Singapore Core Data for Interoperability (SGCDI)

AllergyIntolerance

This resource will be used to store the clinical assessment of an allergy or intolerance.

Structure

AllergyIntolerance	C		AllergyIntolerance	There are no (further) constraints on this element Element id AllergyIntolerance Short description Allergy or Intolerance (generally: Risk of adverse reaction to a substance) Alternate names Allergy, Intolerance, Adverse Reaction Definition Risk of harmful or undesirable physiological response which is specific to an individual and associated with exposure to a substance. Comments Substances include, but are not limited to: a therapeutic substance administered correctly at an appropriate dosage for the individual; food; material derived from plants or animals; or venom from insect stings. Data type AllergyIntolerance Constraints dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources `contained.contained.empty()` dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource `contained.where((('#'+id in (%resource.descendants().reference \| %resource.descendants().ofType(canonical) \| %resource.descendants().ofType(uri) \| %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()` dom-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-5: If a resource is contained in another resource, it SHALL NOT have a security label `contained.meta.security.empty()` dom-6: A resource should have narrative for robust management text.`div`.exists() Mappings rim: Entity, Role, or Act,Observation[classCode=OBS, moodCode=EVN] w5: clinical.general
id	Σ	0..1	id	There are no (further) constraints on this element Element id AllergyIntolerance.id Short description Logical id of this artifact Definition The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes. Comments Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case. Data type id
meta	Σ	0..1	Meta	There are no (further) constraints on this element Element id AllergyIntolerance.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())`
implicitRules	Σ ?!	0..1	uri	There are no (further) constraints on this element Element id AllergyIntolerance.implicitRules Short description A set of rules under which this content was created Definition A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc. Comments Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of its narrative along with other profiles, value sets, etc. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
language		0..1	codeBinding	There are no (further) constraints on this element Element id AllergyIntolerance.language Short description Language of the resource content Definition The base language in which the resource is written. Comments Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute). Data type code Binding IETF language tag for a human language AllLanguages (required) Additional bindings CommonLanguages (starter) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())`
text	C	0..1	Narrative	There are no (further) constraints on this element Element id AllergyIntolerance.text Short description Text summary of the resource, for human interpretation Alternate names narrative, html, xhtml, display Definition A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety. Comments Contained resources do not have a narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later. Data type Narrative Conditions The cardinality or value of this element may be affected by these constraints: dom-6 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: Act.text?
contained	C	0..*	Resource	There are no (further) constraints on this element Element id AllergyIntolerance.contained Short description Contained, inline Resources Alternate names inline resources, anonymous resources, contained resources Definition These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning. Comments This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags in their meta elements, but SHALL NOT have security labels. Data type Resource Conditions The cardinality or value of this element may be affected by these constraints: dom-2, dom-4, dom-3, dom-5 Mappings rim: N/A
extension	C	0..*	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension 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
modifierExtension	Σ ?! C	0..*	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.modifierExtension Short description Extensions that cannot be ignored Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Requirements Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension 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
identifier	Σ	1..1	Identifier	There are no (further) constraints on this element Element id AllergyIntolerance.identifier Short description External ids for this item Definition Business identifiers assigned to this AllergyIntolerance by the performer or other systems which remain constant as the resource is updated and propagates from server to server. Requirements Allows identification of the AllergyIntolerance as it is known by various participating systems and in a way that remains consistent across servers. Comments This is a business identifier, not a resource identifier (see discussion). It is best practice for the identifier to only appear on a single resource instance, however business practices may occasionally dictate that multiple resource instances with the same identifier can exist - possibly even with different resource types. For example, multiple Patient and a Person resource instance might share the same social insurance number. Data type Identifier Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.identifier v2: IAM-7 rim: id
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.identifier.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
use	Σ ?!	0..0	codeBinding	There are no (further) constraints on this element Element id AllergyIntolerance.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 v2: N/A rim: Role.code or implied by context
type	Σ	0..0	CodeableConceptBinding	There are no (further) constraints on this element Element id AllergyIntolerance.identifier.type Short description Description of identifier Definition A coded type for the identifier that can be used to determine which identifier to use for a specific purpose. Requirements Allows users to make use of identifiers when the identifier system is not known. Comments This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type. Data type CodeableConcept Binding A coded type for an identifier that can be used to determine which identifier to use for a specific purpose. IdentifierTypeCodes (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CX.5 rim: Role.code or implied by context
