Pan-Canadian eReferral-eConsult (CA:eReC) iGuide v.1.0.2-DFT

DRAFT - The specification is currently in development and subject to significant change. It is not ready for limited roll-out or production level use.

Task (CA:eReC)

Structure Definition: Task Profile

Canonical URL:http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-Task

Simplifier project page: Task

Derived from: Task (R4)

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work

Task	I		Task	There are no (further) constraints on this element Element id Task Short description A task to be performed Definition A task to be performed. Data type Task 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().as(canonical) \| %resource.descendants().as(uri) \| %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(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()` inv-1: Last modified date must be greater than or equal to authored-on date. `lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn` Mappings rim: Entity. Role, or Act workflow: Request, Event rim: ControlAct[moodCode=INT]
id	Σ	0..1	string	There are no (further) constraints on this element Element id Task.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 The only time that a resource does not have an id is when it is being submitted to the server using a create operation. Data type string
meta	Σ	0..1	Meta	There are no (further) constraints on this element Element id Task.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 Task.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 it's 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 Task.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 A human language. CommonLanguages (preferred) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
text		0..1	Narrative	There are no (further) constraints on this element Element id Task.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 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		0..*	Resource	There are no (further) constraints on this element Element id Task.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, and nor can they have their own independent transaction scope. 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: Entity. Role, or Act rim: N/A
extension	I	0..*	Extension	Element id Task.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 manageable, 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
PatientNeedsToBeSeen	S I	0..1	Extension(boolean)	Element id Task.extension:PatientNeedsToBeSeen Short description Optional Extensions Element Alternate names extensions, user content Definition Following a consult, used to communicate if a patient needs to be seen in person. Comments Used to support the eConsult use case where a patient is referred to a care provider. Used for when the care provider responds with an eConsult rather than accept the referral, but the patient wants a referral anyway. Data type Extension(boolean) Extension URL http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-patient-needs-to-be-seen-EXT 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	?! I	0..*	Extension	There are no (further) constraints on this element Element id Task.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 manageable, 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		0..*	Identifier	There are no (further) constraints on this element Element id Task.identifier Short description Task Instance Identifier Definition The business identifier for this task. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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: Request.identifier, Event.identifier w5: FiveWs.identifier rim: .id
instantiatesCanonical	Σ	0..1	canonical(ActivityDefinition)	There are no (further) constraints on this element Element id Task.instantiatesCanonical Short description Formal definition of task 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 Task. Requirements Enables a formal definition of how he task is to be performed, enabling automation. Comments see Canonical References Data type canonical(ActivityDefinition) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Request.instantiatesCanonical, Event.instantiatesCanonical rim: .outboundRelationship[typeCode=DEFN].target
instantiatesUri	Σ	0..1	uri	There are no (further) constraints on this element Element id Task.instantiatesUri Short description Formal definition of task 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 Task. Requirements Enables a formal definition of how he task is to be performed (e.g. using BPMN, BPEL, XPDL or other formal notation to be associated with a task), enabling automation. 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())` Mappings rim: n/a workflow: Event.instantiatesUrl rim: .outboundRelationship[typeCode=DEFN].target
basedOn	S Σ I	1..1	Reference(ServiceRequest)	Element id Task.basedOn Short description Request fulfilled by this task Definition BasedOn refers to a higher-level authorization that triggered the creation of the task. It references a "request" resource such as a ServiceRequest, MedicationRequest, ServiceRequest, CarePlan, etc. which is distinct from the "request" resource the task is seeking to fulfill. This latter resource is referenced by FocusOn. For example, based on a ServiceRequest (= BasedOn), a task is created to fulfill a procedureRequest ( = FocusOn ) to collect a specimen from a patient. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(ServiceRequest) Allowed aggregation: referenced 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.basedOn, Event.basedOn rim: .outboundRelationship[typeCode=FLFS].target[moodCode=INT]
id		0..1	string	There are no (further) constraints on this element Element id Task.basedOn.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 Task.basedOn.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 manageable, 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	S Σ I	0..1	string	There are no (further) constraints on this element Element id Task.basedOn.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..1	uriBinding	There are no (further) constraints on this element Element id Task.basedOn.type Short description Type the reference refers to (e.g. "Patient") 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 RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified. 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	S Σ	0..1	Identifier	There are no (further) constraints on this element Element id Task.basedOn.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). Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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 Task.basedOn.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 Task.basedOn.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 manageable, 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..1	codeBinding	There are no (further) constraints on this element Element id Task.basedOn.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..1	CodeableConceptBinding	There are no (further) constraints on this element Element id Task.basedOn.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. Identifier Type Codes (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	S Σ	1..1	uri	There are no (further) constraints on this element Element id Task.basedOn.identifier.system Short description The namespace for the identifier value Definition Establishes the namespace for the value - that is, a 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())` Examples General http://www.acme.com/identifiers/patient Mappings rim: n/a v2: CX.4 / EI-2-4 rim: II.root or Role.id.root servd: ./IdentifierType
value	S Σ	1..1	string	There are no (further) constraints on this element Element id Task.basedOn.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 Rendered Value extension. 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..1	Period	There are no (further) constraints on this element Element id Task.basedOn.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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` 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..1	Reference(Organization)	There are no (further) constraints on this element Element id Task.basedOn.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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` 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	0..1	string	There are no (further) constraints on this element Element id Task.basedOn.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
groupIdentifier	Σ	0..1	Identifier	There are no (further) constraints on this element Element id Task.groupIdentifier Short description Requisition or grouper id Definition An identifier that links together multiple tasks and other requests that were created in the same context. Requirements Billing and/or reporting can be linked to whether multiple requests were created as a single unit. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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: Request.groupIdentifier rim: .inboundRelationship[typeCode=COMP].source[moodCode=INT].id
partOf	Σ I	0..*	Reference(Task)	There are no (further) constraints on this element Element id Task.partOf Short description Composite task Definition Task that this particular task is part of. Requirements Allows tasks to be broken down into sub-steps (and this division can occur independent of the original task). Comments This should usually be 0..1. Data type Reference(Task) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.partOf rim: .inboundRelationship[typeCode=COMP].source[moodCode=INT]
status	S Σ ?!	1..1	codeBinding	There are no (further) constraints on this element Element id Task.status Short description draft \| requested \| received \| accepted \| + Definition The current status of the task. Requirements These states enable coordination of task status with off-the-shelf workflow solutions that support automation of tasks. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Data type code Binding The current status of the task. TaskStatus (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Request.status, Event.status w5: FiveWs.status rim: .statusCode
statusReason	Σ	0..1	CodeableConcept	There are no (further) constraints on this element Element id Task.statusReason Short description Reason for current status Definition An explanation as to why this task is held, failed, was refused, etc. Comments This applies to the current status. Look at the history of the task to see reasons for past statuses. Data type CodeableConcept Binding Codes to identify the reason for current status. These will typically be specific to a particular workflow. (unbound) (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 rim: .inboundRelationship[typeCode=SUBJ].source[classCode=CACT, moodCode=EVN, code="status change"].reasonCode
businessStatus	S Σ	0..1	CodeableConceptBinding	Element id Task.businessStatus Short description E.g. "Specimen collected", "IV prepped" Definition Contains business-specific nuances of the business state. Requirements There's often a need to track substates of a task - this is often variable by specific workflow implementation. 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 domain-specific business-contextual sub-state of the task. For example: "Blood drawn", "IV inserted", "Awaiting physician signature", etc. TaskBusinessStatus (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 rim: .inboundRelationship[typeCode=SUBJ].source[classCode=OBS, moodCode=EVN, code="business status"]
id		0..1	string	There are no (further) constraints on this element Element id Task.businessStatus.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 Task.businessStatus.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 manageable, 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
StatusReason	S I	0..1	Extension(CodeableConcept)	Element id Task.businessStatus.extension:StatusReason Short description BusinessStatusReason Alternate names extensions, user content Definition A reason for why the business reason is as it is. 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(CodeableConcept) Extension URL http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-task-business-status-reason-EXT 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	0..*	Coding	There are no (further) constraints on this element Element id Task.businessStatus.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())` 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
text	Σ	0..1	string	There are no (further) constraints on this element Element id Task.businessStatus.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
intent	S Σ	1..1	codeBindingPattern	Element id Task.intent Short description unknown \| proposal \| plan \| order \| original-order \| reflex-order \| filler-order \| instance-order \| option Definition Indicates the "level" of actionability associated with the Task, i.e. i+R[9]Cs this a proposed task, a planned task, an actionable task, etc. Comments This element is immutable. Proposed tasks, planned tasks, etc. must be distinct instances. In most cases, Tasks will have an intent of "order". Data type code Binding Distinguishes whether the task is a proposal, plan or full order. TaskIntent (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern proposal Mappings rim: n/a workflow: Request.intent w5: FiveWs.class rim: .moodCode
priority		0..1	codeBinding	There are no (further) constraints on this element Element id Task.priority Short description routine \| urgent \| asap \| stat Definition Indicates how quickly the Task should be addressed with respect to other requests. Requirements Used to identify the service level expected while performing a task. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Meaning when missing If missing, this task should be performed with normal priority Data type code Binding The task's priority. RequestPriority (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Request.priority w5: FiveWs.grade rim: .priorityCode
code	S Σ	0..1	CodeableConceptBinding	Element id Task.code Short description Task Type Definition A name or code (or both) briefly describing what the task involves. Comments Data type CodeableConcept Binding Codes to identify what the task involves. These will typically be specific to a particular workflow. TaskCode (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 workflow: Request.code, Event.code w5: FiveWs.what[x] rim: .code
description	Σ	0..1	string	There are no (further) constraints on this element Element id Task.description Short description Human-readable explanation of task Definition A free-text description of what is to be performed. Comments Note that FHIR strings SHALL NOT exceed 1MB 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 rim: .text
focus	Σ I	0..1	Reference(Resource)	There are no (further) constraints on this element Element id Task.focus Short description What task is acting on Definition The request being actioned or the resource being manipulated by this task. Requirements Used to identify the thing to be done. Comments If multiple resources need to be manipulated, use sub-tasks. (This ensures that status can be tracked independently for each referenced resource.). 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) w5: FiveWs.what[x] rim: .outboundRelationship[typeCode=SUBJ].target
for	Σ I	0..1	Reference(Resource)	There are no (further) constraints on this element Element id Task.for Short description Beneficiary of the Task Alternate names Patient Definition The entity who benefits from the performance of the service specified in the task (e.g., the patient). Requirements Used to track tasks outstanding for a beneficiary. Do not use to track the task owner or creator (see owner and creator respectively). This can also affect access control. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.subject, Event.subject w5: FiveWs.subject[x] rim: .participation[typeCode=RCT].role w5: FiveWs.subject
encounter	Σ I	0..1	Reference(Encounter)	There are no (further) constraints on this element Element id Task.encounter Short description Healthcare event during which this task originated Definition The healthcare event (e.g. a patient and healthcare provider interaction) during which this task was created. Requirements For some tasks it may be important to know the link between the encounter the task originated within. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.context, Event.context w5: FiveWs.context rim: .inboundRelationship[typeCode=COMP].source[classCode=PCPR, moodCode=EVN]
executionPeriod	Σ I	0..1	Period	There are no (further) constraints on this element Element id Task.executionPeriod Short description Start and end time of execution Definition Identifies the time action was first taken against the task (start) and/or the time final action was taken against the task prior to marking it as completed (end). 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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` Mappings rim: n/a v2: DR rim: IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"] workflow: Event.occurrence[x] w5: FiveWs.done[x] rim: .effectiveTime
authoredOn	S I	0..1	dateTime	There are no (further) constraints on this element Element id Task.authoredOn Short description Task Creation Date Alternate names Created Date Definition The date and time this task was created. Requirements Most often used along with lastUpdated to track duration of task to supporting monitoring and management. 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: Request.authoredOn w5: FiveWs.recorded rim: .participation[typeCode=AUT].time
lastModified	Σ I	0..1	dateTime	There are no (further) constraints on this element Element id Task.lastModified Short description Task Last Modified Date Alternate names Update Date Definition The date and time of last modification to this task. Requirements Used along with history to track task activity and time in a particular task state. This enables monitoring and management. 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 rim: .inboundRelationship[typeCode=SUBJ, ].source[classCode=CACT, moodCode=EVN].effectiveTime
requester	Σ I	0..1	Reference(Device \| Organization \| Patient \| Practitioner \| PractitionerRole \| RelatedPerson)	There are no (further) constraints on this element Element id Task.requester Short description Who is asking for task to be done Definition The creator of the task. Requirements Identifies who created this task. May be used by access control mechanisms (e.g., to ensure that only the creator can cancel a task). Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.requester w5: FiveWs.author rim: .participation[typeCode=AUT].role
