description: This cross-version extension represents AllergyIntolerance.clinicalStatus from http://hl7.org/fhir/StructureDefinition/AllergyIntolerance|3.0.2 for use in FHIR R4. package_name: hl7.fhir.uv.xver-r3.r4 derivation: constraint name: ext_R3_AllergyIntolerance_clinicalStatus type: Extension elements: value: base: {path: 'Extension.value[x]'} short: active | inactive | resolved choices: [valueCode] index: 1 valueCode: base: {path: 'Extension.value[x]'} type: code short: active | inactive | resolved choiceOf: value index: 2 url: pattern: {type: uri, value: 'http://hl7.org/fhir/3.0/StructureDefinition/extension-AllergyIntolerance.clinicalStatus'} type: uri index: 3 package_version: 0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/3.0/StructureDefinition/extension-AllergyIntolerance.clinicalStatus base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]