system	Σ	1..1	uri	There are no (further) constraints on this element Element id AllergyIntolerance.identifier.system Short description The namespace for the identifier value Definition Establishes the namespace for the value - that is, an absolute URL that describes a set values that are unique. Requirements There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers. Comments Identifier.system is always case sensitive. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Examples General http://www.acme.com/identifiers/patient Mappings v2: CX.4 / EI-2-4 rim: II.root or Role.id.root servd: ./IdentifierType
value	Σ C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.identifier.value Short description The value that is unique Definition The portion of the identifier typically relevant to the user and which is unique within the context of the system. Comments If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the http://hl7.org/fhir/StructureDefinition/rendered-value). Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe. Data type string Conditions The cardinality or value of this element may be affected by these constraints: ident-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Examples General 123456 Mappings 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	0..0	Period	There are no (further) constraints on this element Element id AllergyIntolerance.identifier.period Short description Time period when id is/was valid for use Definition Time period during which identifier is/was valid for use. Data type Period Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CX.7 + CX.8 rim: Role.effectiveTime or implied by context servd: ./StartDate and ./EndDate
assigner	Σ	0..0	Reference(Organization)	There are no (further) constraints on this element Element id AllergyIntolerance.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())` Mappings 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
clinicalStatus	Σ ?!	1..1	CodeableConceptBinding	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus Short description active \| inactive \| resolved Definition The clinical status of the allergy or intolerance. Comments AllergyIntolerance.clinicalStatus should be present if verificationStatus is not entered-in-error and the AllergyIntolerance.code isn't negated (No Known Allergy, No Drug Allergy, No Food Allergy, No Latex Allergy). Refer to discussion if clinicalStatus is missing data. The data type is CodeableConcept because clinicalStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity. Data type CodeableConcept Binding The clinical status of the allergy or intolerance. AllergyIntoleranceClinicalStatusCodes (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.status rim: Observation ACT .inboundRelationship[typeCode=COMP].source[classCode=OBS, code="clinicalStatus", moodCode=EVN].value
id		0..1	id	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..*	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
coding	Σ	1..1	Coding	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.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 v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..1	id	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..*	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
system	Σ	1..1	uri	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ C	1..1	code	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Data type code Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Data type string Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..1	boolean	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.clinicalStatus.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 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
verificationStatus	Σ ?!	1..1	CodeableConceptBinding	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus Short description unconfirmed \| presumed \| confirmed \| refuted \| entered-in-error Definition Assertion about certainty associated with the propensity, or potential risk, of a reaction to the identified substance (including pharmaceutical product). The verification status pertains to the allergy or intolerance, itself, not to any specific AllergyIntolerance attribute. Comments The data type is CodeableConcept because verificationStatus has some clinical judgment involved, such that there might need to be more specificity than the required FHIR value set allows. For example, a SNOMED coding might allow for additional specificity. Data type CodeableConcept Binding Assertion about certainty associated with a propensity, or potential risk, of a reaction to the identified substance. AllergyIntoleranceVerificationStatus (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.status rim: Observation ACT .inboundRelationship[typeCode=COMP].source[classCode=OBS, code="verificationStatus", moodCode=EVN].value
id		0..1	id	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..*	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
coding	Σ	1..1	Coding	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.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 v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..1	id	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..*	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
system	Σ	1..1	uri	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ C	1..1	code	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Data type code Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Data type string Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..1	boolean	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.verificationStatus.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 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
type	Σ	0..1	CodeableConceptBinding	There are no (further) constraints on this element Element id AllergyIntolerance.type Short description allergy \| intolerance - Underlying mechanism (if known) Alternate names Category, Class Definition Identification of the underlying physiological mechanism for the reaction risk. Comments Allergic (typically immune-mediated) reactions have been traditionally regarded as an indicator for potential escalation to significant future risk. Contemporary knowledge suggests that some reactions previously thought to be immune-mediated are, in fact, non-immune, but in some cases can still pose a life threatening risk. It is acknowledged that many clinicians might not be in a position to distinguish the mechanism of a particular reaction. Often the term "allergy" is used rather generically and may overlap with the use of "intolerance" - in practice the boundaries between these two concepts might not be well-defined or understood. This data element is included nevertheless, because many legacy systems have captured this attribute. Immunologic testing may provide supporting evidence for the basis of the reaction and the causative substance, but no tests are 100% sensitive or specific for sensitivity to a particular substance. If, as is commonly the case, it is unclear whether the reaction is due to an allergy or an intolerance, then the type element should be omitted from the resource. Data type CodeableConcept Binding Identification of the underlying physiological mechanism for a Reaction Risk. AllergyIntoleranceType (preferred) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.class v2: IAM-9 rim: code