performerType		0..*	CodeableConceptBinding	There are no (further) constraints on this element Element id Task.performerType Short description Requested performer Definition The kind of participant that should perform the task. Requirements Use to distinguish tasks on different activity queues. 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 type(s) of task performers allowed. ProcedurePerformerRoleCodes (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 workflow: Event.performer.role, Request.performerType w5: FiveWs.actor rim: .participation[typeCode=PRF].role.code
owner	S Σ I	0..1	Reference(PractitionerRole)	Element id Task.owner Short description Responsible individual Alternate names Performer, Executer Definition Individual organization or Device currently responsible for task execution. Requirements Identifies who is expected to perform this task. Comments Tasks may be created with an owner not yet identified. Data type Reference(PractitionerRole) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.performer.actor, Request.performer w5: FiveWs.actor rim: .participation[typeCode=PRF].role
id		0..1	string	There are no (further) constraints on this element Element id Task.owner.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 Task.owner.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 manageable, 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	S Σ I	0..1	string	There are no (further) constraints on this element Element id Task.owner.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..1	uriBinding	There are no (further) constraints on this element Element id Task.owner.type Short description Type the reference refers to (e.g. "Patient") 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 RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified. 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	S Σ	0..1	Identifier	There are no (further) constraints on this element Element id Task.owner.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). Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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 Task.owner.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 Task.owner.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 manageable, 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..1	codeBinding	There are no (further) constraints on this element Element id Task.owner.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..1	CodeableConceptBinding	There are no (further) constraints on this element Element id Task.owner.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. Identifier Type Codes (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	S Σ	1..1	uri	There are no (further) constraints on this element Element id Task.owner.identifier.system Short description The namespace for the identifier value Definition Establishes the namespace for the value - that is, a 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())` Examples General http://www.acme.com/identifiers/patient Mappings rim: n/a v2: CX.4 / EI-2-4 rim: II.root or Role.id.root servd: ./IdentifierType
value	S Σ	1..1	string	There are no (further) constraints on this element Element id Task.owner.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 Rendered Value extension. 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..1	Period	There are no (further) constraints on this element Element id Task.owner.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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` 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..1	Reference(Organization)	There are no (further) constraints on this element Element id Task.owner.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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` 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	0..1	string	There are no (further) constraints on this element Element id Task.owner.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
location	Σ I	0..1	Reference(Location)	There are no (further) constraints on this element Element id Task.location Short description Where task occurs Definition Principal physical location where the this task is performed. Requirements Ties the event to where the records are likely kept and provides context around the event occurrence (e.g. if it occurred inside or outside a dedicated healthcare setting). Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(Location) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.reasonCode, Event.reasonCode w5: FiveWs.where[x] rim: .participation[typeCode=LOC].role
reasonCode		0..1	CodeableConcept	There are no (further) constraints on this element Element id Task.reasonCode Short description Why task is needed Definition A description or code indicating why this task needs to be performed. Comments This should only be included if there is no focus or if it differs from the reason indicated on the focus. Data type CodeableConcept Binding Indicates why the task is needed. E.g. Suspended because patient admitted to hospital. (unbound) (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.location w5: FiveWs.why[x] v2: EVN.7 rim: .reasonCode
reasonReference	I	0..1	Reference(Resource)	There are no (further) constraints on this element Element id Task.reasonReference Short description Why task is needed Definition A resource reference indicating why this task needs to be performed. Comments Tasks might be justified based on an Observation, a Condition, a past or planned procedure, etc. This should only be included if there is no focus or if it differs from the reason indicated on the focus. Use the CodeableConcept text element in `Task.reasonCode` if the data is free (uncoded) text. 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.reasonReference, Event.reasonReference w5: FiveWs.why[x] rim: .outboundRelationship[typeCode=RSON].target
insurance	I	0..*	Reference(Coverage \| ClaimResponse)	There are no (further) constraints on this element Element id Task.insurance Short description Associated insurance coverage Definition Insurance plans, coverage extensions, pre-authorizations and/or pre-determinations that may be relevant to the Task. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(Coverage \| ClaimResponse) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.insurance v2: IN1/IN2 rim: .outboundRelationship[typeCode=COVBY].target
note		0..*	Annotation	There are no (further) constraints on this element Element id Task.note Short description Comments made about the task Definition Free-text information captured about the task as it progresses. 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: Request.note, Event.note rim: .inboundRelationship[typeCode=SUBJ, ].source[classCode=OBS, moodCode=EVN, code="annotation"].value(string)
relevantHistory	I	0..*	Reference(Provenance)	There are no (further) constraints on this element Element id Task.relevantHistory Short description Key events in history of the Task Alternate names Status History Definition Links to Provenance records for past versions of this Task that identify key state transitions or updates that are likely to be relevant to a user looking at the current version of the task. Comments This element does not point to the Provenance associated with the current version of the resource - as it would be created after this version existed. The Provenance for the current version can be retrieved with a _revinclude. Data type Reference(Provenance) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.relevantHistory rim: .inboundRelationship(typeCode=SUBJ].source[classCode=CACT, moodCode=EVN]
restriction		0..1	BackboneElement	There are no (further) constraints on this element Element id Task.restriction Short description Constraints on fulfillment tasks Definition If the Task.focus is a request resource and the task is seeking fulfillment (i.e. is asking for the request to be actioned), this element identifies any limitations on what parts of the referenced request should be actioned. Requirements Sometimes when fulfillment is sought, you don't want full fulfillment. 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 rim: Instead of pointing to request, would point to component of request, having these characteristics
id		0..1	string	There are no (further) constraints on this element Element id Task.restriction.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 Task.restriction.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 manageable, 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 Task.restriction.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 manageable, 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
repetitions		0..1	positiveInt	There are no (further) constraints on this element Element id Task.restriction.repetitions Short description How many times to repeat Definition Indicates the number of times the requested action should occur. Requirements E.g. order that requests monthly lab tests, fulfillment is sought for 1. Comments 32 bit number; for values larger than this, use decimal Data type positiveInt Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: .repeatNumber
period	I	0..1	Period	There are no (further) constraints on this element Element id Task.restriction.period Short description When fulfillment sought Definition Over what time-period is fulfillment sought. Requirements E.g. order that authorizes 1 year's services. Fulfillment is sought for next 3 months. Comments Note that period.high is the due date representing the time by which the task should be completed. 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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` Mappings rim: n/a v2: DR rim: IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"] rim: .effectiveTime(IVL<TS>)
recipient	I	0..*	Reference(Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Group \| Organization)	There are no (further) constraints on this element Element id Task.restriction.recipient Short description For whom is fulfillment sought? Definition For requests that are targeted to more than on potential recipient/target, for whom is fulfillment sought? Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Group \| 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) rim: .participation[typeCode=SBJ].role
input		0..*	BackboneElement	There are no (further) constraints on this element Element id Task.input Short description Information used to perform task Alternate names Supporting Information Definition Additional information that may be needed in the execution of the task. Requirements Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows. 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 rim: ???
id		0..1	string	There are no (further) constraints on this element Element id Task.input.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 Task.input.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 manageable, 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 Task.input.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 manageable, 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
type		1..1	CodeableConcept	There are no (further) constraints on this element Element id Task.input.type Short description Label for the input Alternate names Name Definition A code or description indicating how the input is intended to be used as part of the task execution. Requirements Inputs are named to enable task automation to bind data and pass it from one task to the next. Comments If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input. Data type CodeableConcept Binding Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc. (unbound) (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 rim: ???
value[x]		1..1		There are no (further) constraints on this element Element id Task.input.value[x] Short description Content to use in performing the task Definition The value of the input parameter as a basic type. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: ???
valueBase64Binary			base64Binary	There are no (further) constraints on this element Data type base64Binary
valueBoolean			boolean	There are no (further) constraints on this element Data type boolean
valueCanonical			canonical()	There are no (further) constraints on this element Data type canonical()
valueCode			code	There are no (further) constraints on this element Data type code
valueDate			date	There are no (further) constraints on this element Data type date
valueDateTime			dateTime	There are no (further) constraints on this element Data type dateTime
valueDecimal			decimal	There are no (further) constraints on this element Data type decimal
valueId			id	There are no (further) constraints on this element Data type id
valueInstant			instant	There are no (further) constraints on this element Data type instant
valueInteger			integer	There are no (further) constraints on this element Data type integer
valueMarkdown			markdown	There are no (further) constraints on this element Data type markdown
valueOid			oid	There are no (further) constraints on this element Data type oid
valuePositiveInt			positiveInt	There are no (further) constraints on this element Data type positiveInt
valueString			string	There are no (further) constraints on this element Data type string
valueTime			time	There are no (further) constraints on this element Data type time
valueUnsignedInt			unsignedInt	There are no (further) constraints on this element Data type unsignedInt
valueUri			uri	There are no (further) constraints on this element Data type uri
valueUrl			url	There are no (further) constraints on this element Data type url
valueUuid			uuid	There are no (further) constraints on this element Data type uuid
valueAddress			Address	There are no (further) constraints on this element Data type Address
valueAge			Age	There are no (further) constraints on this element Data type Age
valueAnnotation			Annotation	There are no (further) constraints on this element Data type Annotation
valueAttachment			Attachment	There are no (further) constraints on this element Data type Attachment
valueCodeableConcept			CodeableConcept	There are no (further) constraints on this element Data type CodeableConcept
valueCoding			Coding	There are no (further) constraints on this element Data type Coding
valueContactPoint			ContactPoint	There are no (further) constraints on this element Data type ContactPoint
valueCount			Count	There are no (further) constraints on this element Data type Count
valueDistance			Distance	There are no (further) constraints on this element Data type Distance
valueDuration			Duration	There are no (further) constraints on this element Data type Duration
valueHumanName			HumanName	There are no (further) constraints on this element Data type HumanName
valueIdentifier			Identifier	There are no (further) constraints on this element Data type Identifier
valueMoney			Money	There are no (further) constraints on this element Data type Money
valuePeriod			Period	There are no (further) constraints on this element Data type Period
valueQuantity			Quantity	There are no (further) constraints on this element Data type Quantity
valueRange			Range	There are no (further) constraints on this element Data type Range
valueRatio			Ratio	There are no (further) constraints on this element Data type Ratio
valueSampledData			SampledData	There are no (further) constraints on this element Data type SampledData
valueSignature			Signature	There are no (further) constraints on this element Data type Signature
valueTiming			Timing	There are no (further) constraints on this element Data type Timing
valueContactDetail			ContactDetail	There are no (further) constraints on this element Data type ContactDetail
valueContributor			Contributor	There are no (further) constraints on this element Data type Contributor
valueDataRequirement			DataRequirement	There are no (further) constraints on this element Data type DataRequirement
valueExpression			Expression	There are no (further) constraints on this element Data type Expression
valueParameterDefinition			ParameterDefinition	There are no (further) constraints on this element Data type ParameterDefinition
valueRelatedArtifact			RelatedArtifact	There are no (further) constraints on this element Data type RelatedArtifact
valueTriggerDefinition			TriggerDefinition	There are no (further) constraints on this element Data type TriggerDefinition
valueUsageContext			UsageContext	There are no (further) constraints on this element Data type UsageContext
valueDosage			Dosage	There are no (further) constraints on this element Data type Dosage
valueMeta			Meta	There are no (further) constraints on this element Data type Meta
valueReference			Reference()	There are no (further) constraints on this element Data type Reference()
output	S	0..*	BackboneElement	There are no (further) constraints on this element Element id Task.output Short description Information produced as part of task Definition Outputs produced by the Task. Requirements Resources and data produced during the execution the task. This data is generated by the business logic of task execution, and is stored separately because it varies between workflows. 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 rim: ???
id		0..1	string	There are no (further) constraints on this element Element id Task.output.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 Task.output.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 manageable, 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 Task.output.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 manageable, 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
type		1..1	CodeableConcept	There are no (further) constraints on this element Element id Task.output.type Short description Label for output Alternate names Name Definition The name of the Output parameter. Requirements Outputs are named to enable task automation to bind data and pass it from one task to the next. 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 to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc. (unbound) (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 rim: ???
value[x]	S	1..1		There are no (further) constraints on this element Element id Task.output.value[x] Short description Result of output Definition The value of the Output parameter as a basic type. Requirements Task outputs can take any form. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: ???
valueReference			Reference(Communication)	Data type Reference(Communication)

