other factors), but this might not be possible or appropriate. Whenever more than one reference range is supplied, the differences between them SHOULD be provided in the reference range and/or age properties. Mappings v2: OBX-7 rim: outboundRelationship[typeCode=REFV]/target[classCode=OBS, moodCode=EVN]

Observation
Definition	Measurements and simple assertions made about a patient, device or other subject.
Cardinality	0...*
Alias	Vital Signs, Measurement, Results, Tests
Comments	Used for simple observations such as device measurements, laboratory atomic results, vital signs, height, weight, smoking status, comments, etc. Other resources are used to provide context for observations such as laboratory reports, etc.
Invariants	dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources `contained.contained.empty()` dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated `contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()` dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource `contained.where((('#'+id in (%resource.descendants().reference \| %resource.descendants().ofType(canonical) \| %resource.descendants().ofType(uri) \| %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()` dom-6: A resource should have narrative for robust management text.`div`.exists() dom-5: If a resource is contained in another resource, it SHALL NOT have a security label `contained.meta.security.empty()` obs-7: If Observation.component.code is the same as Observation.code, then Observation.value SHALL NOT be present (the Observation.component.value[x] holds the value). `value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()` obs-8: bodyStructure SHALL only be present if Observation.bodySite is not present `bodySite.exists() implies bodyStructure.empty()` obs-6: dataAbsentReason SHALL only be present if Observation.value[x] is not present `dataAbsentReason.empty() or value.empty()`
Mappings	rim: n/a rim: Entity. Role, or Act rim: Entity, Role, or Act workflow: Event w5: clinical.diagnostics sct-concept: < 363787002 \|Observable entity\| v2: OBX rim: Observation[classCode=OBS, moodCode=EVN]
Observation.id
Definition	The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.
Cardinality	0...1
Type	id
Summary	True
Comments	Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case.
Observation.meta
Definition	The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.
Cardinality	0...1
Type	Meta
Summary	True
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Observation.implicitRules
Definition	A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.
Cardinality	0...1
Type	uri
Modifier	True
Summary	True
Comments	Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of its narrative along with other profiles, value sets, etc.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Observation.language
Definition	The base language in which the resource is written.
Cardinality	0...1
Type	code
Binding	IETF language tag for a human language AllLanguages (required)
Comments	Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a
Observation.text
Definition	A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.
Cardinality	0...1
Type	Narrative
Alias	narrative, html, xhtml, display
Comments	Contained resources do not have a narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A rim: Act.text?
Observation.contained
Definition	These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning.
Cardinality	0...*
Type	Resource
Alias	inline resources, anonymous resources, contained resources
Comments	This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags in their meta elements, but SHALL NOT have security labels.
Mappings	rim: n/a rim: Entity. Role, or Act rim: N/A
Observation.extension
Definition	May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.identifier
Definition	A unique identifier assigned to this observation.
Cardinality	0...0
Type	Identifier
Summary	True
Requirements	Allows observations to be distinguished and referenced.
Comments	The rules of the identifier.type determine if a check digit is part of the ID value or sent separately, such as through the checkDigit extension.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()`
Mappings	rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier workflow: Event.identifier w5: FiveWs.identifier v2: OBX-21 For OBX segments from systems without OBX-21 support a combination of ORC/OBR and OBX must be negotiated between trading partners to uniquely identify the OBX segment. Depending on how V2 has been implemented each of these may be an option: 1) OBR-3 + OBX-3 + OBX-4 or 2) OBR-3 + OBR-4 + OBX-3 + OBX-4 or 3) some other way to uniquely ID the OBR/ORC + OBX-3 + OBX-4. rim: id
Observation.instantiates[x]
Definition	The reference to a FHIR ObservationDefinition resource that provides the definition that is adhered to in whole or in part by this Observation instance.
Cardinality	0...0
Type	canonical(ObservationDefinition)
Summary	True
Comments	ObservationDefinition can be referenced by its canonical url using instantiatesCanonical, or by a name or an identifier using the appropriate sub-elements of instantiatesReference.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a workflow: Event.instantiatesCanonical rim: .outboundRelationship[typeCode=DEFN].target
Observation.basedOn
Definition	A plan, proposal or order that is fulfilled in whole or in part by this event. For example, a MedicationRequest may require a patient to have laboratory test performed before it is dispensed.
Cardinality	0...0
Type	Reference(CarePlan \| DeviceRequest \| ImmunizationRecommendation \| MedicationRequest \| NutritionOrder \| ServiceRequest)
Summary	True
Alias	Fulfills
Requirements	Allows tracing of authorization for the event and tracking whether proposals/recommendations were acted upon.
Comments	References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.basedOn v2: ORC rim: .inboundRelationship[typeCode=COMP].source[moodCode=EVN]
Observation.triggeredBy
Definition	Identifies the observation(s) that triggered the performance of this observation.
Cardinality	0...0
Type	BackboneElement
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: ORC rim: .inboundRelationship[typeCode=COMP].source[moodCode=EVN]
Observation.triggeredBy.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.triggeredBy.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.triggeredBy.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content, modifiers
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.triggeredBy.observation
Definition	Reference to the triggering observation.
Cardinality	1...1
Type	Reference(Observation)
Summary	True
Comments	References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) rim: outBoundRelationship
Observation.triggeredBy.type
Definition	The type of trigger. Reflex \| Repeat \| Re-run.
Cardinality	1...1
Type	code
Binding	The type of TriggeredBy Observation. TriggeredBytype (required)
Summary	True
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: code
Observation.triggeredBy.reason
Definition	Provides the reason why this observation was performed as a result of the observation(s) referenced.
Cardinality	0...1
Type	string
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: annotation
Observation.partOf
Definition	A larger event of which this particular Observation is a component or step. For example, an observation as part of a procedure.
Cardinality	0...0
Type	Reference(MedicationAdministration \| MedicationDispense \| MedicationStatement \| Procedure \| Immunization \| ImagingStudy \| GenomicStudy)
Summary	True
Alias	Container
Comments	To link an Observation to an Encounter use `encounter`. See the Notes below for guidance on referencing another Observation.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.partOf v2: Varies by domain rim: .outboundRelationship[typeCode=FLFS].target
Observation.status
Definition	The status of the result value.
Cardinality	1...1
Type	code
Binding	Codes providing the status of an observation. ObservationStatus (required)
Modifier	True
Summary	True
Requirements	Need to track the status of individual results. Some results are finalized before the whole report is finalized.
Comments	This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	final
Mappings	rim: n/a workflow: Event.status w5: FiveWs.status sct-concept: < 445584004 \|Report by finality status\| v2: OBX-11 rim: status Amended & Final are differentiated by whether it is the subject of a ControlAct event with a type of "revise"
Observation.category
Definition	A code that classifies the general type of observation being made.
Cardinality	1...1
Type	CodeableConcept
Binding	Codes for high level observation categories. ObservationCategoryCodes (preferred)
Requirements	Used for filtering what observations are retrieved and displayed.
Comments	In addition to the required category valueset, this element allows various categorization schemes based on the owner’s definition of the category and effectively multiple categories can be used at once. The level of granularity is defined by the category concepts in the value set.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD w5: FiveWs.class rim: .outboundRelationship[typeCode="COMP].target[classCode="LIST", moodCode="EVN"].code
Observation.category.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.category.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.category.coding
Definition	A reference to a code defined by a terminology system.
Cardinality	1...1
Type	Coding
Summary	True
Requirements	Allows for alternative encodings within a code system, and translations to other code systems.
Comments	Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()`
Mappings	rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
Observation.category.coding.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.category.coding.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.category.coding.system
Definition	The identification of the code system that defines the meaning of the symbol in the code.
Cardinality	1...1
Type	uri
Summary	True
Requirements	Need to be unambiguous about the source of the definition of the symbol.
Comments	The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	http://terminology.hl7.org/CodeSystem/observation-category
Mappings	rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
Observation.category.coding.version
Definition	The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.
Cardinality	0...0
Type	string
Summary	True
Comments	Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
Observation.category.coding.code
Definition	A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).
Cardinality	1...1
Type	code
Summary	True
Requirements	Need to refer to a particular code in the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	vital-signs
Mappings	rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
Observation.category.coding.display
Definition	A representation of the meaning of the code in the system, following the rules of the system.