id		0..1	id	There are no (further) constraints on this element Element id AllergyIntolerance.type.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..*	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.type.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
coding	Σ	1..1	Coding	There are no (further) constraints on this element Element id AllergyIntolerance.type.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 v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..1	id	There are no (further) constraints on this element Element id AllergyIntolerance.type.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..*	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.type.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
system	Σ	1..1	uri	There are no (further) constraints on this element Element id AllergyIntolerance.type.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.type.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ C	1..1	code	There are no (further) constraints on this element Element id AllergyIntolerance.type.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Data type code Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.type.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Data type string Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..1	boolean	There are no (further) constraints on this element Element id AllergyIntolerance.type.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.type.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 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
category	Σ	0..*	codeBinding	There are no (further) constraints on this element Element id AllergyIntolerance.category Short description food \| medication \| environment \| biologic Alternate names Category, Type, Reaction Type, Class Definition Category of the identified substance. Comments This data element has been included because it is currently being captured in some clinical systems. This data can be derived from the substance where coding systems are used, and is effectively redundant in that situation. When searching on category, consider the implications of AllergyIntolerance resources without a category. For example, when searching on category = medication, medication allergies that don't have a category valued will not be returned. Refer to search for more information on how to search category with a :missing modifier to get allergies that don't have a category. Additionally, category should be used with caution because category can be subjective based on the sender. Data type code Binding Category of an identified substance associated with allergies or intolerances. AllergyIntoleranceCategory (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.class v2: AL1-2 rim: value < IntoleranceValue (Agent)
criticality	Σ	0..1	codeBinding	There are no (further) constraints on this element Element id AllergyIntolerance.criticality Short description low \| high \| unable-to-assess Alternate names Severity, Seriousness, Contra-indication, Risk Definition Estimate of the potential clinical harm, or seriousness, of the reaction to the identified substance. Comments The default criticality value for any propensity to an adverse reaction should be 'Low Risk', indicating at the very least a relative contraindication to deliberate or voluntary exposure to the substance. 'High Risk' is flagged if the clinician has identified a propensity for a more serious or potentially life-threatening reaction, such as anaphylaxis, and implies an absolute contraindication to deliberate or voluntary exposure to the substance. If this element is missing, the criticality is unknown (though it may be known elsewhere). Systems that capture a severity at the condition level are actually representing the concept of criticality whereas the severity documented at the reaction level is representing the true reaction severity. Existing systems that are capturing both condition criticality and reaction severity may use the term "severity" to represent both. Criticality is the worst it could be in the future (i.e. situation-agnostic) whereas severity is situation-dependent. Data type code Binding Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance. AllergyIntoleranceCriticality (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.grade v2: AL1-4 rim: inboundRelationship[typeCode=SUBJ].source[classCode=OBS, moodCode=EVN, code=SEV, value <= SeverityObservation (Severity Level)]
code	Σ	1..1	CodeableConcept	There are no (further) constraints on this element Element id AllergyIntolerance.code Short description Code that identifies the allergy or intolerance Alternate names Code Definition Code for an allergy or intolerance statement (either a positive or a negated/excluded statement). This may be a code for a substance or pharmaceutical product that is considered to be responsible for the adverse reaction risk (e.g., "Latex"), an allergy or intolerance condition (e.g., "Latex allergy"), or a negated/excluded code for a specific substance or class (e.g., "No latex allergy") or a general or categorical negated statement (e.g., "No known allergy", "No known drug allergies"). Note: the substance for a specific reaction may be different from the substance identified as the cause of the risk, but it must be consistent with it. For instance, it may be a more specific substance (e.g. a brand medication) or a composite product that includes the identified substance. It must be clinically safe to only process the 'code' and ignore the 'reaction.substance'. If a receiving system is unable to confirm that AllergyIntolerance.reaction.substance falls within the semantic scope of AllergyIntolerance.code, then the receiving system should ignore AllergyIntolerance.reaction.substance. Comments It is strongly recommended that this element be populated using a terminology, where possible. For example, some terminologies used include RxNorm, SNOMED CT, DM+D, NDFRT, ICD-9, IDC-10, UNII, and ATC. Plain text should only be used if there is no appropriate terminology available. Additional details can be specified in the text. When a substance or product code is specified for the 'code' element, the "default" semantic context is that this is a positive statement of an allergy or intolerance (depending on the value of the 'type' element, if present) condition to the specified substance/product. In the corresponding SNOMED CT allergy model, the specified substance/product is the target (destination) of the "Causative agent" relationship. The 'substanceExposureRisk' extension is available as a structured