<status value="active" /> <date value="2024-02-12T04:04:09.5621857+00:00" /> <description value="This profile is derived from the base FHIR [Observation](https://www.hl7.org/fhir/Observation.html) resource." /> <fhirVersion value="4.0.1" /> <kind value="resource" /> <abstract value="false" /> <type value="Observation" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" /> <derivation value="constraint" /> <differential> <element id="Observation.code.coding.code"> <path value="Observation.code.coding.code" /> <min value="1" /> <fixedCode value="718-7" /> </element> <element id="Observation.component"> <path value="Observation.component" /> <slicing> <discriminator> <type value="value" /> <path value="code.coding.code" /> </discriminator> <rules value="open" /> </slicing> <min value="1" /> </element> <element id="Observation.component:gestationalAge"> <path value="Observation.component" /> <sliceName value="gestationalAge" /> </element> <element id="Observation.component:gestationalAge.code.coding.code"> <path value="Observation.component.code.coding.code" /> <fixedCode value="18185-9" /> </element> <element id="Observation.component:gestationalAge.value[x]"> <path value="Observation.component.value[x]" /> <type> <code value="Quantity" /> </type> </element> <element id="Observation.component:gestationalAge.value[x].system"> <path value="Observation.component.value[x].system" /> <fixedUri value="http://unitsofmeasure.org" /> </element> <element id="Observation.component:gestationalAge.value[x].code"> <path value="Observation.component.value[x].code" /> <fixedCode value="d" /> </element> <element id="Observation.component:valueQuantity"> <path value="Observation.component" /> <sliceName value="valueQuantity" /> </element> <element id="Observation.component:valueQuantity.code.coding.code"> <path value="Observation.component.code.coding.code" /> <fixedCode value="718-7" /> </element> <element id="Observation.component:valueQuantity.value[x]"> <path value="Observation.component.value[x]" /> <type> <code value="Quantity" /> </type> </element> <element id="Observation.component:valueQuantity.value[x].system"> <path value="Observation.component.value[x].system" /> <fixedUri value="http://unitsofmeasure.org" /> </element> <element id="Observation.component:valueQuantity.value[x].code"> <path value="Observation.component.value[x].code" /> <fixedCode value="g/dL" /> </element> </differential> </StructureDefinition>