Cardinality	1...1
Type	string
Summary	True
Requirements	Need to be able to carry a human-readable meaning of the code for readers that do not know the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	Vital Signs
Mappings	rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
Observation.category.coding.userSelected
Definition	Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).
Cardinality	0...0
Type	boolean
Summary	True
Requirements	This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.
Comments	Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
Observation.category.text
Definition	A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.
Cardinality	0...0
Type	string
Summary	True
Requirements	The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.
Comments	Very often the text is the same as a displayName of one of the codings.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
Observation.code
Definition	Describes what was observed. Sometimes this is called the observation "name".
Cardinality	1...1
Type	CodeableConcept
Binding	Codes identifying names of simple observations. LOINCCodes (example)
Summary	True
Alias	Name
Requirements	Knowing what kind of observation is being made is essential to understanding the observation.
Comments	All code-value and, if present, component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD workflow: Event.code w5: FiveWs.what[x] sct-concept: < 363787002 \|Observable entity\| OR < 386053000 \|Evaluation procedure\| v2: OBX-3 rim: code sct-attr: 116680003 \|Is a\|
Observation.code.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.code.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.code.coding
Definition	A reference to a code defined by a terminology system.
Cardinality	1...1
Type	Coding
Summary	True
Requirements	Allows for alternative encodings within a code system, and translations to other code systems.
Comments	Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()`
Mappings	rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
Observation.code.coding.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.code.coding.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.code.coding.system
Definition	The identification of the code system that defines the meaning of the symbol in the code.
Cardinality	1...1
Type	uri
Summary	True
Requirements	Need to be unambiguous about the source of the definition of the symbol.
Comments	The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	http://loinc.org
Mappings	rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
Observation.code.coding.version
Definition	The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.
Cardinality	0...0
Type	string
Summary	True
Comments	Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
Observation.code.coding.code
Definition	A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).
Cardinality	1...1
Type	code
Summary	True
Requirements	Need to refer to a particular code in the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
Observation.code.coding.display
Definition	A representation of the meaning of the code in the system, following the rules of the system.
Cardinality	1...1
Type	string
Summary	True
Requirements	Need to be able to carry a human-readable meaning of the code for readers that do not know the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
Observation.code.coding.userSelected
Definition	Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).
Cardinality	0...0
Type	boolean
Summary	True
Requirements	This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.
Comments	Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
Observation.code.text
Definition	A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.
Cardinality	0...0
Type	string
Summary	True
Requirements	The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.
Comments	Very often the text is the same as a displayName of one of the codings.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
Observation.subject
Definition	The patient, or group of patients, location, device, organization, procedure or practitioner this observation is about and into whose or what record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the `focus` element or the `code` itself specifies the actual focus of the observation.
Cardinality	1...1
Type	Reference(http://fhir.synapxe.sg/StructureDefinition/profile-patient)
Summary	True
Requirements	Observations have no value if you don't know who or what they're about.
Comments	One would expect this element to be a cardinality of 1..1. The only circumstance in which the subject can be missing is when the observation is made by a device that does not know the patient. In this case, the observation SHALL be matched to a patient through some context/channel matching technique, and at this point, the observation should be updated. The subject of an Observation may in some cases be a procedure. This supports the regulatory inspection use case where observations are captured during inspections of a procedure that is being performed (independent of any particular patient or whether patient related at all).
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.subject w5: FiveWs.subject[x] v2: PID-3 rim: participation[typeCode=RTGT]
Observation.subject.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.subject.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.subject.reference
Definition	A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.
Cardinality	1...1
Type	string
Summary	True
Comments	Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Observation.subject.type
Definition	The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).
Cardinality	0...0
Type	uri
Binding	Aa resource (or, for logical models, the URI of the logical model). ResourceType (extensible)
Summary	True
Comments	This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Observation.subject.identifier
Definition	An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.
Cardinality	0...0
Type	Identifier
Summary	True
Comments	When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation\|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any). This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()`
Mappings	rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier rim: .identifier
Observation.subject.display
Definition	Plain text narrative that identifies the resource in addition to the resource reference.
Cardinality	0...0
Type	string
Summary	True
Comments	This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Observation.focus
Definition	The actual focus of an observation when it is not the patient of record representing something or someone associated with the patient such as a spouse, parent, fetus, or donor. For example, fetus observations in a mother's record. The focus of an observation could also be an existing condition, an intervention, the subject's diet, another observation of the subject, or a body structure such as tumor or implanted device. An example use case would be using the Observation resource to capture whether the mother is trained to change her child's tracheostomy tube. In this example, the child is the patient of record and the mother is the focus.
Cardinality	0...0
Type	Reference(Resource)
Summary	True
Comments	Typically, an observation is made about the subject - a patient, or group of patients, location, or device - and the distinction between the subject and what is directly measured for an observation is specified in the observation code itself ( e.g., "Blood Glucose") and does not need to be represented separately using this element. Use `specimen` if a reference to a specimen is required. If a code is required instead of a resource use either `bodysite` for bodysites or the standard extension http://hl7.org/fhir/StructureDefinition/observation-focusCode.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) w5: FiveWs.subject[x] v2: OBX-3 rim: participation[typeCode=SBJ]
Observation.encounter
Definition	The healthcare event (e.g. a patient and healthcare provider interaction) during which this observation is made.
Cardinality	0...0
Type	Reference(Encounter)
Summary	True
Alias	Context
Requirements	For some observations it may be important to know the link between an observation and a particular encounter.
Comments	This will typically be the encounter the event occurred within, but some events may be initiated prior to or after the official completion of an encounter but still be tied to the context of the encounter (e.g. pre-admission laboratory tests).
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.encounter w5: FiveWs.context v2: PV1 rim: inboundRelationship[typeCode=COMP].source[classCode=ENC, moodCode=EVN]
Observation.effective[x]
Definition	The time or time-period the observed value is asserted as being true. For biological subjects - e.g. human patients - this is usually called the "physiologically relevant time". This is usually either the time of the procedure or of specimen collection, but very often the source of the date/time is not known, only the date/time itself.
Cardinality	0...1
Type	Period
Summary	True
Alias	Occurrence
Requirements	Knowing when an observation was deemed true is important to its relevance as well as determining trends.
Comments	At least a date should be present unless this observation is a historical report. For recording imprecise or "fuzzy" times (For example, a blood glucose measurement taken "after breakfast") use the Timing datatype which allow the measurement to be tied to regular life events.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a workflow: Event.occurrence[x] w5: FiveWs.done[x] v2: OBX-14, and/or OBX-19 after v2.4 (depends on who observation made) rim: effectiveTime
Observation.issued
Definition	The date and time this version of the observation was made available to providers, typically after the results have been reviewed and verified.
Cardinality	1...1
Type	instant
Summary	True
Comments	For Observations that don't require review and verification, it may be the same as the `lastUpdated` time of the resource itself. For Observations that do require review and verification for certain updates, it might not be the same as the `lastUpdated` time of the resource itself due to a non-clinically significant update that doesn't require the new version to be reviewed and verified again.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a w5: FiveWs.recorded v2: OBR-22 (or MSH-7), or perhaps OBX-19 (depends on who observation made) rim: participation[typeCode=AUT].time
Observation.performer
Definition	Who was responsible for asserting the observed value as "true".
Cardinality	0...0
Type	Reference(Practitioner \| PractitionerRole \| Organization \| CareTeam \| Patient \| RelatedPerson)
Summary	True
Requirements	May give a degree of confidence in the observation and also indicates where follow-up questions should be directed.
Comments	References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.performer.actor w5: FiveWs.actor v2: OBX-15 / (Practitioner) OBX-16, PRT-5:PRT-4='RO' / (Device) OBX-18 , PRT-10:PRT-4='EQUIP' / (Organization) OBX-23, PRT-8:PRT-4='PO' rim: participation[typeCode=PRF]
Observation.value[x]
Definition	The information determined as a result of making the observation, if the information has a simple value.
Cardinality	0...0
Type	Quantity
Summary	True
Requirements	An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.