and more flexible alternative to the 'code' element for making positive or negative allergy or intolerance statements. This extension provides the capability to make "no known allergy" (or "no risk of adverse reaction") statements regarding any coded substance/product (including cases when a pre-coordinated "no allergy to x" concept for that substance/product does not exist). If the 'substanceExposureRisk' extension is present, the AllergyIntolerance.code element SHALL be omitted. Data type CodeableConcept Binding Type of the substance/product, allergy or intolerance condition, or negation/exclusion codes for reporting no known allergies. SubstanceProductAndConditionAndNegationCodes (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.what[x] v2: AL1-3 / IAM-3 rim: substance/product: .participation[typeCode=CAGNT].role[classCode=ADMM].player[classCode=MAT, determinerCode=KIND, code <= ExposureAgentEntityType] negated/excluded substance/product: .participation[typeCode=CAGNT, negationInd=true].role[classCode=ADMM].player[classCode=MAT, determinerCode=KIND, code <= ExposureAgentEntityType] positive or negated/excluded condition/situation: Observation.code=ASSERTION; Observation.value
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.code.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.code.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
coding	Σ	1..1	Coding	There are no (further) constraints on this element Element id AllergyIntolerance.code.coding Short description Code defined by a terminology system Definition A reference to a code defined by a terminology system. Requirements Allows for alternative encodings within a code system, and translations to other code systems. Comments Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true. Data type Coding Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.code.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.code.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
system	Σ	1..1	uriFixed Value	Element id AllergyIntolerance.code.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value https://fhir.synapxe.sg/CodeSystem/medication-list Mappings v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..0	string	There are no (further) constraints on this element Element id AllergyIntolerance.code.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ C	1..1	codeBinding	Element id AllergyIntolerance.code.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Data type code Binding MedicationListValueSet (required) Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.code.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Data type string Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..0	boolean	There are no (further) constraints on this element Element id AllergyIntolerance.code.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..0	string	There are no (further) constraints on this element Element id AllergyIntolerance.code.text Short description Plain text representation of the concept Definition A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user. Requirements The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source. Comments Very often the text is the same as a displayName of one of the codings. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings 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
patient	Σ	1..1	Reference(Patient)	Element id AllergyIntolerance.patient Short description Who the allergy or intolerance is for Alternate names Patient Definition The patient who has the allergy or intolerance. Data type Reference(Patient) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.subject[x] v2: (PID-3) rim: .participation[typeCode=SBJ].role[classCode=PAT]
id		0..1	id	There are no (further) constraints on this element Element id AllergyIntolerance.patient.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..*	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.patient.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
reference	Σ C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.patient.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 Conditions The cardinality or value of this element may be affected by these constraints: ref-2, ref-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: N/A
type	Σ	0..1	uriBinding	There are no (further) constraints on this element Element id AllergyIntolerance.patient.type Short description Type the reference refers to (e.g. "Patient") - must be a resource in resources Definition The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources). Comments This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference. Data type uri Binding Aa resource (or, for logical models, the URI of the logical model). ResourceType (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: N/A
identifier	Σ C	0..1	Identifier	There are no (further) constraints on this element Element id AllergyIntolerance.patient.identifier Short description Logical reference, when literal reference is not known Definition An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference. Comments When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation\|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any). This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension. Data type Identifier Conditions The cardinality or value of this element may be affected by these constraints: ref-2 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: .identifier
display	Σ C	0..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.patient.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 Conditions The cardinality or value of this element may be affected by these constraints: ref-2 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: N/A
encounter		0..0	Reference(Encounter)	There are no (further) constraints on this element Element id AllergyIntolerance.encounter Short description Encounter when the allergy or intolerance was asserted Definition The encounter when the allergy or intolerance was asserted. Data type Reference(Encounter) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.context rim: .inboundRelationship[typeCode=COMP].source[classCode=ENC, moodCode=EVN]
onset[x]		0..1		There are no (further) constraints on this element Element id AllergyIntolerance.onset[x] Short description When allergy or intolerance was identified Definition Estimated or actual date, date-time, or age when allergy or intolerance was identified. Comments Age is generally used when the patient reports an age at which the AllergyIntolerance was noted. Period is generally used to convey an imprecise onset that occurred within the time period. Range is generally used to convey an imprecise age range (e.g. 4 to 6 years old). Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.init rim: effectiveTime.low
onsetDateTime			dateTime	Data type dateTime
onsetAge			Age	Data type Age
