{
"description": "This cross-version extension represents Observation.subject from http://hl7.org/fhir/StructureDefinition/Observation|4.3.0 for use in FHIR R4.",
"_filename": "StructureDefinition-ext-R4B-Observation.subject.json",
"package_name": "hl7.fhir.uv.xver",
"date": "2025-09-01T22:36:53.558352+10:00",
"derivation": "constraint",
"publisher": "FHIR Infrastructure",
"fhirVersion": "4.0.1",
"jurisdiction": [ {
"coding": [ {
"code": "001",
"system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
"display": "World"
} ]
} ],
"name": "Ext_R4B_Observation_subject",
"mapping": [ {
"uri": "http://hl7.org/v3",
"name": "RIM Mapping",
"identity": "rim"
} ],
"abstract": false,
"type": "Extension",
"experimental": "false",
"resourceType": "StructureDefinition",
"title": "Cross-version Extension for R4B.Observation.subject for use in FHIR R4",
"package_version": "r4b.r4-0.0.1-snapshot-2",
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
"valueCode": "fhir"
}, {
"url": "http://hl7.org/fhir/StructureDefinition/package-source",
"extension": [ {
"url": "packageId",
"valueId": "hl7.fhir.uv.xver-r4b.r4"
}, {
"url": "version",
"valueString": "0.0.1-snapshot-2"
} ]
}, {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
"valueInteger": 0,
"_valueInteger": {
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
"valueCanonical": "http://hl7.org/fhir/4.3/ImplementationGuide/hl7.fhir.uv.xver-r4b.r4"
} ]
}
}, {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
"valueCode": "trial-use",
"_valueCode": {
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
"valueCanonical": "http://hl7.org/fhir/4.3/ImplementationGuide/hl7.fhir.uv.xver-r4b.r4"
} ]
}
} ],
"snapshot": {
"element": [ {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
}, {
"key": "ext-1",
"human": "Must have either extensions or value[x], not both",
"xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
"source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1",
"severity": "error",
"expression": "extension.exists() != value.exists()"
} ],
"path": "Extension",
"min": 0,
"definition": "The patient, or group of patients, location, or device this observation is about and into whose record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the `focus` element or the `code` itself specifies the actual focus of the observation.",
"isModifier": false,
"short": "Who and/or what the observation is about",
"max": "1",
"id": "Extension",
"condition": [ "ele-1" ],
"comment": "`Observation.subject` maps to R4 `Observation.subject`. Type `Reference(http://hl7.org/fhir/StructureDefinition/Organization)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Procedure)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Practitioner)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Medication)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Substance)` has no mapping So is mapped as SourceIsBroaderThanTarget.",
"base": {
"max": "*",
"min": 0,
"path": "Extension"
}
}, {
"path": "Extension.id",
"min": 0,
"definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"isModifier": false,
"short": "Unique id for inter-element referencing",
"mapping": [ {
"map": "n/a",
"identity": "rim"
} ],
"type": [ {
"code": "http://hl7.org/fhirpath/System.String",
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
"valueUrl": "string"
} ]
} ],
"representation": [ "xmlAttr" ],
"max": "1",
"id": "Extension.id",
"base": {
"max": "1",
"min": 0,
"path": "Element.id"
},
"isSummary": false
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
}, {
"key": "ext-1",
"human": "Must have either extensions or value[x], not both",
"xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
"source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1",
"severity": "error",
"expression": "extension.exists() != value.exists()"
} ],
"path": "Extension.extension",
"min": 0,
"definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
"isModifier": false,
"short": "Additional content defined by implementations",
"mapping": [ {
"map": "n/a",
"identity": "rim"
} ],
"slicing": {
"rules": "open",
"description": "Extensions are always sliced by (at least) url",
"discriminator": [ {
"path": "url",
"type": "value"
} ]
},
"type": [ {
"code": "Extension"
} ],
"alias": [ "extensions", "user content" ],
"max": "*",
"id": "Extension.extension",
"comment": "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.",
"base": {
"max": "*",
"min": 0,
"path": "Element.extension"
},
"isSummary": false
}, {
"path": "Extension.url",
"min": 1,
"definition": "Source of the definition for the extension code - a logical name or a URL.",
"isModifier": false,
