<StructureDefinition xmlns="http://hl7.org/fhir">
  <meta>
    <lastUpdated value="2017-06-05T11:17:13.968-07:00" />
  </meta>
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="pc" />
  </extension>
  <url value="http://healthstack.com/StructureDefinition/HealthStackReferralRequest" />
  <name value="HealthStackReferralRequest" />
  <status value="draft" />
  <date value="2017-06-05T11:14:04.0734449-07:00" />
  <fhirVersion value="3.0.0" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="ReferralRequest" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/ReferralRequest" />
  <derivation value="constraint" />
  <differential>
    <element>
      <path value="ReferralRequest.identifier.type" />
      <binding>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="IdentifierType" />
        </extension>
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
          <valueBoolean value="true" />
        </extension>
        <strength value="extensible" />
        <valueSetReference>
          <reference value="https://simplifier.net/CHIPProject/identifier-type" />
        </valueSetReference>
      </binding>
    </element>
  </differential>
</StructureDefinition>