onsetPeriod			Period	Data type Period
onsetString			string	Data type string
recordedDate		1..1	dateTime	There are no (further) constraints on this element Element id AllergyIntolerance.recordedDate Short description Date allergy or intolerance was first recorded Definition The recordedDate represents when this particular AllergyIntolerance record was created in the system, which is often a system-generated date. Comments When onset date is unknown, recordedDate can be used to establish if the allergy or intolerance was present on or before a given date. If the recordedDate is known and provided by a sending system, it is preferred that the receiving system preserve that recordedDate value. If the recordedDate is not provided by the sending system, the receipt timestamp is sometimes used as the recordedDate. Data type dateTime Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.recorded v2: IAM-13 rim: .participation[typeCode=AUT].time
participant	Σ	1..*	BackboneElement	There are no (further) constraints on this element Element id AllergyIntolerance.participant Short description Who or what participated in the activities related to the allergy or intolerance and how they were involved Definition Indicates who or what participated in the activities related to the allergy or intolerance and how they were involved. Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: .participation[typeCode=PRF]
id		0..0	string	There are no (further) constraints on this element Element id AllergyIntolerance.participant.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 Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.participant.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension 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
modifierExtension	Σ ?! C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.participant.modifierExtension Short description Extensions that cannot be ignored even if unrecognized Alternate names extensions, user content, modifiers Definition May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Requirements Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: N/A
function	Σ	1..1	CodeableConceptBinding	Element id AllergyIntolerance.participant.function Short description Type of involvement Definition Distinguishes the type of involvement of the actor in the activities related to the allergy or intolerance. Data type CodeableConcept Binding ParticipationRoleType (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: .participation.functionCode
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
coding	Σ	1..1	Coding	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.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 v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
system	Σ	1..1	uri	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..0	string	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ C	1..1	code	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Data type code Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Data type string Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..0	boolean	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..0	string	There are no (further) constraints on this element Element id AllergyIntolerance.participant.function.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 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
actor	Σ	1..1	Reference(Practitioner)	Element id AllergyIntolerance.participant.actor Short description Who or what participated in the activities related to the allergy or intolerance Definition Indicates who or what participated in the activities related to the allergy or intolerance. Data type Reference(Practitioner) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings w5: FiveWs.who rim: .player
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
reference	Σ C	0..0	string	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.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 Conditions The cardinality or value of this element may be affected by these constraints: ref-2, ref-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: N/A
type	Σ	1..1	uriBindingFixed Value	Element id AllergyIntolerance.participant.actor.type Short description Type the reference refers to (e.g. "Patient") - must be a resource in resources Definition The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources). Comments This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference. Data type uri Binding Aa resource (or, for logical models, the URI of the logical model). ResourceType (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Fixed value Practitioner Mappings rim: N/A
identifier	Σ C	1..1	Identifier	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.identifier Short description Logical reference, when literal reference is not known Definition An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference. Comments When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation\|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any). This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension. Data type Identifier Conditions The cardinality or value of this element may be affected by these constraints: ref-2 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: .identifier
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.identifier.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
use	Σ ?!	0..0	codeBinding	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.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 v2: N/A rim: Role.code or implied by context
type	Σ	0..0	CodeableConceptBinding	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.identifier.type Short description Description of identifier Definition A coded type for the identifier that can be used to determine which identifier to use for a specific purpose. Requirements Allows users to make use of identifiers when the identifier system is not known. Comments This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type. Data type CodeableConcept Binding A coded type for an identifier that can be used to determine which identifier to use for a specific purpose. IdentifierTypeCodes (extensible) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CX.5 rim: Role.code or implied by context
system	Σ	1..1	uri	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.identifier.system Short description The namespace for the identifier value Definition Establishes the namespace for the value - that is, an absolute URL that describes a set values that are unique. Requirements There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers. Comments Identifier.system is always case sensitive. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Examples General http://www.acme.com/identifiers/patient Mappings v2: CX.4 / EI-2-4 rim: II.root or Role.id.root servd: ./IdentifierType
