description: null package_name: uk.nhsdigital.r4.test derivation: constraint name: CodeableReferenceBackport type: Extension elements: url: pattern: {type: Uri, value: 'https://fhir.nhs.uk/StructureDefinition/CodeableReference'} index: 0 value: choices: [valueCodeableConcept] index: 2 valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 3} package_version: 2.8.8-prerelease class: extension kind: complex-type url: https://fhir.nhs.uk/StructureDefinition/CodeableReference base: http://hl7.org/fhir/StructureDefinition/Extension version: null