<CodeSystem xmlns="http://hl7.org/fhir">
  <url value="https://fhir.nhs.uk/STU3/CodeSystem/eRS-AssignedIndicator-1" />
  <version value="1.0.0" />
  <name value="eRS Assigned Indicator" />
  <status value="active" />
  <publisher value="NHS Digital" />
  <contact>
    <name value="Interoperability Team" />
    <telecom>
      <system value="email" />
      <value value="interoperabilityteam@nhs.net" />
      <use value="work" />
    </telecom>
  </contact>
  <purpose value="A code to indicate if a specific or empty value is being searched for." />
  <copyright value="© 2017 NHS Digital" />
  <content value="complete" />
  <concept>
    <code value="ASSIGNED" />
    <display value="A specific value is assigned. The value is supplied in a different field." />
  </concept>
  <concept>
    <code value="NOT_ASSIGNED" />
    <display value="An empty (i.e. no value) is being searched for. This is a specific search criteria and is not a 'don't care'." />
  </concept>
</CodeSystem>