<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://slfhir/fhir/StructureDefinition/SL_Observation" />
  <name value="SL_Observation" />
  <status value="draft" />
  <date value="2023-09-28T16:58:27.1453797+00:00" />
  <fhirVersion value="5.0.0" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Observation" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" />
  <derivation value="constraint" />
  <differential>
    <element id="Observation.identifier">
      <path value="Observation.identifier" />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="Observation.identifier.system">
      <path value="Observation.identifier.system" />
      <min value="1" />
      <fixedUri value="htttp:slfhir/hhims/mrn" />
    </element>
    <element id="Observation.identifier.period.start">
      <path value="Observation.identifier.period.start" />
      <min value="1" />
    </element>
    <element id="Observation.code.coding.system">
      <path value="Observation.code.coding.system" />
      <fixedUri value="http://loinc.org" />
    </element>
    <element id="Observation.value[x]">
      <path value="Observation.value[x]" />
      <type>
        <code value="Ratio" />
      </type>
    </element>
    <element id="Observation.value[x].numerator.unit">
      <path value="Observation.value[x].numerator.unit" />
      <fixedString value="http://unitsofmeasure.org" />
    </element>
    <element id="Observation.bodySite.coding.system">
      <path value="Observation.bodySite.coding.system" />
      <fixedUri value="http://hl7.org/fhir/ValueSet/body-site" />
    </element>
    <element id="Observation.device.reference">
      <path value="Observation.device.reference" />
      <binding>
        <strength value="extensible" />
        <description value="device" />
        <valueSet value="http://loinc.org" />
      </binding>
    </element>
  </differential>
</StructureDefinition>