Task	I		Task	There are no (further) constraints on this element Element id Task Short description A task to be performed Definition A task to be performed. Data type Task 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().as(canonical) \| %resource.descendants().as(uri) \| %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(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()` inv-1: Last modified date must be greater than or equal to authored-on date. `lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn` Mappings rim: Entity. Role, or Act workflow: Request, Event rim: ControlAct[moodCode=INT]
id	Σ	0..1	string	There are no (further) constraints on this element Element id Task.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 The only time that a resource does not have an id is when it is being submitted to the server using a create operation. Data type string
meta	Σ	0..1	Meta	There are no (further) constraints on this element Element id Task.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 Task.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 it's 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 Task.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 A human language. CommonLanguages (preferred) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
text		0..1	Narrative	There are no (further) constraints on this element Element id Task.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 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		0..*	Resource	There are no (further) constraints on this element Element id Task.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, and nor can they have their own independent transaction scope. 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: Entity. Role, or Act rim: N/A
extension	I	0..*	Extension	Element id Task.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 manageable, 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
PatientNeedsToBeSeen	S I	0..1	Extension(boolean)	Element id Task.extension:PatientNeedsToBeSeen Short description Optional Extensions Element Alternate names extensions, user content Definition Following a consult, used to communicate if a patient needs to be seen in person. Comments Used to support the eConsult use case where a patient is referred to a care provider. Used for when the care provider responds with an eConsult rather than accept the referral, but the patient wants a referral anyway. Data type Extension(boolean) Extension URL http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-patient-needs-to-be-seen-EXT 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	?! I	0..*	Extension	There are no (further) constraints on this element Element id Task.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 manageable, 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		0..*	Identifier	There are no (further) constraints on this element Element id Task.identifier Short description Task Instance Identifier Definition The business identifier for this task. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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: Request.identifier, Event.identifier w5: FiveWs.identifier rim: .id
instantiatesCanonical	Σ	0..1	canonical(ActivityDefinition)	There are no (further) constraints on this element Element id Task.instantiatesCanonical Short description Formal definition of task 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 Task. Requirements Enables a formal definition of how he task is to be performed, enabling automation. Comments see Canonical References Data type canonical(ActivityDefinition) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Request.instantiatesCanonical, Event.instantiatesCanonical rim: .outboundRelationship[typeCode=DEFN].target
instantiatesUri	Σ	0..1	uri	There are no (further) constraints on this element Element id Task.instantiatesUri Short description Formal definition of task 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 Task. Requirements Enables a formal definition of how he task is to be performed (e.g. using BPMN, BPEL, XPDL or other formal notation to be associated with a task), enabling automation. 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())` Mappings rim: n/a workflow: Event.instantiatesUrl rim: .outboundRelationship[typeCode=DEFN].target
basedOn	S Σ I	1..1	Reference(ServiceRequest)	Element id Task.basedOn Short description Request fulfilled by this task Definition BasedOn refers to a higher-level authorization that triggered the creation of the task. It references a "request" resource such as a ServiceRequest, MedicationRequest, ServiceRequest, CarePlan, etc. which is distinct from the "request" resource the task is seeking to fulfill. This latter resource is referenced by FocusOn. For example, based on a ServiceRequest (= BasedOn), a task is created to fulfill a procedureRequest ( = FocusOn ) to collect a specimen from a patient. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(ServiceRequest) Allowed aggregation: referenced 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.basedOn, Event.basedOn rim: .outboundRelationship[typeCode=FLFS].target[moodCode=INT]
id		0..1	string	There are no (further) constraints on this element Element id Task.basedOn.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 Task.basedOn.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 manageable, 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	S Σ I	0..1	string	There are no (further) constraints on this element Element id Task.basedOn.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..1	uriBinding	There are no (further) constraints on this element Element id Task.basedOn.type Short description Type the reference refers to (e.g. "Patient") 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 RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified. 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	S Σ	0..1	Identifier	There are no (further) constraints on this element Element id Task.basedOn.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). Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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 Task.basedOn.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 Task.basedOn.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 manageable, 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..1	codeBinding	There are no (further) constraints on this element Element id Task.basedOn.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..1	CodeableConceptBinding	There are no (further) constraints on this element Element id Task.basedOn.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. Identifier Type Codes (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	S Σ	1..1	uri	There are no (further) constraints on this element Element id Task.basedOn.identifier.system Short description The namespace for the identifier value Definition Establishes the namespace for the value - that is, a 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())` Examples General http://www.acme.com/identifiers/patient Mappings rim: n/a v2: CX.4 / EI-2-4 rim: II.root or Role.id.root servd: ./IdentifierType
value	S Σ	1..1	string	There are no (further) constraints on this element Element id Task.basedOn.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 Rendered Value extension. 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..1	Period	There are no (further) constraints on this element Element id Task.basedOn.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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` 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..1	Reference(Organization)	There are no (further) constraints on this element Element id Task.basedOn.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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` 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	0..1	string	There are no (further) constraints on this element Element id Task.basedOn.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
groupIdentifier	Σ	0..1	Identifier	There are no (further) constraints on this element Element id Task.groupIdentifier Short description Requisition or grouper id Definition An identifier that links together multiple tasks and other requests that were created in the same context. Requirements Billing and/or reporting can be linked to whether multiple requests were created as a single unit. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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: Request.groupIdentifier rim: .inboundRelationship[typeCode=COMP].source[moodCode=INT].id
partOf	Σ I	0..*	Reference(Task)	There are no (further) constraints on this element Element id Task.partOf Short description Composite task Definition Task that this particular task is part of. Requirements Allows tasks to be broken down into sub-steps (and this division can occur independent of the original task). Comments This should usually be 0..1. Data type Reference(Task) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.partOf rim: .inboundRelationship[typeCode=COMP].source[moodCode=INT]
status	S Σ ?!	1..1	codeBinding	There are no (further) constraints on this element Element id Task.status Short description draft \| requested \| received \| accepted \| + Definition The current status of the task. Requirements These states enable coordination of task status with off-the-shelf workflow solutions that support automation of tasks. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Data type code Binding The current status of the task. TaskStatus (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Request.status, Event.status w5: FiveWs.status rim: .statusCode
statusReason	Σ	0..1	CodeableConcept	There are no (further) constraints on this element Element id Task.statusReason Short description Reason for current status Definition An explanation as to why this task is held, failed, was refused, etc. Comments This applies to the current status. Look at the history of the task to see reasons for past statuses. Data type CodeableConcept Binding Codes to identify the reason for current status. These will typically be specific to a particular workflow. (unbound) (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 rim: .inboundRelationship[typeCode=SUBJ].source[classCode=CACT, moodCode=EVN, code="status change"].reasonCode
businessStatus	S Σ	0..1	CodeableConceptBinding	Element id Task.businessStatus Short description E.g. "Specimen collected", "IV prepped" Definition Contains business-specific nuances of the business state. Requirements There's often a need to track substates of a task - this is often variable by specific workflow implementation. 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 domain-specific business-contextual sub-state of the task. For example: "Blood drawn", "IV inserted", "Awaiting physician signature", etc. TaskBusinessStatus (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 rim: .inboundRelationship[typeCode=SUBJ].source[classCode=OBS, moodCode=EVN, code="business status"]
id		0..1	string	There are no (further) constraints on this element Element id Task.businessStatus.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 Task.businessStatus.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 manageable, 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
StatusReason	S I	0..1	Extension(CodeableConcept)	Element id Task.businessStatus.extension:StatusReason Short description BusinessStatusReason Alternate names extensions, user content Definition A reason for why the business reason is as it is. 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(CodeableConcept) Extension URL http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-task-business-status-reason-EXT 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	0..*	Coding	There are no (further) constraints on this element Element id Task.businessStatus.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())` 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
text	Σ	0..1	string	There are no (further) constraints on this element Element id Task.businessStatus.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
intent	S Σ	1..1	codeBindingPattern	Element id Task.intent Short description unknown \| proposal \| plan \| order \| original-order \| reflex-order \| filler-order \| instance-order \| option Definition Indicates the "level" of actionability associated with the Task, i.e. i+R[9]Cs this a proposed task, a planned task, an actionable task, etc. Comments This element is immutable. Proposed tasks, planned tasks, etc. must be distinct instances. In most cases, Tasks will have an intent of "order". Data type code Binding Distinguishes whether the task is a proposal, plan or full order. TaskIntent (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern proposal Mappings rim: n/a workflow: Request.intent w5: FiveWs.class rim: .moodCode
priority		0..1	codeBinding	There are no (further) constraints on this element Element id Task.priority Short description routine \| urgent \| asap \| stat Definition Indicates how quickly the Task should be addressed with respect to other requests. Requirements Used to identify the service level expected while performing a task. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Meaning when missing If missing, this task should be performed with normal priority Data type code Binding The task's priority. RequestPriority (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Request.priority w5: FiveWs.grade rim: .priorityCode
code	S Σ	0..1	CodeableConceptBinding	Element id Task.code Short description Task Type Definition A name or code (or both) briefly describing what the task involves. Comments Data type CodeableConcept Binding Codes to identify what the task involves. These will typically be specific to a particular workflow. TaskCode (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 workflow: Request.code, Event.code w5: FiveWs.what[x] rim: .code
description	Σ	0..1	string	There are no (further) constraints on this element Element id Task.description Short description Human-readable explanation of task Definition A free-text description of what is to be performed. Comments Note that FHIR strings SHALL NOT exceed 1MB 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 rim: .text
focus	Σ I	0..1	Reference(Resource)	There are no (further) constraints on this element Element id Task.focus Short description What task is acting on Definition The request being actioned or the resource being manipulated by this task. Requirements Used to identify the thing to be done. Comments If multiple resources need to be manipulated, use sub-tasks. (This ensures that status can be tracked independently for each referenced resource.). 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) w5: FiveWs.what[x] rim: .outboundRelationship[typeCode=SUBJ].target
for	Σ I	0..1	Reference(Resource)	There are no (further) constraints on this element Element id Task.for Short description Beneficiary of the Task Alternate names Patient Definition The entity who benefits from the performance of the service specified in the task (e.g., the patient). Requirements Used to track tasks outstanding for a beneficiary. Do not use to track the task owner or creator (see owner and creator respectively). This can also affect access control. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.subject, Event.subject w5: FiveWs.subject[x] rim: .participation[typeCode=RCT].role w5: FiveWs.subject
encounter	Σ I	0..1	Reference(Encounter)	There are no (further) constraints on this element Element id Task.encounter Short description Healthcare event during which this task originated Definition The healthcare event (e.g. a patient and healthcare provider interaction) during which this task was created. Requirements For some tasks it may be important to know the link between the encounter the task originated within. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.context, Event.context w5: FiveWs.context rim: .inboundRelationship[typeCode=COMP].source[classCode=PCPR, moodCode=EVN]
executionPeriod	Σ I	0..1	Period	There are no (further) constraints on this element Element id Task.executionPeriod Short description Start and end time of execution Definition Identifies the time action was first taken against the task (start) and/or the time final action was taken against the task prior to marking it as completed (end). 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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` Mappings rim: n/a v2: DR rim: IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"] workflow: Event.occurrence[x] w5: FiveWs.done[x] rim: .effectiveTime
authoredOn	S I	0..1	dateTime	There are no (further) constraints on this element Element id Task.authoredOn Short description Task Creation Date Alternate names Created Date Definition The date and time this task was created. Requirements Most often used along with lastUpdated to track duration of task to supporting monitoring and management. 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: Request.authoredOn w5: FiveWs.recorded rim: .participation[typeCode=AUT].time
lastModified	Σ I	0..1	dateTime	There are no (further) constraints on this element Element id Task.lastModified Short description Task Last Modified Date Alternate names Update Date Definition The date and time of last modification to this task. Requirements Used along with history to track task activity and time in a particular task state. This enables monitoring and management. 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 rim: .inboundRelationship[typeCode=SUBJ, ].source[classCode=CACT, moodCode=EVN].effectiveTime
requester	Σ I	0..1	Reference(Device \| Organization \| Patient \| Practitioner \| PractitionerRole \| RelatedPerson)	There are no (further) constraints on this element Element id Task.requester Short description Who is asking for task to be done Definition The creator of the task. Requirements Identifies who created this task. May be used by access control mechanisms (e.g., to ensure that only the creator can cancel a task). Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.requester w5: FiveWs.author rim: .participation[typeCode=AUT].role