Comments	An observation may have: a single value here both a value and a set of related or component values only a set of related or component values. If a value is present, the datatype for this element should be determined by the `code`. CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the `code` defines a coded value. Attachment is used if the observation result value is a binary file such as an image. If the observation result value is derived from the binary file (for example 'X' detected and here is the the proof in this image), the binary file may be directly represented using DocumentReference and referenced by `derivedFrom`. The usage of valueReference is restricted to the MolecularSequence resource when used as a definitional resource, not as a patient-specific finding. . For additional guidance, see the Notes section below.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a sct-concept: < 441742003 \|Evaluation finding\| v2: OBX-2, OBX-5, OBX-6 rim: value sct-attr: 363714003 \|Interprets\|
Observation.dataAbsentReason
Definition	Provides a reason why the expected value in the element Observation.value[x] is missing.
Cardinality	0...1
Type	CodeableConcept
Binding	Codes specifying why the result (`Observation.value[x]`) is missing. DataAbsentReason (extensible)
Requirements	For many results it is necessary to handle exceptional values in measurements.
Comments	Null or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be "detected", "not detected", "inconclusive", or "specimen unsatisfactory". The alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code "error" could be used when the measurement was not completed. Note that an observation may only be reported if there are values to report. For example differential cell counts values may be reported only when > 0. Because of these options, use-case agreements are required to interpret general observations for null or exceptional values.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD v2: N/A rim: value.nullFlavor
Observation.dataAbsentReason.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.dataAbsentReason.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.dataAbsentReason.coding
Definition	A reference to a code defined by a terminology system.
Cardinality	1...1
Type	Coding
Summary	True
Requirements	Allows for alternative encodings within a code system, and translations to other code systems.
Comments	Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()`
Mappings	rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
Observation.dataAbsentReason.coding.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.dataAbsentReason.coding.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.dataAbsentReason.coding.system
Definition	The identification of the code system that defines the meaning of the symbol in the code.
Cardinality	0...0
Type	uri
Summary	True
Requirements	Need to be unambiguous about the source of the definition of the symbol.
Comments	The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
Observation.dataAbsentReason.coding.version
Definition	The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.
Cardinality	0...0
Type	string
Summary	True
Comments	Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
Observation.dataAbsentReason.coding.code
Definition	A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).
Cardinality	1...1
Type	code
Summary	True
Requirements	Need to refer to a particular code in the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	unknown
Mappings	rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
Observation.dataAbsentReason.coding.display
Definition	A representation of the meaning of the code in the system, following the rules of the system.
Cardinality	0...0
Type	string
Summary	True
Requirements	Need to be able to carry a human-readable meaning of the code for readers that do not know the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
Observation.dataAbsentReason.coding.userSelected
Definition	Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).
Cardinality	0...0
Type	boolean
Summary	True
Requirements	This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.
Comments	Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
Observation.dataAbsentReason.text
Definition	A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.
Cardinality	0...0
Type	string
Summary	True
Requirements	The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.
Comments	Very often the text is the same as a displayName of one of the codings.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
Observation.interpretation
Definition	A categorical assessment of an observation value. For example, high, low, normal.
Cardinality	0...0
Type	CodeableConcept
Binding	Codes identifying interpretations of observations. ObservationInterpretationCodes (extensible)
Alias	Abnormal Flag
Requirements	For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result.
Comments	Historically used for laboratory results (known as 'abnormal flag' ), its use extends to other use cases where coded interpretations are relevant. Often reported as one or more simple compact codes this element is often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD sct-concept: < 260245000 \|Findings values\| v2: OBX-8 rim: interpretationCode sct-attr: 363713009 \|Has interpretation\|
Observation.note
Definition	Comments about the observation or the results.
Cardinality	0...0
Type	Annotation
Requirements	Need to be able to provide free text additional information.
Comments	May include general statements about the observation, or statements about significant, unexpected or unreliable results values, or information about its source when relevant to its interpretation.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: N/A rim: Act v2: NTE-3 (partner NTE to OBX, or sometimes another (child?) OBX) rim: subjectOf.observationEvent[code="annotation"].value
Observation.bodySite
Definition	Indicates the site on the subject's body where the observation was made (i.e. the target site).
Cardinality	0...0
Type	CodeableConcept
Binding	SNOMED CT Body site concepts SNOMEDCTBodyStructures (example)
Comments	Only used if not implicit in code found in Observation.code. In many systems, this may be represented as a related observation instead of an inline component.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD sct-concept: < 123037004 \|Body structure\| v2: OBX-20 rim: targetSiteCode sct-attr: 718497002 \|Inherent location\|
Observation.bodyStructure
Definition	Indicates the body structure on the subject's body where the observation was made (i.e. the target site).
Cardinality	0...0
Type	Reference(BodyStructure)
Comments	Only used if not implicit in code found in Observation.code or bodySite is used. In many systems, this may be represented as a related observation instead of an inline component.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) rim: targetSiteCode
Observation.method
Definition	Indicates the mechanism used to perform the observation.
Cardinality	0...0
Type	CodeableConcept
Binding	Methods for simple observations. ObservationMethods (example)
Requirements	In some cases, method can impact results and is thus used for determining whether results can be compared or determining significance of results.
Comments	Only used if not implicit in code for Observation.code.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD v2: OBX-17 rim: methodCode
Observation.specimen
Definition	The specimen that was used when this observation was made.
Cardinality	0...0
Type	Reference(Specimen \| Group)
Comments	Should only be used if not implicit in code found in `Observation.code`. Observations are not made on specimens themselves; they are made on a subject, but in many cases by the means of a specimen. Note that although specimens are often involved, they are not always tracked and reported explicitly. Also note that observation resources may be used in contexts that track the specimen explicitly (e.g. Diagnostic Report).
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()` obs-9: If Observation.specimen is a reference to Group, the group can only have specimens `(reference.resolve().exists() and reference.resolve() is Group) implies reference.resolve().member.entity.resolve().all($this is Specimen)`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) sct-concept: < 123038009 \|Specimen\| v2: SPM segment rim: participation[typeCode=SPC].specimen sct-attr: 704319004 \|Inherent in\|
Observation.device
Definition	A reference to the device that generates the measurements or the device settings for the device.
Cardinality	0...1
Type	Reference(Device)
Comments	Note that this is not meant to represent a device involved in the transmission of the result, e.g., a gateway. Such devices may be documented using the Provenance resource where relevant.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) sct-concept: < 49062001 \|Device\| v2: OBX-17 / PRT -10 rim: participation[typeCode=DEV] sct-attr: 424226004 \|Using device\|
Observation.device.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.device.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.device.reference
Definition	A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.
Cardinality	0...0
Type	string
Summary	True
Comments	Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Observation.device.type
Definition	The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).
Cardinality	1...1
Type	uri
Binding	Aa resource (or, for logical models, the URI of the logical model). ResourceType (extensible)
Summary	True
Comments	This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	Device
Mappings	rim: n/a rim: N/A
Observation.device.identifier
Definition	An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.
Cardinality	0...1
Type	Identifier
Summary	True
Comments	When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation\|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any). This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ident-1: Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason `value.exists()`
Mappings	rim: n/a v2: CX / EI (occasionally, more often EI maps to a resource id or a URL) rim: II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT] servd: Identifier rim: .identifier
Observation.device.identifier.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.device.identifier.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.device.identifier.use
Definition	The purpose of this identifier.
Cardinality	0...0
Type	code
Binding	Identifies the purpose for this identifier, if known . IdentifierUse (required)
Modifier	True
Summary	True
Requirements	Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.
Comments	Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: N/A rim: Role.code or implied by context
Observation.device.identifier.type
Definition	A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.
Cardinality	0...0
Type	CodeableConcept
Binding	A coded type for an identifier that can be used to determine which identifier to use for a specific purpose. IdentifierTypeCodes (extensible)
Summary	True
Requirements	Allows users to make use of identifiers when the identifier system is not known.
Comments	This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD v2: CX.5 rim: Role.code or implied by context
Observation.device.identifier.system
Definition	Establishes the namespace for the value - that is, an absolute URL that describes a set values that are unique.
Cardinality	1...1
Type	uri
Summary	True
Requirements	There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.
