description: This profile constrains the Quantity data type to use UCUM for units.\nWhen using the Quantity datatype, the unit is represented using a coded form with UCUM as the system in the code element. The human-readable textual representation is is captured in the unit element.\nIf no suitable UCUM code exists, the code is set to “1”, and the textual unit representation is used.\nIf both coded and textual representations are present, they need to be semantically consistent.
package_name: hl7.fhir.eu.laboratory
derivation: constraint
name: QuantityEuLab
type: Quantity
elements:
  extension:
    type: Extension
    url: http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty|5.2.0
    index: 0
    slicing:
      slices:
        uncertainty:
          match: {}
          schema: {type: Extension, url: 'http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty|5.2.0', index: 0}
          min: 0
          max: 1
        uncertaintyType:
          match: {}
          schema: {type: Extension, url: 'http://hl7.org/fhir/StructureDefinition/iso21090-uncertaintyType|5.2.0', index: 1}
          min: 0
          max: 1
  system:
    pattern: {type: Uri, value: 'http://unitsofmeasure.org'}
    index: 2
package_version: 2.0.0
extensions:
  uncertainty: {url: 'http://hl7.org/fhir/StructureDefinition/iso21090-uncertainty|5.2.0', min: 0, max: 1, type: Extension, index: 0}
  uncertaintyType: {url: 'http://hl7.org/fhir/StructureDefinition/iso21090-uncertaintyType|5.2.0', min: 0, max: 1, type: Extension, index: 1}
class: complex-type
kind: complex-type
url: http://hl7.eu/fhir/laboratory/StructureDefinition/Quantity-eu-lab
base: http://hl7.org/fhir/StructureDefinition/Quantity
version: 2.0.0