description: Patient age measure and unit package_name: ee.fhir.base derivation: constraint name: ExtensionEEBasePatientAge type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'https://fhir.ee/base/StructureDefinition/ee-patient-age'} type: uri index: 1 value: choices: [valueAge] index: 3 valueAge: {type: Age, choiceOf: value, index: 4} value[x]: elements: value: {index: 5} unit: {index: 6} code: {index: 7} required: [code, unit, value] package_version: 1.1.3 extensions: {} class: extension kind: complex-type url: https://fhir.ee/base/StructureDefinition/ee-patient-age base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.1.3