Comments	Identifier.system is always case sensitive.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	http://fhir.synapxe.sg/NamingSystem/device-guid
Mappings	rim: n/a v2: CX.4 / EI-2-4 rim: II.root or Role.id.root servd: ./IdentifierType
Observation.device.identifier.value
Definition	The portion of the identifier typically relevant to the user and which is unique within the context of the system.
Cardinality	1...1
Type	string
Summary	True
Comments	If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the http://hl7.org/fhir/StructureDefinition/rendered-value). Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Examples	General 123456
Mappings	rim: n/a v2: CX.1 / EI.1 rim: II.extension or II.root if system indicates OID or GUID (Or Role.id.extension or root) servd: ./Value
Observation.device.identifier.period
Definition	Time period during which identifier is/was valid for use.
Cardinality	0...0
Type	Period
Summary	True
Comments	A Period specifies a range of time; the context of use will specify whether the entire range applies (e.g. "the patient was an inpatient of the hospital for this time range") or one value from the range applies (e.g. "give to the patient between these two times"). Period is not used for a duration (a measure of elapsed time). See Duration.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` per-1: If present, start SHALL have a lower or equal value than end `start.hasValue().not() or end.hasValue().not() or (start.lowBoundary() <= end.highBoundary())`
Mappings	rim: n/a v2: DR rim: IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"] v2: CX.7 + CX.8 rim: Role.effectiveTime or implied by context servd: ./StartDate and ./EndDate
Observation.device.identifier.assigner
Definition	Organization that issued/manages the identifier.
Cardinality	0...0
Type	Reference(Organization)
Summary	True
Comments	The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) v2: CX.4 / (CX.4,CX.9,CX.10) rim: II.assigningAuthorityName but note that this is an improper use by the definition of the field. Also Role.scoper servd: ./IdentifierIssuingAuthority
Observation.device.display
Definition	Plain text narrative that identifies the resource in addition to the resource reference.
Cardinality	0...0
Type	string
Summary	True
Comments	This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a rim: N/A
Observation.referenceRange
Definition	Guidance on how to interpret the value by comparison to a normal or recommended range. Multiple reference ranges are interpreted as an "OR". In other words, to represent two distinct target populations, two `referenceRange` elements would be used.
Cardinality	0...0
Type	BackboneElement
Requirements	Knowing what values are considered "normal" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts.
Comments	Most observations only have one generic reference range. Systems MAY choose to restrict to only supplying the relevant reference range based on knowledge about the patient (e.g., specific to the patient's age, gender, weight and other factors), but this might not be possible or appropriate. Whenever more than one reference range is supplied, the differences between them SHOULD be provided in the reference range and/or age properties.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` obs-3: Must have at least a low or a high or text `low.exists() or high.exists() or text.exists()`
Mappings	rim: n/a v2: OBX-7 rim: outboundRelationship[typeCode=REFV]/target[classCode=OBS, moodCode=EVN]
Observation.referenceRange.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.referenceRange.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.referenceRange.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content, modifiers
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.referenceRange.low
Definition	The value of the low bound of the reference range. The low bound of the reference range endpoint is inclusive of the value (e.g. reference range is >=5 - <=9). If the low bound is omitted, it is assumed to be meaningless (e.g. reference range is <=2.3).
Cardinality	0...1
Type	SimpleQuantity
Comments	The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` qty-3: If a code for the unit is present, the system SHALL also be present `code.empty() or system.exists()` sqty-1: The comparator is not used on a SimpleQuantity `comparator.empty()`
Mappings	rim: n/a v2: SN (see also Range) or CQ rim: PQ, IVL<PQ>, MO, CO, depending on the values v2: OBX-7 rim: value:IVL_PQ.low
Observation.referenceRange.high
Definition	The value of the high bound of the reference range. The high bound of the reference range endpoint is inclusive of the value (e.g. reference range is >=5 - <=9). If the high bound is omitted, it is assumed to be meaningless (e.g. reference range is >= 2.3).
Cardinality	0...1
Type	SimpleQuantity
Comments	The context of use may frequently define what kind of quantity this is and therefore what kind of units can be used. The context of use may also restrict the values for the comparator.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` qty-3: If a code for the unit is present, the system SHALL also be present `code.empty() or system.exists()` sqty-1: The comparator is not used on a SimpleQuantity `comparator.empty()`
Mappings	rim: n/a v2: SN (see also Range) or CQ rim: PQ, IVL<PQ>, MO, CO, depending on the values v2: OBX-7 rim: value:IVL_PQ.high
Observation.referenceRange.normalValue
Definition	The value of the normal value of the reference range.
Cardinality	0...1
Type	CodeableConcept
Binding	Codes identifying the normal value of the observation. ObservationReferenceRangeNormalValueCodes (extensible)
Comments	Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD v2: OBX-7 rim: value:IVL_PQ.normal
Observation.referenceRange.type
Definition	Codes to indicate the what part of the targeted reference population it applies to. For example, the normal or therapeutic range.
Cardinality	0...1
Type	CodeableConcept
Binding	Code for the meaning of a reference range. ObservationReferenceRangeMeaningCodes (preferred)
Requirements	Need to be able to say what kind of reference range this is - normal, recommended, therapeutic, etc., - for proper interpretation.
Comments	This SHOULD be populated if there is more than one range. If this element is not present then the normal range is assumed.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD sct-concept: < 260245000 \|Findings values\| OR < 365860008 \|General clinical state finding\| OR < 250171008 \|Clinical history or observation findings\| OR < 415229000 \|Racial group\| OR < 365400002 \|Finding of puberty stage\| OR < 443938003 \|Procedure carried out on subject\| v2: OBX-10 rim: interpretationCode
Observation.referenceRange.appliesTo
Definition	Codes to indicate the target population this reference range applies to. For example, a reference range may be based on the normal population or a particular sex or race. Multiple `appliesTo` are interpreted as an "AND" of the target populations. For example, to represent a target population of African American females, both a code of female and a code for African American would be used.
Cardinality	0...*
Type	CodeableConcept
Binding	Codes identifying the population the reference range applies to. ObservationReferenceRangeAppliesToCodes (example)
Requirements	Need to be able to identify the target population for proper interpretation.
Comments	This SHOULD be populated if there is more than one range. If this element is not present then the normal population is assumed.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD sct-concept: < 260245000 \|Findings values\| OR < 365860008 \|General clinical state finding\| OR < 250171008 \|Clinical history or observation findings\| OR < 415229000 \|Racial group\| OR < 365400002 \|Finding of puberty stage\| OR < 443938003 \|Procedure carried out on subject\| v2: OBX-10 rim: interpretationCode
Observation.referenceRange.age
Definition	The age at which this reference range is applicable. This is a neonatal age (e.g. number of weeks at term) if the meaning says so.
Cardinality	0...1
Type	Range
Requirements	Some analytes vary greatly over age.
Comments	The stated low and high value are assumed to have arbitrarily high precision when it comes to determining which values are in the range. I.e. 1.99 is not in the range 2 -> 3.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` rng-2: If present, low SHALL have a lower value than high `low.value.empty() or high.value.empty() or low.lowBoundary().comparable(high.highBoundary()).not() or (low.lowBoundary() <= high.highBoundary())`
Mappings	rim: n/a v2: NR and also possibly SN (but see also quantity) rim: IVL<QTY[not(type="TS")]> [lowClosed="true" and highClosed="true"]or URG<QTY[not(type="TS")]> rim: outboundRelationship[typeCode=PRCN].targetObservationCriterion[code="age"].value
Observation.referenceRange.text
Definition	Text based reference range in an observation which may be used when a quantitative range is not appropriate for an observation. An example would be a reference value of "Negative" or a list or table of "normals".
Cardinality	0...1
Type	markdown
Comments	Systems are not required to have markdown support, so the text should be readable without markdown processing. The markdown syntax is GFM - see https://github.github.com/gfm/
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: OBX-7 rim: value:ST
Observation.hasMember
Definition	This observation is a group observation (e.g. a battery, a panel of tests, a set of vital sign measurements) that includes the target as a member of the group.
