description: The number or name of a specific unit contained within a building or complex, as assigned by that building or complex. package_name: hl7.fhir.uv.extensions derivation: constraint name: ADXPUnitID type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/iso21090-ADXP-unitID'} index: 1 value: choices: [valueString] index: 3 valueString: {type: string, choiceOf: value, index: 4} package_version: 0.1.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/iso21090-ADXP-unitID base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.1.0 required: [valueString, value]