description: This carries an address identifier which will be included in an address. package_name: fhir.r4.ukcore.stu3.currentbuild derivation: constraint name: ExtensionUKCoreAddressKey type: Extension elements: extension: array: true min: 2 index: 0 slicing: slices: type: match: {} schema: short: Address Key Type _required: true index: 1 elements: url: pattern: {type: uri, value: type} type: uri index: 2 value: short: Address Key Type choices: [valueCodeableConcept] index: 4 valueCodeableConcept: {type: CodeableConcept, short: Address Key Type, choiceOf: value, index: 5} required: [value, valueCodeableConcept] value: match: {} schema: short: Address key value _required: true index: 6 elements: url: pattern: {type: uri, value: value} type: uri index: 7 value: short: Address key value choices: [valueString] index: 9 valueString: {type: string, short: Address key value, choiceOf: value, index: 10} required: [value, valueString] url: pattern: {type: uri, value: 'https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-AddressKey'} type: uri index: 11 value: choices: [] index: 13 package_version: 0.22.0-pre-release extensions: type: url: null short: Address Key Type _required: true index: 1 elements: url: pattern: {type: uri, value: type} type: uri index: 2 value: short: Address Key Type choices: [valueCodeableConcept] index: 4 valueCodeableConcept: {type: CodeableConcept, short: Address Key Type, choiceOf: value, index: 5} required: [value, valueCodeableConcept] value: url: null short: Address key value _required: true index: 6 elements: url: pattern: {type: uri, value: value} type: uri index: 7 value: short: Address key value choices: [valueString] index: 9 valueString: {type: string, short: Address key value, choiceOf: value, index: 10} required: [value, valueString] class: extension kind: complex-type url: https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-AddressKey base: http://hl7.org/fhir/StructureDefinition/Extension version: 3.0.0