Cardinality	0...0
Type	Reference(Observation \| QuestionnaireResponse \| MolecularSequence)
Summary	True
Comments	When using this element, an observation will typically have either a value or a set of related resources, although both may be present in some cases. For a discussion on the ways Observations can assembled in groups together, see Notes below. Note that a system may calculate results from QuestionnaireResponse into a final score and represent the score as an Observation.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) v2: Relationships established by OBX-4 usage rim: outBoundRelationship
Observation.derivedFrom
Definition	The target resource that represents a measurement from which this observation value is derived. For example, a calculated anion gap or a fetal measurement based on an ultrasound image.
Cardinality	0...0
Type	Reference(DocumentReference \| ImagingStudy \| ImagingSelection \| QuestionnaireResponse \| Observation \| MolecularSequence \| GenomicStudy)
Summary	True
Comments	All the reference choices that are listed in this element can represent clinical observations and other measurements that may be the source for a derived value. The most common reference will be another Observation. For a discussion on the ways Observations can assembled in groups together, see Notes below.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ref-1: SHALL have a contained resource if a local reference is provided `reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))` ref-2: At least one of reference, identifier and display SHALL be present (unless an extension is provided). `reference.exists() or identifier.exists() or display.exists() or extension.exists()`
Mappings	rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) v2: Relationships established by OBX-4 usage rim: .targetObservation
Observation.component
Definition	Some observations have multiple component observations. These component observations are expressed as separate code value pairs that share the same attributes. Examples include systolic and diastolic component observations for blood pressure measurement and multiple component observations for genetics observations.
Cardinality	0...*
Type	BackboneElement
Summary	True
Requirements	Component observations share the same attributes in the Observation resource as the primary observation and are always treated a part of a single observation (they are not separable). However, the reference range for the primary observation value is not inherited by the component values and is required when appropriate for each component observation.
Comments	For a discussion on the ways Observations can be assembled in groups together see Notes below.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: containment by OBX-4? rim: outBoundRelationship[typeCode=COMP]
Observation.component.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.component.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.component.modifierExtension
Definition	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Cardinality	0...*
Type	Extension
Modifier	True
Summary	True
Alias	extensions, user content, modifiers
Requirements	Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.component.code
Definition	Describes what was observed. Sometimes this is called the observation "code".
Cardinality	1...1
Type	CodeableConcept
Binding	Codes identifying names of simple observations. LOINCCodes (example)
Summary	True
Requirements	Knowing what kind of observation is being made is essential to understanding the observation.
Comments	All code-value and component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Pattern	{ "coding": [ { "system": "http://loinc.org" } ] }
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD w5: FiveWs.what[x] sct-concept: < 363787002 \|Observable entity\| OR < 386053000 \|Evaluation procedure\| v2: OBX-3 rim: code
Observation.component.code.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.component.code.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.component.code.coding
Definition	A reference to a code defined by a terminology system.
Cardinality	1...1
Type	Coding
Summary	True
Requirements	Allows for alternative encodings within a code system, and translations to other code systems.
Comments	Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` cod-1: A Coding SHOULD NOT have a display unless a code is also present. Computation on Coding.display alone is generally unsafe. Consider using CodeableConcept.text `code.exists().not() implies display.exists().not()`
Pattern	{ "system": "http://loinc.org" }
Mappings	rim: n/a v2: CE/CNE/CWE subset one of the sets of component 1-3 or 4-6 rim: CV orim: fhir:Coding rdfs:subClassOf dt:CDCoding v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
Observation.component.code.coding.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.component.code.coding.extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.component.code.coding.system
Definition	The identification of the code system that defines the meaning of the symbol in the code.
Cardinality	1...1
Type	uri
Summary	True
Requirements	Need to be unambiguous about the source of the definition of the symbol.
Comments	The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	http://loinc.org
Mappings	rim: n/a v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
Observation.component.code.coding.version
Definition	The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged.
Cardinality	0...0
Type	string
Summary	True
Comments	Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
Observation.component.code.coding.code
Definition	A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).
Cardinality	1...1
Type	code
Summary	True
Requirements	Need to refer to a particular code in the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
Observation.component.code.coding.display
Definition	A representation of the meaning of the code in the system, following the rules of the system.
Cardinality	1...1
Type	string
Summary	True
Requirements	Need to be able to carry a human-readable meaning of the code for readers that do not know the system.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
Observation.component.code.coding.userSelected
Definition	Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays).
Cardinality	0...0
Type	boolean
Summary	True
Requirements	This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.
Comments	Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
Observation.component.code.text
Definition	A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.
Cardinality	0...0
Type	string
Summary	True
Requirements	The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.
Comments	Very often the text is the same as a displayName of one of the codings.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
Observation.component.value[x]
Definition	The information determined as a result of making the observation, if the information has a simple value.
Cardinality	1...1
Type	Quantity
Summary	True
Requirements	An observation exists to have a value, though it might not if it is in error, or if it represents a group of observations.
Comments	Used when observation has a set of component observations: An observation may have both a value (e.g. an Apgar score) and component observations (the observations from which the Apgar score was derived). If a value is present, the datatype for this element should be determined by the `code`. CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the `code` defines a coded value. Attachment is used if the observation result value is a binary file such as an image. If the observation result value is derived from the binary file (for example 'X' detected and here is the the proof in this image), the binary file may be directly represented using DocumentReference and referenced by `derivedFrom`. If a value is present, the datatype for this element should be determined by the `code`. CodeableConcept with just a text would be used instead of a string if the field was usually coded, or if the type associated with the `code` defines a coded value. Attachment is used if the observation result value is a binary file such as an image. If the observation result value is derived from the binary file (for example 'X' detected and here is the the proof in this image), the binary file may be directly represented using DocumentReference and referenced by `derivedFrom`. The usage of valueReference is restricted to the MolecularSequence resource when used as a definitional resource, not as a patient-specific finding. . For additional guidance, see the Notes section below.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a sct-concept: 363714003 \|Interprets\| < 441742003 \|Evaluation finding\| v2: OBX-2, OBX-5, OBX-6 rim: value sct-attr: 363714003 \|Interprets\|
Observation.component.value[x].id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Cardinality	0...1
Type	string
Mappings	rim: n/a
Observation.component.value[x].extension
Definition	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Cardinality	0...*
Type	Extension
Alias	extensions, user content
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Slicing	Unordered, Open, by url(Value)
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()`
Mappings	rim: n/a rim: N/A
Observation.component.value[x].value
Definition	The value of the measured amount. The value includes an implicit precision in the presentation of the value.
Cardinality	1...1
Type	decimal
Summary	True
Requirements	Precision is handled implicitly in almost all cases of measurement.
Comments	The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books).
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: SN.2 / CQ - N/A rim: PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value
Observation.component.value[x].comparator
Definition	How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value.
Cardinality	0...0
Type	code
Binding	How the Quantity should be understood and represented. QuantityComparator (required)
Modifier	True
Summary	True
Requirements	Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: SN.1 / CQ.1 rim: IVL properties
Observation.component.value[x].unit
Definition	A human-readable form of the unit.
Cardinality	1...1
Type	string
Summary	True
Requirements	There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.
Comments	Note that FHIR strings SHALL NOT exceed 1,048,576 (1024*1024) characters in size
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.unit
Observation.component.value[x].system
Definition	The identification of the system that provides the coded form of the unit.
Cardinality	1...1
Type	uri
Summary	True
Requirements	Need to know the system that defines the coded form of the unit.
Comments	see http://en.wikipedia.org/wiki/Uniform_resource_identifier
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Fixed Value	http://unitsofmeasure.org
Mappings	rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: CO.codeSystem, PQ.translation.codeSystem
Observation.component.value[x].code
Definition	A computer processable form of the unit in some unit representation system.
Cardinality	1...1
Type	code
Summary	True
Requirements	Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest.
Comments	The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: (see OBX.6 etc.) / CQ.2 rim: PQ.code, MO.currency, PQ.translation.code
Observation.component.dataAbsentReason
Definition	Provides a reason why the expected value in the element Observation.component.value[x] is missing.
Cardinality	0...0
Type	CodeableConcept
Binding	Codes specifying why the result (`Observation.value[x]`) is missing. DataAbsentReason (extensible)
Requirements	For many results it is necessary to handle exceptional values in measurements.