value	Σ C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.identifier.value Short description The value that is unique Definition The portion of the identifier typically relevant to the user and which is unique within the context of the system. Comments If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the http://hl7.org/fhir/StructureDefinition/rendered-value). Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe. Data type string Conditions The cardinality or value of this element may be affected by these constraints: ident-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Examples General 123456 Mappings 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	0..0	Period	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.identifier.period Short description Time period when id is/was valid for use Definition Time period during which identifier is/was valid for use. Data type Period Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CX.7 + CX.8 rim: Role.effectiveTime or implied by context servd: ./StartDate and ./EndDate
assigner	Σ	0..0	Reference(Organization)	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.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())` Mappings 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 C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.participant.actor.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 Conditions The cardinality or value of this element may be affected by these constraints: ref-2 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: N/A
lastOccurrence		0..1	dateTime	There are no (further) constraints on this element Element id AllergyIntolerance.lastOccurrence Short description Date(/time) of last known occurrence of a reaction Definition Represents the date and/or time of the last known occurrence of a reaction event. Comments This date may be replicated by one of the Onset of Reaction dates. Where a textual representation of the date of last occurrence is required e.g. 'In Childhood, '10 years ago' the AllergyIntolerance.note element should be used. Data type dateTime Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: outBoundRelationship[typeCode=SUBJ].target[classCode=OBS, moodCode=EVN, code <= CommonClinicalObservationType, value <= ObservationValue (Reaction Type)].effectiveTime
note		0..0	Annotation	There are no (further) constraints on this element Element id AllergyIntolerance.note Short description Additional text not captured in other fields Definition Additional narrative about the propensity for the Adverse Reaction, not captured in other fields. Comments For example: including reason for flagging a seriousness of 'High Risk'; and instructions related to future exposure or administration of the substance, such as administration within an Intensive Care Unit or under corticosteroid cover. The notes should be related to an allergy or intolerance as a condition in general and not related to any particular episode of it. For episode notes and descriptions, use AllergyIntolerance.event.description and AllergyIntolerance.event.notes. Data type Annotation Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: subjectOf.observationEvent[code="annotation"].value
reaction		0..1	BackboneElement	There are no (further) constraints on this element Element id AllergyIntolerance.reaction Short description Adverse Reaction Events linked to exposure to substance Definition Details about each adverse reaction event linked to exposure to the identified substance. Data type BackboneElement Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: outBoundRelationship[typeCode=SUBJ].target[classCode=OBS, moodCode=EVN, code <= CommonClinicalObservationType, value <= ObservationValue (Reaction Type)]
id		0..0	string	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.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 Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension 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
modifierExtension	Σ ?! C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.modifierExtension Short description Extensions that cannot be ignored even if unrecognized Alternate names extensions, user content, modifiers Definition May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). Requirements Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` ext-1: Must have either extensions or value[x], not both `extension.exists() != value.exists()` Mappings rim: N/A
substance		0..0	CodeableConcept	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.substance Short description Specific substance or pharmaceutical product considered to be responsible for event Definition Identification of the specific substance (or pharmaceutical product) considered to be responsible for the Adverse Reaction event. Note: the substance for a specific reaction may be different from the substance identified as the cause of the risk, but it must be consistent with it. For instance, it may be a more specific substance (e.g. a brand medication) or a composite product that includes the identified substance. It must be clinically safe to only process the 'code' and ignore the 'reaction.substance'. If a receiving system is unable to confirm that AllergyIntolerance.reaction.substance falls within the semantic scope of AllergyIntolerance.code, then the receiving system should ignore AllergyIntolerance.reaction.substance. Comments Coding of the specific substance (or pharmaceutical product) with a terminology capable of triggering decision support should be used wherever possible. The 'code' element allows for the use of a specific substance or pharmaceutical product, or a group or class of substances. In the case of an allergy or intolerance to a class of substances, (for example, "penicillins"), the 'reaction.substance' element could be used to code the specific substance that was identified as having caused the reaction (for example, "amoxycillin"). Duplication of the value in the 'code' and 'reaction.substance' elements is acceptable when a specific substance has been recorded in 'code'. Data type CodeableConcept Binding Codes defining the type of the substance (including pharmaceutical products). SubstanceCode (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: outBoundRelationship[typeCode=SAS].target[classCode=SBADM, code <= ExposureCode].participation[typeCode=CSM].role[classCode=ADMM].player[classCode=MAT, determinerCode=KIND, code <= ExposureAgentEntityType]