performerType		0..*	CodeableConceptBinding	There are no (further) constraints on this element Element id Task.performerType Short description Requested performer Definition The kind of participant that should perform the task. Requirements Use to distinguish tasks on different activity queues. 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 type(s) of task performers allowed. ProcedurePerformerRoleCodes (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 workflow: Event.performer.role, Request.performerType w5: FiveWs.actor rim: .participation[typeCode=PRF].role.code
owner	S Σ I	0..1	Reference(PractitionerRole)	Element id Task.owner Short description Responsible individual Alternate names Performer, Executer Definition Individual organization or Device currently responsible for task execution. Requirements Identifies who is expected to perform this task. Comments Tasks may be created with an owner not yet identified. Data type Reference(PractitionerRole) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.performer.actor, Request.performer w5: FiveWs.actor rim: .participation[typeCode=PRF].role
id		0..1	string	There are no (further) constraints on this element Element id Task.owner.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 Task.owner.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 manageable, 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	S Σ I	0..1	string	There are no (further) constraints on this element Element id Task.owner.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..1	uriBinding	There are no (further) constraints on this element Element id Task.owner.type Short description Type the reference refers to (e.g. "Patient") 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 RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified. 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	S Σ	0..1	Identifier	There are no (further) constraints on this element Element id Task.owner.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). Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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 Task.owner.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 Task.owner.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 manageable, 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..1	codeBinding	There are no (further) constraints on this element Element id Task.owner.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..1	CodeableConceptBinding	There are no (further) constraints on this element Element id Task.owner.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. Identifier Type Codes (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	S Σ	1..1	uri	There are no (further) constraints on this element Element id Task.owner.identifier.system Short description The namespace for the identifier value Definition Establishes the namespace for the value - that is, a 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())` Examples General http://www.acme.com/identifiers/patient Mappings rim: n/a v2: CX.4 / EI-2-4 rim: II.root or Role.id.root servd: ./IdentifierType
value	S Σ	1..1	string	There are no (further) constraints on this element Element id Task.owner.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 Rendered Value extension. 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..1	Period	There are no (further) constraints on this element Element id Task.owner.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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` 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..1	Reference(Organization)	There are no (further) constraints on this element Element id Task.owner.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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` 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	0..1	string	There are no (further) constraints on this element Element id Task.owner.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
location	Σ I	0..1	Reference(Location)	There are no (further) constraints on this element Element id Task.location Short description Where task occurs Definition Principal physical location where the this task is performed. Requirements Ties the event to where the records are likely kept and provides context around the event occurrence (e.g. if it occurred inside or outside a dedicated healthcare setting). Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(Location) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.reasonCode, Event.reasonCode w5: FiveWs.where[x] rim: .participation[typeCode=LOC].role
reasonCode		0..1	CodeableConcept	There are no (further) constraints on this element Element id Task.reasonCode Short description Why task is needed Definition A description or code indicating why this task needs to be performed. Comments This should only be included if there is no focus or if it differs from the reason indicated on the focus. Data type CodeableConcept Binding Indicates why the task is needed. E.g. Suspended because patient admitted to hospital. (unbound) (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.location w5: FiveWs.why[x] v2: EVN.7 rim: .reasonCode
reasonReference	I	0..1	Reference(Resource)	There are no (further) constraints on this element Element id Task.reasonReference Short description Why task is needed Definition A resource reference indicating why this task needs to be performed. Comments Tasks might be justified based on an Observation, a Condition, a past or planned procedure, etc. This should only be included if there is no focus or if it differs from the reason indicated on the focus. Use the CodeableConcept text element in `Task.reasonCode` if the data is free (uncoded) text. 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.reasonReference, Event.reasonReference w5: FiveWs.why[x] rim: .outboundRelationship[typeCode=RSON].target
insurance	I	0..*	Reference(Coverage \| ClaimResponse)	There are no (further) constraints on this element Element id Task.insurance Short description Associated insurance coverage Definition Insurance plans, coverage extensions, pre-authorizations and/or pre-determinations that may be relevant to the Task. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(Coverage \| ClaimResponse) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.insurance v2: IN1/IN2 rim: .outboundRelationship[typeCode=COVBY].target
note		0..*	Annotation	There are no (further) constraints on this element Element id Task.note Short description Comments made about the task Definition Free-text information captured about the task as it progresses. 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: Request.note, Event.note rim: .inboundRelationship[typeCode=SUBJ, ].source[classCode=OBS, moodCode=EVN, code="annotation"].value(string)
relevantHistory	I	0..*	Reference(Provenance)	There are no (further) constraints on this element Element id Task.relevantHistory Short description Key events in history of the Task Alternate names Status History Definition Links to Provenance records for past versions of this Task that identify key state transitions or updates that are likely to be relevant to a user looking at the current version of the task. Comments This element does not point to the Provenance associated with the current version of the resource - as it would be created after this version existed. The Provenance for the current version can be retrieved with a _revinclude. Data type Reference(Provenance) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.relevantHistory rim: .inboundRelationship(typeCode=SUBJ].source[classCode=CACT, moodCode=EVN]
restriction		0..1	BackboneElement	There are no (further) constraints on this element Element id Task.restriction Short description Constraints on fulfillment tasks Definition If the Task.focus is a request resource and the task is seeking fulfillment (i.e. is asking for the request to be actioned), this element identifies any limitations on what parts of the referenced request should be actioned. Requirements Sometimes when fulfillment is sought, you don't want full fulfillment. 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 rim: Instead of pointing to request, would point to component of request, having these characteristics
id		0..1	string	There are no (further) constraints on this element Element id Task.restriction.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 Task.restriction.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 manageable, 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 Task.restriction.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 manageable, 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
repetitions		0..1	positiveInt	There are no (further) constraints on this element Element id Task.restriction.repetitions Short description How many times to repeat Definition Indicates the number of times the requested action should occur. Requirements E.g. order that requests monthly lab tests, fulfillment is sought for 1. Comments 32 bit number; for values larger than this, use decimal Data type positiveInt Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: .repeatNumber
period	I	0..1	Period	There are no (further) constraints on this element Element id Task.restriction.period Short description When fulfillment sought Definition Over what time-period is fulfillment sought. Requirements E.g. order that authorizes 1 year's services. Fulfillment is sought for next 3 months. Comments Note that period.high is the due date representing the time by which the task should be completed. 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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` Mappings rim: n/a v2: DR rim: IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"] rim: .effectiveTime(IVL<TS>)
recipient	I	0..*	Reference(Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Group \| Organization)	There are no (further) constraints on this element Element id Task.restriction.recipient Short description For whom is fulfillment sought? Definition For requests that are targeted to more than on potential recipient/target, for whom is fulfillment sought? Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Group \| 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) rim: .participation[typeCode=SBJ].role
input		0..*	BackboneElement	There are no (further) constraints on this element Element id Task.input Short description Information used to perform task Alternate names Supporting Information Definition Additional information that may be needed in the execution of the task. Requirements Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows. 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 rim: ???
id		0..1	string	There are no (further) constraints on this element Element id Task.input.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 Task.input.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 manageable, 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 Task.input.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 manageable, 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
type		1..1	CodeableConcept	There are no (further) constraints on this element Element id Task.input.type Short description Label for the input Alternate names Name Definition A code or description indicating how the input is intended to be used as part of the task execution. Requirements Inputs are named to enable task automation to bind data and pass it from one task to the next. Comments If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input. Data type CodeableConcept Binding Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc. (unbound) (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 rim: ???
value[x]		1..1		There are no (further) constraints on this element Element id Task.input.value[x] Short description Content to use in performing the task Definition The value of the input parameter as a basic type. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: ???
valueBase64Binary			base64Binary	There are no (further) constraints on this element Data type base64Binary
valueBoolean			boolean	There are no (further) constraints on this element Data type boolean
valueCanonical			canonical()	There are no (further) constraints on this element Data type canonical()
valueCode			code	There are no (further) constraints on this element Data type code
valueDate			date	There are no (further) constraints on this element Data type date
valueDateTime			dateTime	There are no (further) constraints on this element Data type dateTime
valueDecimal			decimal	There are no (further) constraints on this element Data type decimal
valueId			id	There are no (further) constraints on this element Data type id
valueInstant			instant	There are no (further) constraints on this element Data type instant
valueInteger			integer	There are no (further) constraints on this element Data type integer
valueMarkdown			markdown	There are no (further) constraints on this element Data type markdown
valueOid			oid	There are no (further) constraints on this element Data type oid
valuePositiveInt			positiveInt	There are no (further) constraints on this element Data type positiveInt
valueString			string	There are no (further) constraints on this element Data type string
valueTime			time	There are no (further) constraints on this element Data type time
valueUnsignedInt			unsignedInt	There are no (further) constraints on this element Data type unsignedInt
valueUri			uri	There are no (further) constraints on this element Data type uri
valueUrl			url	There are no (further) constraints on this element Data type url
valueUuid			uuid	There are no (further) constraints on this element Data type uuid
valueAddress			Address	There are no (further) constraints on this element Data type Address
valueAge			Age	There are no (further) constraints on this element Data type Age
valueAnnotation			Annotation	There are no (further) constraints on this element Data type Annotation
valueAttachment			Attachment	There are no (further) constraints on this element Data type Attachment
valueCodeableConcept			CodeableConcept	There are no (further) constraints on this element Data type CodeableConcept
valueCoding			Coding	There are no (further) constraints on this element Data type Coding
valueContactPoint			ContactPoint	There are no (further) constraints on this element Data type ContactPoint
valueCount			Count	There are no (further) constraints on this element Data type Count
valueDistance			Distance	There are no (further) constraints on this element Data type Distance
valueDuration			Duration	There are no (further) constraints on this element Data type Duration
valueHumanName			HumanName	There are no (further) constraints on this element Data type HumanName
valueIdentifier			Identifier	There are no (further) constraints on this element Data type Identifier
valueMoney			Money	There are no (further) constraints on this element Data type Money
valuePeriod			Period	There are no (further) constraints on this element Data type Period
valueQuantity			Quantity	There are no (further) constraints on this element Data type Quantity
valueRange			Range	There are no (further) constraints on this element Data type Range
valueRatio			Ratio	There are no (further) constraints on this element Data type Ratio
valueSampledData			SampledData	There are no (further) constraints on this element Data type SampledData
valueSignature			Signature	There are no (further) constraints on this element Data type Signature
valueTiming			Timing	There are no (further) constraints on this element Data type Timing
valueContactDetail			ContactDetail	There are no (further) constraints on this element Data type ContactDetail
valueContributor			Contributor	There are no (further) constraints on this element Data type Contributor
valueDataRequirement			DataRequirement	There are no (further) constraints on this element Data type DataRequirement
valueExpression			Expression	There are no (further) constraints on this element Data type Expression
valueParameterDefinition			ParameterDefinition	There are no (further) constraints on this element Data type ParameterDefinition
valueRelatedArtifact			RelatedArtifact	There are no (further) constraints on this element Data type RelatedArtifact
valueTriggerDefinition			TriggerDefinition	There are no (further) constraints on this element Data type TriggerDefinition
valueUsageContext			UsageContext	There are no (further) constraints on this element Data type UsageContext
valueDosage			Dosage	There are no (further) constraints on this element Data type Dosage
valueMeta			Meta	There are no (further) constraints on this element Data type Meta
valueReference			Reference()	There are no (further) constraints on this element Data type Reference()
output	S	0..*	BackboneElement	There are no (further) constraints on this element Element id Task.output Short description Information produced as part of task Definition Outputs produced by the Task. Requirements Resources and data produced during the execution the task. This data is generated by the business logic of task execution, and is stored separately because it varies between workflows. 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 rim: ???
id		0..1	string	There are no (further) constraints on this element Element id Task.output.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 Task.output.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 manageable, 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 Task.output.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 manageable, 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
type		1..1	CodeableConcept	There are no (further) constraints on this element Element id Task.output.type Short description Label for output Alternate names Name Definition The name of the Output parameter. Requirements Outputs are named to enable task automation to bind data and pass it from one task to the next. 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 to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc. (unbound) (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 rim: ???
value[x]	S	1..1		There are no (further) constraints on this element Element id Task.output.value[x] Short description Result of output Definition The value of the Output parameter as a basic type. Requirements Task outputs can take any form. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: ???
valueReference			Reference(Communication)	Data type Reference(Communication)

