description: This extension applies to the [Address](http://hl7.org/fhir/R4/datatypes.html#Address) data type and is used to indicate that a location address is not a fixed address for an individual. package_name: hl7.fhir.au.base derivation: constraint name: NoFixedAddress type: Extension elements: url: pattern: {type: Uri, value: 'http://hl7.org.au/fhir/StructureDefinition/no-fixed-address'} index: 0 value: short: Indicator of no fixed address pattern: {type: Boolean, value: true} choices: [valueBoolean] index: 2 valueBoolean: type: boolean short: Indicator of no fixed address pattern: {type: Boolean, value: true} choiceOf: value index: 3 package_version: 4.2.2-ballot class: extension kind: complex-type url: http://hl7.org.au/fhir/StructureDefinition/no-fixed-address base: http://hl7.org/fhir/StructureDefinition/Extension version: 4.2.2-ballot required: [value, valueBoolean]