<status value="draft" /> <date value="2024-02-01T19:39:15.322061+00:00" /> <publisher value="Ontario Health" /> <description value="This profile represents the constraint applied to the Quantity data type by the PS-ON project to use UCUM as the code system for units. Informed by the constraints of the [Observation-Quantity-UV-IPS profile](http://hl7.org/fhir/uv/ips/StructureDefinition-Quantity-uv-ips.html)." /> <jurisdiction> <coding> <system value="http://unstats.un.org/unsd/methods/m49/m49.htm" /> <code value="124" /> </coding> </jurisdiction> <fhirVersion value="4.0.1" /> <mapping> <identity value="v2" /> <uri value="http://hl7.org/v2" /> <name value="HL7 v2 Mapping" /> </mapping> <mapping> <identity value="rim" /> <uri value="http://hl7.org/v3" /> <name value="RIM Mapping" /> </mapping> <kind value="complex-type" /> <abstract value="false" /> <type value="Quantity" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Quantity" /> <derivation value="constraint" /> <differential> <element id="Quantity"> <path value="Quantity" /> <short value="A measured amount using UCUM" /> <definition value="A measured amount (or an amount that can potentially be measured). Note that measured amounts include amounts that are not precisely quantified, including amounts involving arbitrary units and floating currencies. This profile imposes that the code system for units be UCUM." /> </element> <element id="Quantity.system"> <path value="Quantity.system" /> <short value="UCUM system for units" /> <min value="1" /> <fixedUri value="http://unitsofmeasure.org" /> <mustSupport value="true" /> </element> <element id="Quantity.code"> <path value="Quantity.code" /> <min value="1" /> <mustSupport value="true" /> </element> </differential> </StructureDefinition>