Task	I		Task	There are no (further) constraints on this element Element id Task Short description A task to be performed Definition A task to be performed. Data type Task 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().as(canonical) \| %resource.descendants().as(uri) \| %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(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()` inv-1: Last modified date must be greater than or equal to authored-on date. `lastModified.exists().not() or authoredOn.exists().not() or lastModified >= authoredOn` Mappings rim: Entity. Role, or Act workflow: Request, Event rim: ControlAct[moodCode=INT]
id	Σ	0..1	string	There are no (further) constraints on this element Element id Task.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 The only time that a resource does not have an id is when it is being submitted to the server using a create operation. Data type string
meta	Σ	0..1	Meta	There are no (further) constraints on this element Element id Task.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 Task.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 it's 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 Task.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 A human language. CommonLanguages (preferred) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a
text		0..1	Narrative	There are no (further) constraints on this element Element id Task.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 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		0..*	Resource	There are no (further) constraints on this element Element id Task.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, and nor can they have their own independent transaction scope. 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: Entity. Role, or Act rim: N/A
extension	I	0..*	Extension	Element id Task.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 manageable, 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
PatientNeedsToBeSeen	S I	0..1	Extension(boolean)	Element id Task.extension:PatientNeedsToBeSeen Short description Optional Extensions Element Alternate names extensions, user content Definition Following a consult, used to communicate if a patient needs to be seen in person. Comments Used to support the eConsult use case where a patient is referred to a care provider. Used for when the care provider responds with an eConsult rather than accept the referral, but the patient wants a referral anyway. Data type Extension(boolean) Extension URL http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-patient-needs-to-be-seen-EXT 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	?! I	0..*	Extension	There are no (further) constraints on this element Element id Task.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 manageable, 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		0..*	Identifier	There are no (further) constraints on this element Element id Task.identifier Short description Task Instance Identifier Definition The business identifier for this task. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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: Request.identifier, Event.identifier w5: FiveWs.identifier rim: .id
instantiatesCanonical	Σ	0..1	canonical(ActivityDefinition)	There are no (further) constraints on this element Element id Task.instantiatesCanonical Short description Formal definition of task 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 Task. Requirements Enables a formal definition of how he task is to be performed, enabling automation. Comments see Canonical References Data type canonical(ActivityDefinition) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Request.instantiatesCanonical, Event.instantiatesCanonical rim: .outboundRelationship[typeCode=DEFN].target
instantiatesUri	Σ	0..1	uri	There are no (further) constraints on this element Element id Task.instantiatesUri Short description Formal definition of task 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 Task. Requirements Enables a formal definition of how he task is to be performed (e.g. using BPMN, BPEL, XPDL or other formal notation to be associated with a task), enabling automation. 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())` Mappings rim: n/a workflow: Event.instantiatesUrl rim: .outboundRelationship[typeCode=DEFN].target
basedOn	S Σ I	1..1	Reference(ServiceRequest)	Element id Task.basedOn Short description Request fulfilled by this task Definition BasedOn refers to a higher-level authorization that triggered the creation of the task. It references a "request" resource such as a ServiceRequest, MedicationRequest, ServiceRequest, CarePlan, etc. which is distinct from the "request" resource the task is seeking to fulfill. This latter resource is referenced by FocusOn. For example, based on a ServiceRequest (= BasedOn), a task is created to fulfill a procedureRequest ( = FocusOn ) to collect a specimen from a patient. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(ServiceRequest) Allowed aggregation: referenced 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.basedOn, Event.basedOn rim: .outboundRelationship[typeCode=FLFS].target[moodCode=INT]
id		0..1	string	There are no (further) constraints on this element Element id Task.basedOn.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 Task.basedOn.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 manageable, 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	S Σ I	0..1	string	There are no (further) constraints on this element Element id Task.basedOn.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..1	uriBinding	There are no (further) constraints on this element Element id Task.basedOn.type Short description Type the reference refers to (e.g. "Patient") 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 RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified. 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	S Σ	0..1	Identifier	There are no (further) constraints on this element Element id Task.basedOn.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). Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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 Task.basedOn.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 Task.basedOn.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 manageable, 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..1	codeBinding	There are no (further) constraints on this element Element id Task.basedOn.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..1	CodeableConceptBinding	There are no (further) constraints on this element Element id Task.basedOn.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. Identifier Type Codes (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	S Σ	1..1	uri	There are no (further) constraints on this element Element id Task.basedOn.identifier.system Short description The namespace for the identifier value Definition Establishes the namespace for the value - that is, a 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())` Examples General http://www.acme.com/identifiers/patient Mappings rim: n/a v2: CX.4 / EI-2-4 rim: II.root or Role.id.root servd: ./IdentifierType
value	S Σ	1..1	string	There are no (further) constraints on this element Element id Task.basedOn.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 Rendered Value extension. 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..1	Period	There are no (further) constraints on this element Element id Task.basedOn.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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` 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..1	Reference(Organization)	There are no (further) constraints on this element Element id Task.basedOn.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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` 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	0..1	string	There are no (further) constraints on this element Element id Task.basedOn.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
groupIdentifier	Σ	0..1	Identifier	There are no (further) constraints on this element Element id Task.groupIdentifier Short description Requisition or grouper id Definition An identifier that links together multiple tasks and other requests that were created in the same context. Requirements Billing and/or reporting can be linked to whether multiple requests were created as a single unit. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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: Request.groupIdentifier rim: .inboundRelationship[typeCode=COMP].source[moodCode=INT].id
partOf	Σ I	0..*	Reference(Task)	There are no (further) constraints on this element Element id Task.partOf Short description Composite task Definition Task that this particular task is part of. Requirements Allows tasks to be broken down into sub-steps (and this division can occur independent of the original task). Comments This should usually be 0..1. Data type Reference(Task) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.partOf rim: .inboundRelationship[typeCode=COMP].source[moodCode=INT]
status	S Σ ?!	1..1	codeBinding	There are no (further) constraints on this element Element id Task.status Short description draft \| requested \| received \| accepted \| + Definition The current status of the task. Requirements These states enable coordination of task status with off-the-shelf workflow solutions that support automation of tasks. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Data type code Binding The current status of the task. TaskStatus (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Request.status, Event.status w5: FiveWs.status rim: .statusCode
statusReason	Σ	0..1	CodeableConcept	There are no (further) constraints on this element Element id Task.statusReason Short description Reason for current status Definition An explanation as to why this task is held, failed, was refused, etc. Comments This applies to the current status. Look at the history of the task to see reasons for past statuses. Data type CodeableConcept Binding Codes to identify the reason for current status. These will typically be specific to a particular workflow. (unbound) (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 rim: .inboundRelationship[typeCode=SUBJ].source[classCode=CACT, moodCode=EVN, code="status change"].reasonCode
businessStatus	S Σ	0..1	CodeableConceptBinding	Element id Task.businessStatus Short description E.g. "Specimen collected", "IV prepped" Definition Contains business-specific nuances of the business state. Requirements There's often a need to track substates of a task - this is often variable by specific workflow implementation. 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 domain-specific business-contextual sub-state of the task. For example: "Blood drawn", "IV inserted", "Awaiting physician signature", etc. TaskBusinessStatus (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 rim: .inboundRelationship[typeCode=SUBJ].source[classCode=OBS, moodCode=EVN, code="business status"]
id		0..1	string	There are no (further) constraints on this element Element id Task.businessStatus.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 Task.businessStatus.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 manageable, 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
StatusReason	S I	0..1	Extension(CodeableConcept)	Element id Task.businessStatus.extension:StatusReason Short description BusinessStatusReason Alternate names extensions, user content Definition A reason for why the business reason is as it is. 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(CodeableConcept) Extension URL http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-task-business-status-reason-EXT 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	0..*	Coding	There are no (further) constraints on this element Element id Task.businessStatus.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())` 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
text	Σ	0..1	string	There are no (further) constraints on this element Element id Task.businessStatus.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
intent	S Σ	1..1	codeBindingPattern	Element id Task.intent Short description unknown \| proposal \| plan \| order \| original-order \| reflex-order \| filler-order \| instance-order \| option Definition Indicates the "level" of actionability associated with the Task, i.e. i+R[9]Cs this a proposed task, a planned task, an actionable task, etc. Comments This element is immutable. Proposed tasks, planned tasks, etc. must be distinct instances. In most cases, Tasks will have an intent of "order". Data type code Binding Distinguishes whether the task is a proposal, plan or full order. TaskIntent (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Pattern proposal Mappings rim: n/a workflow: Request.intent w5: FiveWs.class rim: .moodCode
priority		0..1	codeBinding	There are no (further) constraints on this element Element id Task.priority Short description routine \| urgent \| asap \| stat Definition Indicates how quickly the Task should be addressed with respect to other requests. Requirements Used to identify the service level expected while performing a task. Comments Note that FHIR strings SHALL NOT exceed 1MB in size Meaning when missing If missing, this task should be performed with normal priority Data type code Binding The task's priority. RequestPriority (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a workflow: Request.priority w5: FiveWs.grade rim: .priorityCode
code	S Σ	0..1	CodeableConceptBinding	Element id Task.code Short description Task Type Definition A name or code (or both) briefly describing what the task involves. Comments Data type CodeableConcept Binding Codes to identify what the task involves. These will typically be specific to a particular workflow. TaskCode (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 workflow: Request.code, Event.code w5: FiveWs.what[x] rim: .code
description	Σ	0..1	string	There are no (further) constraints on this element Element id Task.description Short description Human-readable explanation of task Definition A free-text description of what is to be performed. Comments Note that FHIR strings SHALL NOT exceed 1MB 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 rim: .text
focus	Σ I	0..1	Reference(Resource)	There are no (further) constraints on this element Element id Task.focus Short description What task is acting on Definition The request being actioned or the resource being manipulated by this task. Requirements Used to identify the thing to be done. Comments If multiple resources need to be manipulated, use sub-tasks. (This ensures that status can be tracked independently for each referenced resource.). 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) w5: FiveWs.what[x] rim: .outboundRelationship[typeCode=SUBJ].target
for	Σ I	0..1	Reference(Resource)	There are no (further) constraints on this element Element id Task.for Short description Beneficiary of the Task Alternate names Patient Definition The entity who benefits from the performance of the service specified in the task (e.g., the patient). Requirements Used to track tasks outstanding for a beneficiary. Do not use to track the task owner or creator (see owner and creator respectively). This can also affect access control. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.subject, Event.subject w5: FiveWs.subject[x] rim: .participation[typeCode=RCT].role w5: FiveWs.subject
encounter	Σ I	0..1	Reference(Encounter)	There are no (further) constraints on this element Element id Task.encounter Short description Healthcare event during which this task originated Definition The healthcare event (e.g. a patient and healthcare provider interaction) during which this task was created. Requirements For some tasks it may be important to know the link between the encounter the task originated within. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.context, Event.context w5: FiveWs.context rim: .inboundRelationship[typeCode=COMP].source[classCode=PCPR, moodCode=EVN]
executionPeriod	Σ I	0..1	Period	There are no (further) constraints on this element Element id Task.executionPeriod Short description Start and end time of execution Definition Identifies the time action was first taken against the task (start) and/or the time final action was taken against the task prior to marking it as completed (end). 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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` Mappings rim: n/a v2: DR rim: IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"] workflow: Event.occurrence[x] w5: FiveWs.done[x] rim: .effectiveTime
authoredOn	S I	0..1	dateTime	There are no (further) constraints on this element Element id Task.authoredOn Short description Task Creation Date Alternate names Created Date Definition The date and time this task was created. Requirements Most often used along with lastUpdated to track duration of task to supporting monitoring and management. 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: Request.authoredOn w5: FiveWs.recorded rim: .participation[typeCode=AUT].time
lastModified	Σ I	0..1	dateTime	There are no (further) constraints on this element Element id Task.lastModified Short description Task Last Modified Date Alternate names Update Date Definition The date and time of last modification to this task. Requirements Used along with history to track task activity and time in a particular task state. This enables monitoring and management. 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 rim: .inboundRelationship[typeCode=SUBJ, ].source[classCode=CACT, moodCode=EVN].effectiveTime
requester	Σ I	0..1	Reference(Device \| Organization \| Patient \| Practitioner \| PractitionerRole \| RelatedPerson)	There are no (further) constraints on this element Element id Task.requester Short description Who is asking for task to be done Definition The creator of the task. Requirements Identifies who created this task. May be used by access control mechanisms (e.g., to ensure that only the creator can cancel a task). Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.requester w5: FiveWs.author rim: .participation[typeCode=AUT].role
performerType		0..*	CodeableConceptBinding	There are no (further) constraints on this element Element id Task.performerType Short description Requested performer Definition The kind of participant that should perform the task. Requirements Use to distinguish tasks on different activity queues. 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 type(s) of task performers allowed. ProcedurePerformerRoleCodes (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 workflow: Event.performer.role, Request.performerType w5: FiveWs.actor rim: .participation[typeCode=PRF].role.code
