<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="proximal-provenance-extension" />
  <url value="http://vha.gov/fhir/StructureDefinition/proximal-provenance-extension" />
  <name value="proximal-provenance-extension" />
  <status value="draft" />
  <fhirVersion value="3.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="Condition" />
  <context value="Observation" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <snapshot />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <short value="Proximal source of the information" />
      <definition value="The proximal (most recent) source of the information in the resource." />
      <comment value="This data element is used to denote the provenance (source) of the information from which it was most recently obtained in order to create the denoted clinical statement.  For example, if an observation was made directly by a clinician (such as a physical exam finding), then the provenance would be &quot;medical practitioner.&quot;  If an observation was seen in a prior medical record and copied into the current encounter record, then the provenance would be &quot;medical record review.&quot;    If an observation were generated in a clinical laboratory and transmitted to the EHR electronically, the provenance would be &quot;clinical laboratory information system.&quot;  See the associated value set for all of the allowed values." />
      <max value="1" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://vha.gov/fhir/StructureDefinition/proximal-provenance-extension" />
    </element>
    <element id="Extension.value[x]:valueCoding">
      <path value="Extension.valueCoding" />
      <sliceName value="valueCoding" />
      <short value="Proximal source of the information" />
      <definition value="The coded value representing the proximal source of this information" />
      <min value="1" />
      <type>
        <code value="Coding" />
      </type>
      <binding>
        <strength value="extensible" />
        <valueSetReference>
          <reference value="http://vha.gov/fhir/ValueSet/proximal-provenance" />
        </valueSetReference>
      </binding>
    </element>
  </differential>
</StructureDefinition>