Secondary Use FHIR Server Implementation Guide
0.1.0 - ci-build

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: Secondary Use Count Preview - JSON Representation

Draft as of 2026-07-01

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