<StructureDefinition xmlns="http://hl7.org/fhir">
  <meta>
    <versionId value="1" />
    <lastUpdated value="2020-04-24T08:11:31.811+00:00" />
  </meta>
  <url value="http://example.org/fhir/StructureDefinition/iFoot_ABPI_Links" />
  <name value="ABPI_Links" />
  <title value="iFoot ABPI Links" />
  <status value="draft" />
  <date value="2021-06-30T08:28:51.1420687+00:00" />
  <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.identifier">
      <path value="Observation.identifier" />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="Observation.code.coding.system">
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
        <valueCode value="normative" />
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version">
        <valueCode value="4.0.0" />
      </extension>
      <path value="Observation.code.coding.system" />
      <fixedUri value="http://snomed.info/sct" />
    </element>
    <element id="Observation.code.coding.code">
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
        <valueCode value="normative" />
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version">
        <valueCode value="4.0.0" />
      </extension>
      <path value="Observation.code.coding.code" />
      <fixedCode value="446841001" />
    </element>
    <element id="Observation.code.coding.display">
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
        <valueCode value="normative" />
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version">
        <valueCode value="4.0.0" />
      </extension>
      <path value="Observation.code.coding.display" />
      <min value="1" />
      <fixedString value="Ankle brachial pressure index" />
    </element>
    <element id="Observation.subject">
      <path value="Observation.subject" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Patient" />
      </type>
    </element>
    <element id="Observation.value[x]">
      <path value="Observation.value[x]" />
      <min value="1" />
      <type>
        <code value="CodeableConcept" />
      </type>
    </element>
    <element id="Observation.value[x].coding.system">
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
        <valueCode value="normative" />
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version">
        <valueCode value="4.0.0" />
      </extension>
      <path value="Observation.value[x].coding.system" />
    </element>
    <element id="Observation.value[x].coding.userSelected">
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
        <valueCode value="normative" />
      </extension>
      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version">
        <valueCode value="4.0.0" />
      </extension>
      <path value="Observation.value[x].coding.userSelected" />
      <fixedBoolean value="false" />
    </element>
    <element id="Observation.bodySite">
      <path value="Observation.bodySite" />
      <min value="1" />
    </element>
    <element id="Observation.bodySite.coding.system">
      <path value="Observation.bodySite.coding.system" />
      <fixedUri value="http://snomed.info/sct" />
    </element>
    <element id="Observation.bodySite.coding.code">
      <path value="Observation.bodySite.coding.code" />
      <fixedCode value="48979004" />
    </element>
    <element id="Observation.bodySite.text">
      <path value="Observation.bodySite.text" />
      <min value="1" />
      <fixedString value="Left leg" />
    </element>
    <element id="Observation.device">
      <path value="Observation.device" />
      <max value="0" />
    </element>
    <element id="Observation.referenceRange">
      <path value="Observation.referenceRange" />
      <max value="0" />
    </element>
    <element id="Observation.hasMember">
      <path value="Observation.hasMember" />
      <max value="0" />
    </element>
    <element id="Observation.derivedFrom">
      <path value="Observation.derivedFrom" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>