manifestation		1..*	CodeableReference(Observation)	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation Short description Clinical symptoms/signs associated with the Event Alternate names Symptoms, Signs Definition Clinical symptoms and/or signs that are observed or associated with the adverse reaction event. Comments Manifestation can be expressed as a single word, phrase or brief description. For example: nausea, rash or no reaction. It is preferable that manifestation should be coded with a terminology, where possible. The values entered here may be used to display on an application screen as part of a list of adverse reactions, as recommended in the UK NHS CUI guidelines. Terminologies commonly used include, but are not limited to, SNOMED CT or ICD10. Data type CodeableReference(Observation) Binding Clinical symptoms and/or signs that are observed or associated with an Adverse Reaction Event. SNOMEDCTClinicalFindings (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: AL1-5 rim: code
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
concept	Σ	1..1	CodeableConcept	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept Short description Reference to a concept (by class) Definition A reference to a concept - e.g. the information is identified by its general class to the degree of precision found in the terminology. Data type CodeableConcept Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: N/A
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
coding	Σ	1..1	Coding	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.coding Short description Code defined by a terminology system Definition A reference to a code defined by a terminology system. Requirements Allows for alternative encodings within a code system, and translations to other code systems. Comments Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true. Data type Coding Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..1	id	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..*	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
system	Σ	1..1	uri	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ C	1..1	code	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Data type code Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Data type string Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..1	boolean	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.concept.text Short description Plain text representation of the concept Definition A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user. Requirements The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source. Comments Very often the text is the same as a displayName of one of the codings. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.9. But note many systems use CE.2 for this rim: ./originalText[mediaType/code="text/plain"]/data orim: fhir:CodeableConcept.text rdfs:subPropertyOf dt:CD.originalText
reference	Σ	0..0	Reference()	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.manifestation.reference Short description Reference to a resource (by instance) Definition A reference to a resource the provides exact details about the information being referenced. Data type Reference() Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: N/A
description		0..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.description Short description Description of the event as a whole Alternate names Narrative, Text Definition Text description about the reaction as a whole, including details of the manifestation if required. Comments Use the description to provide any details of a particular event of the occurred reaction such as circumstances, reaction specifics, what happened before/after. Information, related to the event, but not describing a particular care should be captured in the note field. For example: at the age of four, the patient was given penicillin for strep throat and subsequently developed severe hives. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: text
onset		0..1	dateTime	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.onset Short description Date(/time) when manifestations showed Definition Record of the date and/or time of the onset of the Reaction. Data type dateTime Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: AL1-6 rim: effectiveTime.low
severity		1..1	codeBinding	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.severity Short description mild \| moderate \| severe (of event as a whole) Definition Clinical assessment of the severity of the reaction event as a whole, potentially considering multiple different manifestations. Comments It is acknowledged that this assessment is very subjective. There may be some specific practice domains where objective scales have been applied. Objective scales can be included in this model as extensions. Data type code Binding Clinical assessment of the severity of a reaction event as a whole, potentially considering multiple different manifestations. AllergyIntoleranceSeverity (required) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: inboundRelationship[typeCode=SUBJ].source[classCode=OBS, moodCode=EVN, code=SEV, value <= SeverityObservation (Severity Level)]
exposureRoute		0..1	CodeableConcept	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute Short description How the subject was exposed to the substance Definition Identification of the route by which the subject was exposed to the substance. Comments Coding of the route of exposure with a terminology should be used wherever possible. Data type CodeableConcept Binding A coded concept describing the route or physiological path of exposure to a substance. SNOMEDCTRouteCodes (example) Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: outBoundRelationship[typeCode=SAS].target[classCode=SBADM, code <= ExposureCode].routeCode
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
coding	Σ	1..1	Coding	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.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 v2: CE.1-8, CE.10-22 rim: union(., ./translation) orim: fhir:CodeableConcept.coding rdfs:subPropertyOf dt:CD.coding
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.coding.id Short description Unique id for inter-element referencing Definition Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces. Data type id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.coding.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
system	Σ	1..1	uri	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.coding.system Short description Identity of the terminology system Definition The identification of the code system that defines the meaning of the symbol in the code. Requirements Need to be unambiguous about the source of the definition of the symbol. Comments The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should be an absolute reference to some definition that establishes the system clearly and unambiguously. Data type uri Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.3 rim:* ./codeSystem orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
version	Σ	0..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.coding.version Short description Version of the system - if relevant Definition The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged. Comments Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date. Data type string Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.7 rim:* ./codeSystemVersion orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion
