Release 5 Draft Ballot

This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions


FHIR Infrastructure Work GroupMaturity Level: N/AStandards Status: InformativeCompartments: Not linked to any defined compartments

Raw JSON (canonical form + also see JSON Format Specification)

Search parameter for an extension example

  "resourceType": "SearchParameter",
  "id": "example-extension",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"\"><p><b>Generated Narrative</b></p><div><p>Resource &quot;example-extension&quot; </p></div><p><b>url</b>: <code></code></p><p><b>name</b>: Example Search Parameter on an extension</p><p><b>status</b>: draft</p><p><b>experimental</b>: true</p><p><b>publisher</b>: Health Level Seven International (FHIR Infrastructure)</p><p><b>contact</b>: <a></a></p><p><b>description</b>: Search by url for a participation agreement, which is stored in a DocumentReference</p><p><b>code</b>: part-agree</p><p><b>base</b>: Patient</p><p><b>type</b>: reference</p><p><b>expression</b>: DocumentReference.extension('')</p><p><b>xpath</b>: f:DocumentReference/f:extension[@url='']</p><p><b>xpathUsage</b>: normal</p><p><b>target</b>: DocumentReference</p></div>"
  "url": "",
  "name": "Example Search Parameter on an extension",
  "status": "draft",
  "experimental": true,
  "publisher": "Health Level Seven International (FHIR Infrastructure)",
  "contact": [
      "telecom": [
          "system": "url",
          "value": ""
  "description": "Search by url for a participation agreement, which is stored in a DocumentReference",
  "code": "part-agree",
  "base": [
  "type": "reference",
  "expression": "DocumentReference.extension('')",
  "xpath": "f:DocumentReference/f:extension[@url='']",
  "xpathUsage": "normal",
  "target": [

Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.