description: null package_name: fhir.r4.wales derivation: constraint name: ExtensionDataStandardsWalesUECAttendanceCategory type: Extension elements: url: pattern: {type: Uri, value: 'https://fhir.nhs.wales/StructureDefinition/Extension-DataStandardsWales-UEC-AttendanceCategory'} index: 0 value: choices: [valueCodeableConcept] index: 2 valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 3} package_version: 2.3.0 class: extension kind: complex-type url: https://fhir.nhs.wales/StructureDefinition/Extension-DataStandardsWales-UEC-AttendanceCategory base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1