description: 'R4: `UsageContext.value[x]` additional types (Reference(http://hl7.org/fhir/StructureDefinition/PlanDefinition), Reference(http://hl7.org/fhir/StructureDefinition/ResearchStudy), Reference(http://hl7.org/fhir/StructureDefinition/InsurancePlan), Reference(http://hl7.org/fhir/StructureDefinition/HealthcareService), Reference(http://hl7.org/fhir/StructureDefinition/Group), Reference(http://hl7.org/fhir/StructureDefinition/Location), Reference(http://hl7.org/fhir/StructureDefinition/Organization))' package_name: hl7.fhir.uv.xver-r4.r3 derivation: constraint name: ExtensionUsageContext_Value type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/4.0/StructureDefinition/extension-UsageContext.value'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: Value that defines the context choices: [valueReference, valueReference, valueReference, valueReference, valueReference, valueReference, valueReference, valueReference, valueReference, valueReference, valueReference, valueReference, valueReference, valueReference] index: 2 valueReference: short: Value that defines the context refers: ['http://hl7.org/fhir/4.0/StructureDefinition/profile-PlanDefinition|0.1.0'] type: Reference base: {max: '1', min: 0, path: 'Extension.value[x]'} choiceOf: value index: 3 package_version: 0.1.0 class: extension kind: complex-type url: http://hl7.org/fhir/4.0/StructureDefinition/extension-UsageContext.value base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.1.0 required: [url, valueReference, value]