Comments	"Null" or exceptional values can be represented two ways in FHIR Observations. One way is to simply include them in the value set and represent the exceptions in the value. For example, measurement values for a serology test could be "detected", "not detected", "inconclusive", or "test not done". The alternate way is to use the value element for actual observations and use the explicit dataAbsentReason element to record exceptional values. For example, the dataAbsentReason code "error" could be used when the measurement was not completed. Because of these options, use-case agreements are required to interpret general observations for exceptional values.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD v2: N/A rim: value.nullFlavor
Observation.component.interpretation
Definition	A categorical assessment of an observation value. For example, high, low, normal.
Cardinality	0...0
Type	CodeableConcept
Binding	Codes identifying interpretations of observations. ObservationInterpretationCodes (extensible)
Alias	Abnormal Flag
Requirements	For some results, particularly numeric results, an interpretation is necessary to fully understand the significance of a result.
Comments	Historically used for laboratory results (known as 'abnormal flag' ), its use extends to other use cases where coded interpretations are relevant. Often reported as one or more simple compact codes this element is often placed adjacent to the result value in reports and flow sheets to signal the meaning/normalcy status of the result.
Invariants	ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
Mappings	rim: n/a v2: CE/CNE/CWE rim: CD orim: fhir:CodeableConcept rdfs:subClassOf dt:CD sct-concept: < 260245000 \|Findings values\| v2: OBX-8 rim: interpretationCode sct-attr: 363713009 \|Has interpretation\|
Observation.component.referenceRange
Definition	Guidance on how to interpret the value by comparison to a normal or recommended range.
Cardinality	0...0
Type	see (referenceRange)
Requirements	Knowing what values are considered "normal" can help evaluate the significance of a particular result. Need to be able to provide multiple reference ranges for different contexts.
Comments	Most observations only have one generic reference range. Systems MAY choose to restrict to only supplying the relevant reference range based on knowledge about the patient (e.g., specific to the patient's age, gender, weight and other factors), but this might not be possible or appropriate. Whenever more than one reference range is supplied, the differences between them SHOULD be provided in the reference range and/or age properties.
Mappings	v2: OBX-7 rim: outboundRelationship[typeCode=REFV]/target[classCode=OBS, moodCode=EVN]

<StructureDefinition xmlns="http://hl7.org/fhir">
    <url value="http://fhir.synapxe.sg/StructureDefinition/profile-observation" />
    <name value="Observation" />
    <status value="draft" />
    <description value="This resource defines the vital signs readings of the patient. Details like the type of vital signs (i.e blood pressure), the readings for each vital sign (i.e systolic blood pressure, diastolic blood pressure), the device guid that took the readings and the subject patient id.\n\nIn the event the readings are missed, the effective period will be used to store the start and end date of the missed readings with the data absent reason as &quot;unknown&quot;." />
    <fhirVersion value="5.0.0" />
    <kind value="resource" />
    <abstract value="false" />
    <type value="Observation" />
    <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" />
    <derivation value="constraint" />
    <differential>
        <element id="Observation.identifier">
            <path value="Observation.identifier" />
            <max value="0" />
        </element>
        <element id="Observation.instantiates[x]">
            <path value="Observation.instantiates[x]" />
            <max value="0" />
        </element>
        <element id="Observation.basedOn">
            <path value="Observation.basedOn" />
            <max value="0" />
        </element>
        <element id="Observation.triggeredBy">
            <path value="Observation.triggeredBy" />
            <max value="0" />
        </element>
        <element id="Observation.partOf">
            <path value="Observation.partOf" />
            <max value="0" />
        </element>
        <element id="Observation.status">
            <path value="Observation.status" />
            <short value="final" />
            <fixedCode value="final" />
        </element>
        <element id="Observation.category">
            <path value="Observation.category" />
            <min value="1" />
            <max value="1" />
        </element>
        <element id="Observation.category.coding">
            <path value="Observation.category.coding" />
            <min value="1" />
            <max value="1" />
        </element>
        <element id="Observation.category.coding.system">
            <path value="Observation.category.coding.system" />
            <min value="1" />
            <fixedUri value="http://terminology.hl7.org/CodeSystem/observation-category" />
        </element>
        <element id="Observation.category.coding.version">
            <path value="Observation.category.coding.version" />
            <max value="0" />
        </element>
        <element id="Observation.category.coding.code">
            <path value="Observation.category.coding.code" />
            <min value="1" />
            <fixedCode value="vital-signs" />
        </element>
        <element id="Observation.category.coding.display">
            <path value="Observation.category.coding.display" />
            <min value="1" />
            <fixedString value="Vital Signs" />
        </element>
        <element id="Observation.category.coding.userSelected">
            <path value="Observation.category.coding.userSelected" />
            <max value="0" />
        </element>
        <element id="Observation.category.text">
            <path value="Observation.category.text" />
            <max value="0" />
        </element>
        <element id="Observation.code.coding">
            <path value="Observation.code.coding" />
            <min value="1" />
            <max value="1" />
        </element>
        <element id="Observation.code.coding.system">
            <path value="Observation.code.coding.system" />
            <min value="1" />
            <fixedUri value="http://loinc.org" />
        </element>
        <element id="Observation.code.coding.version">
            <path value="Observation.code.coding.version" />
            <max value="0" />
        </element>
        <element id="Observation.code.coding.code">
            <path value="Observation.code.coding.code" />
            <min value="1" />
        </element>
        <element id="Observation.code.coding.display">
            <path value="Observation.code.coding.display" />
            <min value="1" />
        </element>
        <element id="Observation.code.coding.userSelected">
            <path value="Observation.code.coding.userSelected" />
            <max value="0" />
        </element>
        <element id="Observation.code.text">
            <path value="Observation.code.text" />
            <max value="0" />
        </element>
        <element id="Observation.subject">
            <path value="Observation.subject" />
            <min value="1" />
            <type>
                <code value="Reference" />
                <targetProfile value="http://fhir.synapxe.sg/StructureDefinition/profile-patient" />
            </type>
        </element>
        <element id="Observation.subject.reference">
            <path value="Observation.subject.reference" />
            <min value="1" />
        </element>
        <element id="Observation.subject.type">
            <path value="Observation.subject.type" />
            <max value="0" />
        </element>
        <element id="Observation.subject.identifier">
            <path value="Observation.subject.identifier" />
            <max value="0" />
        </element>
        <element id="Observation.subject.display">
            <path value="Observation.subject.display" />
            <max value="0" />
        </element>
        <element id="Observation.focus">
            <path value="Observation.focus" />
            <max value="0" />
        </element>
        <element id="Observation.encounter">
            <path value="Observation.encounter" />
            <max value="0" />
        </element>
        <element id="Observation.effective[x]">
            <path value="Observation.effective[x]" />
            <type>
                <code value="Period" />
            </type>
        </element>
        <element id="Observation.issued">
            <path value="Observation.issued" />
            <min value="1" />
        </element>
        <element id="Observation.performer">
            <path value="Observation.performer" />
            <max value="0" />
        </element>
        <element id="Observation.value[x]">
            <path value="Observation.value[x]" />
            <max value="0" />
        </element>
        <element id="Observation.dataAbsentReason.coding">
            <path value="Observation.dataAbsentReason.coding" />
            <min value="1" />
            <max value="1" />
        </element>
        <element id="Observation.dataAbsentReason.coding.system">
            <path value="Observation.dataAbsentReason.coding.system" />
            <max value="0" />
        </element>
        <element id="Observation.dataAbsentReason.coding.version">
            <path value="Observation.dataAbsentReason.coding.version" />
            <max value="0" />
        </element>
        <element id="Observation.dataAbsentReason.coding.code">
            <path value="Observation.dataAbsentReason.coding.code" />
            <min value="1" />
            <fixedCode value="unknown" />
        </element>
        <element id="Observation.dataAbsentReason.coding.display">
            <path value="Observation.dataAbsentReason.coding.display" />
            <max value="0" />
        </element>
        <element id="Observation.dataAbsentReason.coding.userSelected">
            <path value="Observation.dataAbsentReason.coding.userSelected" />
            <max value="0" />
        </element>
        <element id="Observation.dataAbsentReason.text">
            <path value="Observation.dataAbsentReason.text" />
            <max value="0" />
        </element>
        <element id="Observation.interpretation">
            <path value="Observation.interpretation" />
            <max value="0" />
        </element>
        <element id="Observation.note">
            <path value="Observation.note" />
            <max value="0" />
        </element>
        <element id="Observation.bodySite">
            <path value="Observation.bodySite" />
            <max value="0" />
        </element>
        <element id="Observation.bodyStructure">
