description: The number or name of a specific unit contained within a building or complex, as assigned by that building or complex. package_name: rs/hl7.fhir.core derivation: constraint name: unitID type: null elements: extension: {name: extension, index: 0} url: type: uri 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: 1.4.0 extensions: {} class: datatype kind: datatype url: http://hl7.org/fhir/StructureDefinition/iso21090-ADXP-unitID base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [value, valueString]