owner	S Σ I	0..1	Reference(PractitionerRole)	Element id Task.owner Short description Responsible individual Alternate names Performer, Executer Definition Individual organization or Device currently responsible for task execution. Requirements Identifies who is expected to perform this task. Comments Tasks may be created with an owner not yet identified. Data type Reference(PractitionerRole) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Event.performer.actor, Request.performer w5: FiveWs.actor rim: .participation[typeCode=PRF].role
id		0..1	string	There are no (further) constraints on this element Element id Task.owner.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 Task.owner.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 manageable, 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	S Σ I	0..1	string	There are no (further) constraints on this element Element id Task.owner.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..1	uriBinding	There are no (further) constraints on this element Element id Task.owner.type Short description Type the reference refers to (e.g. "Patient") 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 RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified. 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	S Σ	0..1	Identifier	There are no (further) constraints on this element Element id Task.owner.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). Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` 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 Task.owner.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 Task.owner.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 manageable, 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..1	codeBinding	There are no (further) constraints on this element Element id Task.owner.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..1	CodeableConceptBinding	There are no (further) constraints on this element Element id Task.owner.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. Identifier Type Codes (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	S Σ	1..1	uri	There are no (further) constraints on this element Element id Task.owner.identifier.system Short description The namespace for the identifier value Definition Establishes the namespace for the value - that is, a 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())` Examples General http://www.acme.com/identifiers/patient Mappings rim: n/a v2: CX.4 / EI-2-4 rim: II.root or Role.id.root servd: ./IdentifierType
value	S Σ	1..1	string	There are no (further) constraints on this element Element id Task.owner.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 Rendered Value extension. 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..1	Period	There are no (further) constraints on this element Element id Task.owner.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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` 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..1	Reference(Organization)	There are no (further) constraints on this element Element id Task.owner.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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` 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	0..1	string	There are no (further) constraints on this element Element id Task.owner.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
location	Σ I	0..1	Reference(Location)	There are no (further) constraints on this element Element id Task.location Short description Where task occurs Definition Principal physical location where the this task is performed. Requirements Ties the event to where the records are likely kept and provides context around the event occurrence (e.g. if it occurred inside or outside a dedicated healthcare setting). Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(Location) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.reasonCode, Event.reasonCode w5: FiveWs.where[x] rim: .participation[typeCode=LOC].role
reasonCode		0..1	CodeableConcept	There are no (further) constraints on this element Element id Task.reasonCode Short description Why task is needed Definition A description or code indicating why this task needs to be performed. Comments This should only be included if there is no focus or if it differs from the reason indicated on the focus. Data type CodeableConcept Binding Indicates why the task is needed. E.g. Suspended because patient admitted to hospital. (unbound) (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.location w5: FiveWs.why[x] v2: EVN.7 rim: .reasonCode
reasonReference	I	0..1	Reference(Resource)	There are no (further) constraints on this element Element id Task.reasonReference Short description Why task is needed Definition A resource reference indicating why this task needs to be performed. Comments Tasks might be justified based on an Observation, a Condition, a past or planned procedure, etc. This should only be included if there is no focus or if it differs from the reason indicated on the focus. Use the CodeableConcept text element in `Task.reasonCode` if the data is free (uncoded) text. 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.reasonReference, Event.reasonReference w5: FiveWs.why[x] rim: .outboundRelationship[typeCode=RSON].target
insurance	I	0..*	Reference(Coverage \| ClaimResponse)	There are no (further) constraints on this element Element id Task.insurance Short description Associated insurance coverage Definition Insurance plans, coverage extensions, pre-authorizations and/or pre-determinations that may be relevant to the Task. Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(Coverage \| ClaimResponse) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.insurance v2: IN1/IN2 rim: .outboundRelationship[typeCode=COVBY].target
note		0..*	Annotation	There are no (further) constraints on this element Element id Task.note Short description Comments made about the task Definition Free-text information captured about the task as it progresses. 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: Request.note, Event.note rim: .inboundRelationship[typeCode=SUBJ, ].source[classCode=OBS, moodCode=EVN, code="annotation"].value(string)
relevantHistory	I	0..*	Reference(Provenance)	There are no (further) constraints on this element Element id Task.relevantHistory Short description Key events in history of the Task Alternate names Status History Definition Links to Provenance records for past versions of this Task that identify key state transitions or updates that are likely to be relevant to a user looking at the current version of the task. Comments This element does not point to the Provenance associated with the current version of the resource - as it would be created after this version existed. The Provenance for the current version can be retrieved with a _revinclude. Data type Reference(Provenance) 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) workflow: Request.relevantHistory rim: .inboundRelationship(typeCode=SUBJ].source[classCode=CACT, moodCode=EVN]
restriction		0..1	BackboneElement	There are no (further) constraints on this element Element id Task.restriction Short description Constraints on fulfillment tasks Definition If the Task.focus is a request resource and the task is seeking fulfillment (i.e. is asking for the request to be actioned), this element identifies any limitations on what parts of the referenced request should be actioned. Requirements Sometimes when fulfillment is sought, you don't want full fulfillment. 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 rim: Instead of pointing to request, would point to component of request, having these characteristics
id		0..1	string	There are no (further) constraints on this element Element id Task.restriction.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 Task.restriction.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 manageable, 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 Task.restriction.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 manageable, 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
repetitions		0..1	positiveInt	There are no (further) constraints on this element Element id Task.restriction.repetitions Short description How many times to repeat Definition Indicates the number of times the requested action should occur. Requirements E.g. order that requests monthly lab tests, fulfillment is sought for 1. Comments 32 bit number; for values larger than this, use decimal Data type positiveInt Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: .repeatNumber
period	I	0..1	Period	There are no (further) constraints on this element Element id Task.restriction.period Short description When fulfillment sought Definition Over what time-period is fulfillment sought. Requirements E.g. order that authorizes 1 year's services. Fulfillment is sought for next 3 months. Comments Note that period.high is the due date representing the time by which the task should be completed. 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 value than end `start.hasValue().not() or end.hasValue().not() or (start <= end)` Mappings rim: n/a v2: DR rim: IVL<TS>[lowClosed="true" and highClosed="true"] or URG<TS>[lowClosed="true" and highClosed="true"] rim: .effectiveTime(IVL<TS>)
recipient	I	0..*	Reference(Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Group \| Organization)	There are no (further) constraints on this element Element id Task.restriction.recipient Short description For whom is fulfillment sought? Definition For requests that are targeted to more than on potential recipient/target, for whom is fulfillment sought? Comments References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (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(Patient \| Practitioner \| PractitionerRole \| RelatedPerson \| Group \| 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.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))` Mappings rim: n/a rim: The target of a resource reference is a RIM entry point (Act, Role, or Entity) rim: .participation[typeCode=SBJ].role
input		0..*	BackboneElement	There are no (further) constraints on this element Element id Task.input Short description Information used to perform task Alternate names Supporting Information Definition Additional information that may be needed in the execution of the task. Requirements Resources and data used to perform the task. This data is used in the business logic of task execution, and is stored separately because it varies between workflows. 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 rim: ???
id		0..1	string	There are no (further) constraints on this element Element id Task.input.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 Task.input.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 manageable, 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 Task.input.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 manageable, 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
type		1..1	CodeableConcept	There are no (further) constraints on this element Element id Task.input.type Short description Label for the input Alternate names Name Definition A code or description indicating how the input is intended to be used as part of the task execution. Requirements Inputs are named to enable task automation to bind data and pass it from one task to the next. Comments If referencing a BPMN workflow or Protocol, the "system" is the URL for the workflow definition and the code is the "name" of the required input. Data type CodeableConcept Binding Codes to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Comparison source", "Applicable consent", "Concomitent Medications", etc. (unbound) (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 rim: ???
value[x]		1..1		There are no (further) constraints on this element Element id Task.input.value[x] Short description Content to use in performing the task Definition The value of the input parameter as a basic type. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: ???
valueBase64Binary			base64Binary	There are no (further) constraints on this element Data type base64Binary
valueBoolean			boolean	There are no (further) constraints on this element Data type boolean
valueCanonical			canonical()	There are no (further) constraints on this element Data type canonical()
valueCode			code	There are no (further) constraints on this element Data type code
valueDate			date	There are no (further) constraints on this element Data type date
valueDateTime			dateTime	There are no (further) constraints on this element Data type dateTime
valueDecimal			decimal	There are no (further) constraints on this element Data type decimal
valueId			id	There are no (further) constraints on this element Data type id
valueInstant			instant	There are no (further) constraints on this element Data type instant
valueInteger			integer	There are no (further) constraints on this element Data type integer
valueMarkdown			markdown	There are no (further) constraints on this element Data type markdown
valueOid			oid	There are no (further) constraints on this element Data type oid
valuePositiveInt			positiveInt	There are no (further) constraints on this element Data type positiveInt
valueString			string	There are no (further) constraints on this element Data type string
valueTime			time	There are no (further) constraints on this element Data type time
valueUnsignedInt			unsignedInt	There are no (further) constraints on this element Data type unsignedInt
valueUri			uri	There are no (further) constraints on this element Data type uri
valueUrl			url	There are no (further) constraints on this element Data type url
valueUuid			uuid	There are no (further) constraints on this element Data type uuid
valueAddress			Address	There are no (further) constraints on this element Data type Address
valueAge			Age	There are no (further) constraints on this element Data type Age
valueAnnotation			Annotation	There are no (further) constraints on this element Data type Annotation
valueAttachment			Attachment	There are no (further) constraints on this element Data type Attachment
valueCodeableConcept			CodeableConcept	There are no (further) constraints on this element Data type CodeableConcept
valueCoding			Coding	There are no (further) constraints on this element Data type Coding
valueContactPoint			ContactPoint	There are no (further) constraints on this element Data type ContactPoint
valueCount			Count	There are no (further) constraints on this element Data type Count
valueDistance			Distance	There are no (further) constraints on this element Data type Distance
valueDuration			Duration	There are no (further) constraints on this element Data type Duration
valueHumanName			HumanName	There are no (further) constraints on this element Data type HumanName
valueIdentifier			Identifier	There are no (further) constraints on this element Data type Identifier
valueMoney			Money	There are no (further) constraints on this element Data type Money
valuePeriod			Period	There are no (further) constraints on this element Data type Period
valueQuantity			Quantity	There are no (further) constraints on this element Data type Quantity
valueRange			Range	There are no (further) constraints on this element Data type Range
valueRatio			Ratio	There are no (further) constraints on this element Data type Ratio
valueSampledData			SampledData	There are no (further) constraints on this element Data type SampledData
valueSignature			Signature	There are no (further) constraints on this element Data type Signature
valueTiming			Timing	There are no (further) constraints on this element Data type Timing
valueContactDetail			ContactDetail	There are no (further) constraints on this element Data type ContactDetail
valueContributor			Contributor	There are no (further) constraints on this element Data type Contributor
valueDataRequirement			DataRequirement	There are no (further) constraints on this element Data type DataRequirement
valueExpression			Expression	There are no (further) constraints on this element Data type Expression
valueParameterDefinition			ParameterDefinition	There are no (further) constraints on this element Data type ParameterDefinition
valueRelatedArtifact			RelatedArtifact	There are no (further) constraints on this element Data type RelatedArtifact
valueTriggerDefinition			TriggerDefinition	There are no (further) constraints on this element Data type TriggerDefinition
valueUsageContext			UsageContext	There are no (further) constraints on this element Data type UsageContext
valueDosage			Dosage	There are no (further) constraints on this element Data type Dosage
valueMeta			Meta	There are no (further) constraints on this element Data type Meta
valueReference			Reference()	There are no (further) constraints on this element Data type Reference()
output	S	0..*	BackboneElement	There are no (further) constraints on this element Element id Task.output Short description Information produced as part of task Definition Outputs produced by the Task. Requirements Resources and data produced during the execution the task. This data is generated by the business logic of task execution, and is stored separately because it varies between workflows. 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 rim: ???
id		0..1	string	There are no (further) constraints on this element Element id Task.output.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 Task.output.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 manageable, 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 Task.output.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 manageable, 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
type		1..1	CodeableConcept	There are no (further) constraints on this element Element id Task.output.type Short description Label for output Alternate names Name Definition The name of the Output parameter. Requirements Outputs are named to enable task automation to bind data and pass it from one task to the next. 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 to identify types of input parameters. These will typically be specific to a particular workflow. E.g. "Identified issues", "Preliminary results", "Filler order", "Final results", etc. (unbound) (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 rim: ???
value[x]	S	1..1		There are no (further) constraints on this element Element id Task.output.value[x] Short description Result of output Definition The value of the Output parameter as a basic type. Requirements Task outputs can take any form. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: n/a rim: ???
valueReference			Reference(Communication)	Data type Reference(Communication)

