description: An alternative representation of the same physical quantity expressed in a different unit from a different unit code system and possibly with a different value. package_name: hl7.fhir.uv.extensions.r3 derivation: constraint name: PQTranslation type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/iso21090-PQ-translation'} type: uri index: 1 value: choices: [valueQuantity] index: 3 valueQuantity: {type: Quantity, choiceOf: value, index: 4} package_version: 5.3.0-ballot-tc1 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/iso21090-PQ-translation base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot-tc1 required: [value, valueQuantity]