code	Σ C	1..1	code	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.coding.code Short description Symbol in syntax defined by the system Definition A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination). Requirements Need to refer to a particular code in the system. Data type code Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.1 rim:* ./code orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
display	Σ C	1..1	string	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.coding.display Short description Representation defined by the system Definition A representation of the meaning of the code in the system, following the rules of the system. Requirements Need to be able to carry a human-readable meaning of the code for readers that do not know the system. Data type string Conditions The cardinality or value of this element may be affected by these constraints: cod-1 Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: CE.2 - but note this is not well followed rim:* CV.displayName orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
userSelected	Σ	0..0	boolean	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.coding.userSelected Short description If this coding was chosen directly by the user Definition Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays). Requirements This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing. Comments Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely. Data type boolean Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: Sometimes implied by being first rim: CD.codingRationale orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]
text	Σ	0..0	string	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.exposureRoute.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 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
note		0..*	Annotation	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.note Short description Text about event not captured in other fields Definition Additional text about the adverse reaction event not captured in other fields. Comments Use this field to record information indirectly related to a particular event and not captured in the description. For example: Clinical records are no longer available, recorded based on information provided to the patient by her mother and her mother is deceased. Data type Annotation Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings rim: subjectOf.observationEvent[code="annotation"].value
id		0..0	id	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.note.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 id Conditions The cardinality or value of this element may be affected by these constraints: ele-1 Mappings rim: n/a
extension	C	0..0	Extension	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.note.extension Short description Additional content defined by implementations Alternate names extensions, user content Definition May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Comments There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone. Data type Extension Slicing 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
author[x]	Σ	0..0		There are no (further) constraints on this element Element id AllergyIntolerance.reaction.note.author[x] Short description Individual responsible for the annotation Definition The individual responsible for making the annotation. Comments Organization is used when there's no need for specific attribution as to who made the comment. Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: N/A rim: Act.participant[typeCode=AUT].role
time	Σ	0..0	dateTime	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.note.time Short description When the annotation was made Definition Indicates when this particular annotation was made. Data type dateTime Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: N/A rim: Act.effectiveTime
text	Σ	1..1	markdown	There are no (further) constraints on this element Element id AllergyIntolerance.reaction.note.text Short description The annotation - text content (as markdown) Definition The text of the annotation in markdown format. Data type markdown Constraints ele-1: All FHIR elements must have a @value or children `hasValue() or (children().count() > id.count())` Mappings v2: N/A rim: Act.text

Terminologies

Path	Binding Strength	Value Set (Code System)	Description
AllergyIntolerance.language	required	http://hl7.org/fhir/ValueSet/all-languages\|5.0.0	IETF language tag for a human language
AllergyIntolerance.clinicalStatus	required	http://hl7.org/fhir/ValueSet/allergyintolerance-clinical\|5.0.0	The clinical status of the allergy or intolerance.
AllergyIntolerance.verificationStatus	required	http://hl7.org/fhir/ValueSet/allergyintolerance-verification\|5.0.0	Assertion about certainty associated with a propensity, or potential risk, of a reaction to the identified substance.
AllergyIntolerance.type	preferred	http://hl7.org/fhir/ValueSet/allergy-intolerance-type	Identification of the underlying physiological mechanism for a Reaction Risk.
AllergyIntolerance.category	required	http://hl7.org/fhir/ValueSet/allergy-intolerance-category\|5.0.0	Category of an identified substance associated with allergies or intolerances.
AllergyIntolerance.criticality	required	http://hl7.org/fhir/ValueSet/allergy-intolerance-criticality\|5.0.0	Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance.
AllergyIntolerance.code	example	http://hl7.org/fhir/ValueSet/allergyintolerance-code	Type of the substance/product, allergy or intolerance condition, or negation/exclusion codes for reporting no known allergies.
AllergyIntolerance.code.coding.code	required	https://fhir.synapxe.sg/ValueSet/medication-list
AllergyIntolerance.patient.type	extensible	http://hl7.org/fhir/ValueSet/resource-types	Aa resource (or, for logical models, the URI of the logical model).
AllergyIntolerance.participant.function	required	http://hl7.org/fhir/ValueSet/participation-role-type
AllergyIntolerance.participant.actor.type	extensible	http://hl7.org/fhir/ValueSet/resource-types	Aa resource (or, for logical models, the URI of the logical model).
AllergyIntolerance.reaction.manifestation	example	http://hl7.org/fhir/ValueSet/clinical-findings	Clinical symptoms and/or signs that are observed or associated with an Adverse Reaction Event.
AllergyIntolerance.reaction.severity	required	http://hl7.org/fhir/ValueSet/reaction-event-severity\|5.0.0	Clinical assessment of the severity of a reaction event as a whole, potentially considering multiple different manifestations.
AllergyIntolerance.reaction.exposureRoute	example	http://hl7.org/fhir/ValueSet/route-codes	A coded concept describing the route or physiological path of exposure to a substance.