<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://example.org/fhir/StructureDefinition/MyConditionEXT" />
  <name value="MyConditionEXT" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Condition" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Condition" />
  <derivation value="constraint" />
  <differential>
    <element id="Condition.clinicalStatus">
      <path value="Condition.clinicalStatus" />
      <definition value="The clinical status of the condition.." />
    </element>
    <element id="Condition.category">
      <path value="Condition.category" />
      <definition value="A category assigned to the condition.." />
    </element>
    <element id="Condition.severity">
      <path value="Condition.severity" />
      <definition value="A subjective assessment of the severity of the condition as evaluated by the clinician.." />
    </element>
    <element id="Condition.bodySite">
      <path value="Condition.bodySite" />
      <max value="1" />
    </element>
  </differential>
</StructureDefinition>