            <path value="Observation.bodyStructure" />
            <max value="0" />
        </element>
        <element id="Observation.method">
            <path value="Observation.method" />
            <max value="0" />
        </element>
        <element id="Observation.specimen">
            <path value="Observation.specimen" />
            <max value="0" />
        </element>
        <element id="Observation.device">
            <path value="Observation.device" />
            <type>
                <code value="Reference" />
                <targetProfile value="http://hl7.org/fhir/StructureDefinition/Device" />
            </type>
        </element>
        <element id="Observation.device.reference">
            <path value="Observation.device.reference" />
            <max value="0" />
        </element>
        <element id="Observation.device.type">
            <path value="Observation.device.type" />
            <min value="1" />
            <fixedUri value="Device" />
        </element>
        <element id="Observation.device.identifier.use">
            <path value="Observation.device.identifier.use" />
            <max value="0" />
        </element>
        <element id="Observation.device.identifier.type">
            <path value="Observation.device.identifier.type" />
            <max value="0" />
        </element>
        <element id="Observation.device.identifier.system">
            <path value="Observation.device.identifier.system" />
            <min value="1" />
            <fixedUri value="http://fhir.synapxe.sg/NamingSystem/device-guid" />
        </element>
        <element id="Observation.device.identifier.value">
            <path value="Observation.device.identifier.value" />
            <min value="1" />
        </element>
        <element id="Observation.device.identifier.period">
            <path value="Observation.device.identifier.period" />
            <max value="0" />
        </element>
        <element id="Observation.device.identifier.assigner">
            <path value="Observation.device.identifier.assigner" />
            <max value="0" />
        </element>
        <element id="Observation.device.display">
            <path value="Observation.device.display" />
            <max value="0" />
        </element>
        <element id="Observation.referenceRange">
            <path value="Observation.referenceRange" />
            <max value="0" />
        </element>
        <element id="Observation.hasMember">
            <path value="Observation.hasMember" />
            <max value="0" />
        </element>
        <element id="Observation.derivedFrom">
            <path value="Observation.derivedFrom" />
            <max value="0" />
        </element>
        <element id="Observation.component.code">
            <path value="Observation.component.code" />
            <patternCodeableConcept>
                <coding>
                    <system value="http://loinc.org" />
                </coding>
            </patternCodeableConcept>
        </element>
        <element id="Observation.component.code.coding">
            <path value="Observation.component.code.coding" />
            <min value="1" />
            <max value="1" />
        </element>
        <element id="Observation.component.code.coding.system">
            <path value="Observation.component.code.coding.system" />
            <min value="1" />
            <fixedUri value="http://loinc.org" />
        </element>
        <element id="Observation.component.code.coding.version">
            <path value="Observation.component.code.coding.version" />
            <max value="0" />
        </element>
        <element id="Observation.component.code.coding.code">
            <path value="Observation.component.code.coding.code" />
            <min value="1" />
        </element>
        <element id="Observation.component.code.coding.display">
            <path value="Observation.component.code.coding.display" />
            <min value="1" />
        </element>
        <element id="Observation.component.code.coding.userSelected">
            <path value="Observation.component.code.coding.userSelected" />
            <max value="0" />
        </element>
        <element id="Observation.component.code.text">
            <path value="Observation.component.code.text" />
            <max value="0" />
        </element>
        <element id="Observation.component.value[x]">
            <path value="Observation.component.value[x]" />
            <min value="1" />
            <type>
                <code value="Quantity" />
            </type>
        </element>
        <element id="Observation.component.value[x].value">
            <path value="Observation.component.value[x].value" />
            <min value="1" />
        </element>
        <element id="Observation.component.value[x].comparator">
            <path value="Observation.component.value[x].comparator" />
            <max value="0" />
        </element>
        <element id="Observation.component.value[x].unit">
            <path value="Observation.component.value[x].unit" />
            <min value="1" />
        </element>
        <element id="Observation.component.value[x].system">
            <path value="Observation.component.value[x].system" />
            <min value="1" />
            <fixedUri value="http://unitsofmeasure.org" />
        </element>
        <element id="Observation.component.value[x].code">
            <path value="Observation.component.value[x].code" />
            <min value="1" />
        </element>
        <element id="Observation.component.dataAbsentReason">
            <path value="Observation.component.dataAbsentReason" />
            <max value="0" />
        </element>
        <element id="Observation.component.interpretation">
            <path value="Observation.component.interpretation" />
            <max value="0" />
        </element>
        <element id="Observation.component.referenceRange">
            <path value="Observation.component.referenceRange" />
            <max value="0" />
        </element>
    </differential>
</StructureDefinition>

{
    "resourceType": "StructureDefinition",
    "url": "http://fhir.synapxe.sg/StructureDefinition/profile-observation",
    "name": "Observation",
    "status": "draft",
    "description": "This resource defines the vital signs readings of the patient. Details like the type of vital signs (i.e blood pressure), the readings for each vital sign (i.e systolic blood pressure, diastolic blood pressure), the device guid that took the readings and the subject patient id.\n\nIn the event the readings are missed, the effective period will be used to store the start and end date of the missed readings with the data absent reason as \"unknown\".",
    "fhirVersion": "5.0.0",
    "kind": "resource",
    "abstract": false,
    "type": "Observation",
    "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Observation",
    "derivation": "constraint",
    "differential": {
        "element":  [
            {
                "id": "Observation.identifier",
                "path": "Observation.identifier",
                "max": "0"
            },
            {
                "id": "Observation.instantiates[x]",
                "path": "Observation.instantiates[x]",
                "max": "0"
            },
            {
                "id": "Observation.basedOn",
                "path": "Observation.basedOn",
                "max": "0"
            },
            {
                "id": "Observation.triggeredBy",
                "path": "Observation.triggeredBy",
                "max": "0"
            },
            {
                "id": "Observation.partOf",
                "path": "Observation.partOf",
                "max": "0"
            },
            {
                "id": "Observation.status",
                "path": "Observation.status",
                "short": "final",
                "fixedCode": "final"
            },
            {
                "id": "Observation.category",
                "path": "Observation.category",
                "min": 1,
                "max": "1"
            },
            {
                "id": "Observation.category.coding",
                "path": "Observation.category.coding",
                "min": 1,
                "max": "1"
            },
            {
                "id": "Observation.category.coding.system",
                "path": "Observation.category.coding.system",
                "min": 1,
                "fixedUri": "http://terminology.hl7.org/CodeSystem/observation-category"
            },
            {
                "id": "Observation.category.coding.version",
                "path": "Observation.category.coding.version",
                "max": "0"
            },
            {
                "id": "Observation.category.coding.code",
                "path": "Observation.category.coding.code",
                "min": 1,
                "fixedCode": "vital-signs"
            },
            {
                "id": "Observation.category.coding.display",
                "path": "Observation.category.coding.display",
                "min": 1,
                "fixedString": "Vital Signs"
            },
            {
                "id": "Observation.category.coding.userSelected",
                "path": "Observation.category.coding.userSelected",
                "max": "0"
            },
            {
                "id": "Observation.category.text",
                "path": "Observation.category.text",
                "max": "0"
            },
            {
                "id": "Observation.code.coding",
                "path": "Observation.code.coding",
                "min": 1,
                "max": "1"
            },
            {
                "id": "Observation.code.coding.system",
                "path": "Observation.code.coding.system",
                "min": 1,
                "fixedUri": "http://loinc.org"
            },
            {
                "id": "Observation.code.coding.version",
                "path": "Observation.code.coding.version",
                "max": "0"
            },
            {
                "id": "Observation.code.coding.code",
                "path": "Observation.code.coding.code",
                "min": 1
            },
            {
                "id": "Observation.code.coding.display",
                "path": "Observation.code.coding.display",
                "min": 1
            },
            {
                "id": "Observation.code.coding.userSelected",
                "path": "Observation.code.coding.userSelected",
                "max": "0"
            },
            {
                "id": "Observation.code.text",
                "path": "Observation.code.text",
                "max": "0"
            },
            {
                "id": "Observation.subject",
                "path": "Observation.subject",
                "min": 1,
                "type":  [
                    {
                        "code": "Reference",
