Secondary Use FHIR Server Implementation Guide
0.1.0 - ci-build

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: Secondary Use Count Preview - XML Representation

Draft as of 2026-07-01

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<OperationDefinition xmlns="http://hl7.org/fhir">
  <id value="SecondaryUseCountPreviewOperation"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Gegenereerde narrative: OperationDefinition SecondaryUseCountPreviewOperation</b></p><a name="SecondaryUseCountPreviewOperation"> </a><a name="hcSecondaryUseCountPreviewOperation"> </a><p>Url: [base]/$export</p><h3>Parameters</h3><table class="grid"><tr><td><b>Gebruik</b></td><td><b>Naam</b></td><td><b>Scope</b></td><td><b>Kardinaliteit</b></td><td><b>Type</b></td><td><b>Binding</b></td><td><b>Documentatie</b></td></tr><tr><td>IN</td><td>_summary</td><td/><td>1..1</td><td><a href="http://hl7.org/fhir/R4/datatypes.html#code">code</a></td><td/><td><div><p>Must be count.</p>
</div></td></tr><tr><td>OUT</td><td>cohort-patients</td><td/><td>1..1</td><td><a href="http://hl7.org/fhir/R4/datatypes.html#integer">integer</a></td><td/><td><div><p>Number of patients in the resolved cohort.</p>
</div></td></tr><tr><td>OUT</td><td>resource-count</td><td/><td>0..*</td><td/><td/><td><div><p>Repeated part with type and count for every requested output resource type.</p>
</div></td></tr><tr><td>OUT</td><td>resource-count.type</td><td/><td>1..1</td><td><a href="http://hl7.org/fhir/R4/datatypes.html#code">code</a></td><td/><td><div><p>Output resource type.</p>
</div></td></tr><tr><td>OUT</td><td>resource-count.count</td><td/><td>1..1</td><td><a href="http://hl7.org/fhir/R4/datatypes.html#integer">integer</a></td><td/><td><div><p>Number of matching resources of this type.</p>
</div></td></tr></table></div>
  </text>
  <url
       value="https://fhir.cumuluz.org/OperationDefinition/secondary-use-count-preview"/>
  <version value="0.1.0"/>
  <name value="SecondaryUseCountPreview"/>
  <title value="Secondary Use Count Preview"/>
  <status value="draft"/>
  <kind value="operation"/>
  <date value="2026-07-01T09:38:56+02:00"/>
  <publisher value="Cumuluz"/>
  <description
               value="Local adapter extension that returns cohort and output resource counts without creating a Bulk job when _summary=count is supplied to /fhir/$export."/>
  <affectsState value="false"/>
  <code value="export"/>
  <system value="true"/>
  <type value="false"/>
  <instance value="false"/>
  <parameter>
    <name value="_summary"/>
    <use value="in"/>
    <min value="1"/>
    <max value="1"/>
    <documentation value="Must be count."/>
    <type value="code"/>
  </parameter>
  <parameter>
    <name value="cohort-patients"/>
    <use value="out"/>
    <min value="1"/>
    <max value="1"/>
    <documentation value="Number of patients in the resolved cohort."/>
    <type value="integer"/>
  </parameter>
  <parameter>
    <name value="resource-count"/>
    <use value="out"/>
    <min value="0"/>
    <max value="*"/>
    <documentation
                   value="Repeated part with type and count for every requested output resource type."/>
    <part>
      <name value="type"/>
      <use value="out"/>
      <min value="1"/>
      <max value="1"/>
      <documentation value="Output resource type."/>
      <type value="code"/>
    </part>
    <part>
      <name value="count"/>
      <use value="out"/>
      <min value="1"/>
      <max value="1"/>
      <documentation value="Number of matching resources of this type."/>
      <type value="integer"/>
    </part>
  </parameter>
</OperationDefinition>