<status value="draft" /> <experimental value="true" /> <date value="2018-03-21T14:43:39.739+01:00" /> <description value="Range constrained to UCUM as codesystem." /> <purpose value="requires UCUM as codesystem for units" /> <fhirVersion value="3.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <type value="Range" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Range" /> <derivation value="constraint" /> <differential> <element id="Range.low.system"> <path value="Range.low.system" /> <min value="1" /> <fixedUri value="http://unitsofmeasure.org" /> </element> <element id="Range.low.code"> <path value="Range.low.code" /> <min value="1" /> </element> <element id="Range.high.system"> <path value="Range.high.system" /> <min value="1" /> <fixedUri value="http://unitsofmeasure.org" /> </element> <element id="Range.high.code"> <path value="Range.high.code" /> <min value="1" /> </element> </differential> </StructureDefinition>