description: This extension applies to the [time](http://hl7.org/fhir/R4/datatypes.html#time) data type and is used to represent an Australian time zone. package_name: hl7.fhir.au.base derivation: constraint name: AustralianTimeZone type: Extension elements: url: pattern: {type: Uri, value: 'http://hl7.org.au/fhir/StructureDefinition/au-timezone'} index: 0 value: short: Time zone choices: [valueCodeableConcept] index: 2 valueCodeableConcept: {type: CodeableConcept, short: Time zone, choiceOf: value, index: 3} package_version: 4.2.1-preview class: extension kind: complex-type url: http://hl7.org.au/fhir/StructureDefinition/au-timezone base: http://hl7.org/fhir/StructureDefinition/Extension version: 4.2.1-preview required: [value, valueCodeableConcept]