                        "targetProfile":  [
                            "http://fhir.synapxe.sg/StructureDefinition/profile-patient"
                        ]
                    }
                ]
            },
            {
                "id": "Observation.subject.reference",
                "path": "Observation.subject.reference",
                "min": 1
            },
            {
                "id": "Observation.subject.type",
                "path": "Observation.subject.type",
                "max": "0"
            },
            {
                "id": "Observation.subject.identifier",
                "path": "Observation.subject.identifier",
                "max": "0"
            },
            {
                "id": "Observation.subject.display",
                "path": "Observation.subject.display",
                "max": "0"
            },
            {
                "id": "Observation.focus",
                "path": "Observation.focus",
                "max": "0"
            },
            {
                "id": "Observation.encounter",
                "path": "Observation.encounter",
                "max": "0"
            },
            {
                "id": "Observation.effective[x]",
                "path": "Observation.effective[x]",
                "type":  [
                    {
                        "code": "Period"
                    }
                ]
            },
            {
                "id": "Observation.issued",
                "path": "Observation.issued",
                "min": 1
            },
            {
                "id": "Observation.performer",
                "path": "Observation.performer",
                "max": "0"
            },
            {
                "id": "Observation.value[x]",
                "path": "Observation.value[x]",
                "max": "0"
            },
            {
                "id": "Observation.dataAbsentReason.coding",
                "path": "Observation.dataAbsentReason.coding",
                "min": 1,
                "max": "1"
            },
            {
                "id": "Observation.dataAbsentReason.coding.system",
                "path": "Observation.dataAbsentReason.coding.system",
                "max": "0"
            },
            {
                "id": "Observation.dataAbsentReason.coding.version",
                "path": "Observation.dataAbsentReason.coding.version",
                "max": "0"
            },
            {
                "id": "Observation.dataAbsentReason.coding.code",
                "path": "Observation.dataAbsentReason.coding.code",
                "min": 1,
                "fixedCode": "unknown"
            },
            {
                "id": "Observation.dataAbsentReason.coding.display",
                "path": "Observation.dataAbsentReason.coding.display",
                "max": "0"
            },
            {
                "id": "Observation.dataAbsentReason.coding.userSelected",
                "path": "Observation.dataAbsentReason.coding.userSelected",
                "max": "0"
            },
            {
                "id": "Observation.dataAbsentReason.text",
                "path": "Observation.dataAbsentReason.text",
                "max": "0"
            },
            {
                "id": "Observation.interpretation",
                "path": "Observation.interpretation",
                "max": "0"
            },
            {
                "id": "Observation.note",
                "path": "Observation.note",
                "max": "0"
            },
            {
                "id": "Observation.bodySite",
                "path": "Observation.bodySite",
                "max": "0"
            },
            {
                "id": "Observation.bodyStructure",
                "path": "Observation.bodyStructure",
                "max": "0"
            },
            {
                "id": "Observation.method",
                "path": "Observation.method",
                "max": "0"
            },
            {
                "id": "Observation.specimen",
                "path": "Observation.specimen",
                "max": "0"
            },
            {
                "id": "Observation.device",
                "path": "Observation.device",
                "type":  [
                    {
                        "code": "Reference",
                        "targetProfile":  [
                            "http://hl7.org/fhir/StructureDefinition/Device"
                        ]
                    }
                ]
            },
            {
                "id": "Observation.device.reference",
                "path": "Observation.device.reference",
                "max": "0"
            },
            {
                "id": "Observation.device.type",
                "path": "Observation.device.type",
                "min": 1,
                "fixedUri": "Device"
            },
            {
                "id": "Observation.device.identifier.use",
                "path": "Observation.device.identifier.use",
                "max": "0"
            },
            {
                "id": "Observation.device.identifier.type",
                "path": "Observation.device.identifier.type",
                "max": "0"
            },
            {
                "id": "Observation.device.identifier.system",
                "path": "Observation.device.identifier.system",
                "min": 1,
                "fixedUri": "http://fhir.synapxe.sg/NamingSystem/device-guid"
            },
            {
                "id": "Observation.device.identifier.value",
                "path": "Observation.device.identifier.value",
                "min": 1
            },
            {
                "id": "Observation.device.identifier.period",
                "path": "Observation.device.identifier.period",
                "max": "0"
            },
            {
                "id": "Observation.device.identifier.assigner",
                "path": "Observation.device.identifier.assigner",
                "max": "0"
            },
            {
                "id": "Observation.device.display",
                "path": "Observation.device.display",
                "max": "0"
            },
            {
                "id": "Observation.referenceRange",
                "path": "Observation.referenceRange",
                "max": "0"
            },
            {
                "id": "Observation.hasMember",
                "path": "Observation.hasMember",
                "max": "0"
            },
            {
                "id": "Observation.derivedFrom",
                "path": "Observation.derivedFrom",
                "max": "0"
            },
            {
                "id": "Observation.component.code",
                "path": "Observation.component.code",
                "patternCodeableConcept": {
                    "coding":  [
                        {
                            "system": "http://loinc.org"
                        }
                    ]
                }
            },
            {
                "id": "Observation.component.code.coding",
                "path": "Observation.component.code.coding",
                "min": 1,
                "max": "1"
            },
            {
                "id": "Observation.component.code.coding.system",
                "path": "Observation.component.code.coding.system",
                "min": 1,
                "fixedUri": "http://loinc.org"
            },
            {
                "id": "Observation.component.code.coding.version",
                "path": "Observation.component.code.coding.version",
                "max": "0"
            },
            {
                "id": "Observation.component.code.coding.code",
                "path": "Observation.component.code.coding.code",
                "min": 1
            },
            {
                "id": "Observation.component.code.coding.display",
                "path": "Observation.component.code.coding.display",
                "min": 1
            },
            {
                "id": "Observation.component.code.coding.userSelected",
                "path": "Observation.component.code.coding.userSelected",
                "max": "0"
            },
            {
                "id": "Observation.component.code.text",
                "path": "Observation.component.code.text",
                "max": "0"
            },
            {
                "id": "Observation.component.value[x]",
                "path": "Observation.component.value[x]",
                "min": 1,
                "type":  [
                    {
                        "code": "Quantity"
                    }
                ]
            },
            {
                "id": "Observation.component.value[x].value",
                "path": "Observation.component.value[x].value",
                "min": 1
            },
            {
                "id": "Observation.component.value[x].comparator",
                "path": "Observation.component.value[x].comparator",
                "max": "0"
            },
            {
                "id": "Observation.component.value[x].unit",
                "path": "Observation.component.value[x].unit",
                "min": 1
            },
            {
                "id": "Observation.component.value[x].system",
                "path": "Observation.component.value[x].system",
                "min": 1,
                "fixedUri": "http://unitsofmeasure.org"
            },
            {
                "id": "Observation.component.value[x].code",
                "path": "Observation.component.value[x].code",
                "min": 1
            },
            {
                "id": "Observation.component.dataAbsentReason",
                "path": "Observation.component.dataAbsentReason",
                "max": "0"
            },
            {
                "id": "Observation.component.interpretation",
                "path": "Observation.component.interpretation",
                "max": "0"
            },
            {
                "id": "Observation.component.referenceRange",
                "path": "Observation.component.referenceRange",
                "max": "0"
            }
        ]
    }
}

Observation

Terminology Bindings

These are the terminology bindings within these resources:

Path	Binding Strength	Value Set(Code System)	Description
Bundle.type	Required	BundleType (HL7 FHIR)	Indicates the purpose of a bundle - how it is intended to be used.
Communication.status	Required	EventStatus (HL7 FHIR)	The status of the communication.
Communication.reason.concept	Required	RCM Communication Alert Codes	The communication alert codes used in RCM.
Observation.status	Required	ObservationStatus (HL7 FHIR)	Codes providing the status of an observation.
Observation.category	Required	ObservationCategory (HL7 FHIR)	Codes for high level observation categories.

Constraints

There are no constraints for these resources.