"short": "identifies the meaning of the extension",
"fixedUri": "http://hl7.org/fhir/4.3/StructureDefinition/extension-Observation.subject",
"mapping": [ {
"map": "N/A",
"identity": "rim"
} ],
"type": [ {
"code": "http://hl7.org/fhirpath/System.String",
"extension": [ {
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
"valueUrl": "uri"
} ]
} ],
"representation": [ "xmlAttr" ],
"max": "1",
"id": "Extension.url",
"comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
"base": {
"max": "1",
"min": 1,
"path": "Extension.url"
},
"isSummary": false
}, {
"constraint": [ {
"key": "ele-1",
"human": "All FHIR elements must have a @value or children",
"xpath": "@value|f:*|h:div",
"source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1",
"severity": "error",
"expression": "hasValue() or (children().count() > id.count())"
} ],
"path": "Extension.value[x]",
"min": 0,
"definition": "The patient, or group of patients, location, or device this observation is about and into whose record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the `focus` element or the `code` itself specifies the actual focus of the observation.",
"isModifier": false,
"short": "Who and/or what the observation is about",
"mapping": [ {
"map": "N/A",
"identity": "rim"
} ],
"type": [ {
"code": "Reference"
} ],
"max": "1",
"id": "Extension.value[x]",
"comment": "`Observation.subject` maps to R4 `Observation.subject`. Type `Reference(http://hl7.org/fhir/StructureDefinition/Organization)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Procedure)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Practitioner)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Medication)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Substance)` has no mapping So is mapped as SourceIsBroaderThanTarget.",
"base": {
"max": "1",
"min": 0,
"path": "Extension.value[x]"
},
"isSummary": false
} ],
"extension": [ {
"url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
"valueString": "4.0.1"
} ]
},
"status": "active",
"id": "7649d164-eb82-4a1a-9bb5-da02f7f0bd7c",
"kind": "complex-type",
"url": "http://hl7.org/fhir/4.3/StructureDefinition/extension-Observation.subject",
"context": [ {
"type": "element",
"expression": "Observation.subject"
} ],
"version": "0.0.1-snapshot-2",
"differential": {
"element": [ {
"id": "Extension",
"max": "1",
"min": 0,
"base": {
"max": "*",
"min": 0,
"path": "Extension"
},
"path": "Extension",
"short": "Who and/or what the observation is about",
"comment": "`Observation.subject` maps to R4 `Observation.subject`. Type `Reference(http://hl7.org/fhir/StructureDefinition/Organization)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Procedure)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Practitioner)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Medication)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Substance)` has no mapping So is mapped as SourceIsBroaderThanTarget.",
"definition": "The patient, or group of patients, location, or device this observation is about and into whose record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the `focus` element or the `code` itself specifies the actual focus of the observation."
}, {
"id": "Extension.url",
"max": "1",
"min": 1,
"base": {
"max": "1",
"min": 1,
"path": "Extension.url"
},
"path": "Extension.url",
"fixedUri": "http://hl7.org/fhir/4.3/StructureDefinition/extension-Observation.subject"
}, {
"id": "Extension.value[x]",
"base": {
"max": "1",
"min": 0,
"path": "Extension.value[x]"
},
"path": "Extension.value[x]",
"type": [ {
"code": "Reference"
} ],
"short": "Who and/or what the observation is about",
"comment": "`Observation.subject` maps to R4 `Observation.subject`. Type `Reference(http://hl7.org/fhir/StructureDefinition/Organization)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Procedure)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Practitioner)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Medication)` has no mapping Type `Reference(http://hl7.org/fhir/StructureDefinition/Substance)` has no mapping So is mapped as SourceIsBroaderThanTarget.",
"definition": "The patient, or group of patients, location, or device this observation is about and into whose record the observation is placed. If the actual focus of the observation is different from the subject (or a sample of, part, or region of the subject), the `focus` element or the `code` itself specifies the actual focus of the observation."
} ]
},
"contact": [ {
"name": "FHIR Infrastructure",
"telecom": [ {
"value": "http://www.hl7.org/Special/committees/fiwg",
"system": "url"
} ]
} ],
"baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
}