description: A quantity with defined units package_name: ch.fhir.ig.ch-emed derivation: constraint name: CHEMEDQuantityWithEmedUnits type: Quantity elements: value: {index: 0} unit: {index: 1} system: {short: System of the code from Units of Presentation, index: 2} code: binding: {strength: required, valueSet: 'http://fhir.ch/ig/ch-emed/ValueSet/UnitCode'} index: 3 package_version: 4.0.0-ballot class: complex-type kind: complex-type url: http://fhir.ch/ig/ch-emed/StructureDefinition/ch-emed-quantity base: http://hl7.org/fhir/StructureDefinition/SimpleQuantity version: 4.0.0-ballot required: [value, unit, system, code]