description: This profile constrains the Quantity data type. package_name: ch.fhir.ig.ch-ems derivation: constraint name: CHEmsQuantity type: Quantity elements: value: {mustSupport: true, index: 0} unit: {mustSupport: true, index: 1} system: {mustSupport: true, index: 2} code: {mustSupport: true, index: 3} package_version: 2.0.0-ballot class: complex-type kind: complex-type url: http://fhir.ch/ig/ch-ems/StructureDefinition/ch-ems-quantity base: http://hl7.org/fhir/StructureDefinition/Quantity version: 2.0.0-ballot required: [value, system, code]