description: Constraints and extensions on SimpleQuantity which restricts the units. package_name: hl7.fhir.us.davinci-pas derivation: constraint name: PASQuantity type: Quantity elements: value: {mustSupport: true, index: 0} unit: {mustSupport: true, index: 1} system: {mustSupport: true, index: 2} code: binding: {strength: required, valueSet: 'https://valueset.x12.org/x217/005010/request/2000F/HSD/1/01/00/673'} mustSupport: true index: 3 package_version: 2.2.1 class: complex-type kind: complex-type url: http://hl7.org/fhir/us/davinci-pas/StructureDefinition/profile-quantity base: http://hl7.org/fhir/StructureDefinition/SimpleQuantity version: 2.2.1 required: [value]