Task		..
Task.extension		..
Task.extension	Extension	0..1
Task.basedOn	Reference(ServiceRequest)	1..1
Task.basedOn.reference		..
Task.basedOn.identifier		..
Task.basedOn.identifier.system		1..
Task.basedOn.identifier.value		1..
Task.status		..
Task.businessStatus		..
Task.businessStatus.extension	Extension	0..1
Task.intent		..
Task.code		..
Task.authoredOn		..
Task.owner	Reference(PractitionerRole)	..
Task.owner.reference		..
Task.owner.identifier		..
Task.owner.identifier.system		1..
Task.owner.identifier.value		1..
Task.output		..
Task.output.value[x]	Reference(Communication)	..

{
    "resourceType": "StructureDefinition",
    "id": "CA-eReC-Task",
    "url": "http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-Task",
    "version": "1.0.0",
    "name": "Task",
    "title": "Task",
    "status": "draft",
    "description": "A task resource describes an activity that can be performed and tracks the state of completion of that activity. It is a representation that an activity should be or has been initiated, and eventually, represents the successful or unsuccessful completion of that activity.",
    "fhirVersion": "4.0.1",
    "kind": "resource",
    "abstract": false,
    "type": "Task",
    "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Task",
    "derivation": "constraint",
    "differential": {
        "element":  [
            {
                "id": "Task.extension",
                "path": "Task.extension",
                "slicing": {
                    "discriminator":  [
                        {
                            "type": "value",
                            "path": "url"
                        }
                    ],
                    "ordered": false,
                    "rules": "open"
                }
            },
            {
                "id": "Task.extension:PatientNeedsToBeSeen",
                "path": "Task.extension",
                "sliceName": "PatientNeedsToBeSeen",
                "comment": "Used to support the eConsult use case where a patient is referred to a care provider. Used for when the care provider responds with an eConsult rather than accept the referral, but the patient wants a referral anyway.",
                "min": 0,
                "max": "1",
                "type":  [
                    {
                        "code": "Extension",
                        "profile":  [
                            "http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-patient-needs-to-be-seen-EXT"
                        ]
                    }
                ]
            },
            {
                "id": "Task.basedOn",
                "path": "Task.basedOn",
                "min": 1,
                "max": "1",
                "type":  [
                    {
                        "code": "Reference",
                        "targetProfile":  [
                            "http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-ServiceRequest"
                        ],
                        "aggregation":  [
                            "referenced"
                        ]
                    }
                ],
                "mustSupport": true
            },
            {
                "id": "Task.basedOn.reference",
                "path": "Task.basedOn.reference",
                "mustSupport": true
            },
            {
                "id": "Task.basedOn.identifier",
                "path": "Task.basedOn.identifier",
                "mustSupport": true
            },
            {
                "id": "Task.basedOn.identifier.system",
                "path": "Task.basedOn.identifier.system",
                "min": 1,
                "mustSupport": true
            },
            {
                "id": "Task.basedOn.identifier.value",
                "path": "Task.basedOn.identifier.value",
                "min": 1,
                "mustSupport": true
            },
            {
                "id": "Task.status",
                "path": "Task.status",
                "mustSupport": true
            },
            {
                "id": "Task.businessStatus",
                "path": "Task.businessStatus",
                "mustSupport": true,
                "binding": {
                    "strength": "extensible",
                    "valueSet": "http://fhir.infoway-inforoute.ca/io/CA-eReC/ValueSet/task-business-status"
                }
            },
            {
                "id": "Task.businessStatus.extension:StatusReason",
                "path": "Task.businessStatus.extension",
                "sliceName": "StatusReason",
                "min": 0,
                "max": "1",
                "type":  [
                    {
                        "code": "Extension",
                        "profile":  [
                            "http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-task-business-status-reason-EXT"
                        ]
                    }
                ],
                "mustSupport": true
            },
            {
                "id": "Task.intent",
                "path": "Task.intent",
                "patternCode": "proposal",
                "mustSupport": true
            },
            {
                "id": "Task.code",
                "path": "Task.code",
                "comment": "-",
                "mustSupport": true,
                "binding": {
                    "strength": "extensible",
                    "valueSet": "http://fhir.infoway-inforoute.ca/io/CA-eReC/ValueSet/task-code"
                }
            },
            {
                "id": "Task.authoredOn",
                "path": "Task.authoredOn",
                "mustSupport": true
            },
            {
                "id": "Task.owner",
                "path": "Task.owner",
                "type":  [
                    {
                        "code": "Reference",
                        "targetProfile":  [
                            "http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-PractitionerRole"
                        ]
                    }
                ],
                "mustSupport": true
            },
            {
                "id": "Task.owner.reference",
                "path": "Task.owner.reference",
                "mustSupport": true
            },
            {
                "id": "Task.owner.identifier",
                "path": "Task.owner.identifier",
                "mustSupport": true
            },
            {
                "id": "Task.owner.identifier.system",
                "path": "Task.owner.identifier.system",
                "min": 1,
                "mustSupport": true
            },
            {
                "id": "Task.owner.identifier.value",
                "path": "Task.owner.identifier.value",
                "min": 1,
                "mustSupport": true
            },
            {
                "id": "Task.output",
                "path": "Task.output",
                "mustSupport": true
            },
            {
                "id": "Task.output.value[x]",
                "path": "Task.output.value[x]",
                "type":  [
                    {
                        "code": "Reference",
                        "targetProfile":  [
                            "http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/CA-eReC-Communication"
                        ]
                    }
                ],
                "mustSupport": true
            }
        ]
    }
}

