description: null package_name: fhir.nhs.uk.wayfinder derivation: constraint name: ExtensionWayfinderAppointmentStatus type: Extension elements: url: pattern: {type: uri, value: 'https://fhir.nhs.uk/StructureDefinition/Extension-Appointment-Status'} type: uri index: 0 value: choices: [valueCoding] index: 2 valueCoding: {type: Coding, choiceOf: value, index: 3} value[x]: elements: system: pattern: {type: uri, value: 'http://hl7.org/fhir/appointmentstatus'} type: uri index: 4 code: {index: 5} required: [code, system] package_version: 1.0.2 class: extension kind: complex-type url: https://fhir.nhs.uk/StructureDefinition/Extension-Appointment-Status base: http://hl7.org/fhir/StructureDefinition/Extension version: null