Usage

The Task resource is used as follows in this IG:

a "Process Request" Task ("Task.code": "process-request") SHALL be used by a Target System to track and communicate the status of a referral request to the Source System
a "Process Request Consult" Task ("Task.code": "process-request-consult") SHALL be used by a Target System to track and communicate the status of a consult request to the Source System

Each Task SHALL reference the ServiceRequest it is basedOn.

Notes

.id

used to uniquely identify the resource
if a persistent identity for the resource is not available to use when constructing a message Bundle for transmission via Direct Messaging, a UUID SHOULD be used in this element (with a corresponding value in Bundle.entry.fullUrl)

extension:PatientNeedsToBeSeen

Used in the Ontario iGuide to support the eConsult use case where a patient is referred to a care provider, the care provider responds with an eConsult rather than accept the referral, but the patient wants a referral anyway.

.basedOn

used to associate the Task with the ServiceRequest being performed
SHALL be populated with a reference to the ServiceRequest being performed
if the Task is being transmitted via messaging, this element SHALL either:
- .reference a resource included in the message as a Bundle.entry, or
- include an .identifier previously known to both systems

.status

for a "Process Request" Task, used to track the status of the ServiceRequest being performed as work progresses through to completion
for a "Request for Information" Task, used to track the status of the request for information

.businessStatus

used to convey the business status of the Task, which can be different from the .status. It can be more finegrained and is implementation-specific.

.businessStatus.extension:StatusReason

provides a coded reason for the .businessStatus

.intent

only "proposal" SHALL be supported
"plan" and "order" MAY be populated, and systems that do not understand "plan" or "order" codes will treat the value as "proposal"

.code

identifies the type of task
SHALL always be populated
- with "process-request" for a "Process Request" Task
- with "process-request-consult" for a "Process Request" eConsult Task

.authoredOn

indicates the dateTime that the eReferral was received
usually the same as ServiceRequest.authoredOn, except in cases when ServiceRequest.authoredOn is used to record that a request was signed by the requester before the transmission took place

.lastModified

indicates the dateTime when an update of note/significance was made to the referral (i.e., related resources such as ServiceRequest, patient, Task, Appointment, etc...)

.owner

a reference to the PractitionerRole responsible for handling the referral
if the Task is being transmitted via messaging, this element SHALL either:
- .reference a resource included in the message as a Bundle.entry, or
- include an .identifier previously known to both systems

.output

MAY to used to provide the outcome of a Referral
SHALL contain a reference to Communication when an eConsult is provided by a specialist