{"caseSensitive":true,"concept":[{"code":"performer","definition":"A person, non-person living subject, organization or device that who actually and principally carries out the Task action.","display":"Performer"},{"code":"verifier","definition":"A person who verifies the correctness and appropriateness of the Task action (plan, order, event, etc.) and hence takes on accountability.","display":"Verifier"},{"code":"witness","definition":"A person witnessing the action happening without doing anything. A witness is not necessarily aware, much less approves of anything stated in the service event.","display":"Witness"},{"code":"referrer","definition":"A person having referred the action of the Task to the performer (referring physician).","display":"Referrer"}],"contact":[{"telecom":[{"system":"url","value":"http://hl7.org/fhir"},{"system":"email","value":"fhir@lists.hl7.org"}]}],"content":"complete","date":"2025-03-12T10:00:00+08:00","description":"The performer of the task.","experimental":false,"extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-wg","valueCode":"oo"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status","valueCode":"informative"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm","valueInteger":1}],"id":"task-performer-function-code","jurisdiction":[{"coding":[{"code":"001","display":"World","system":"http://unstats.un.org/unsd/methods/m49/m49.htm"}]}],"meta":{"lastUpdated":"2026-03-31T21:09:49.899+00:00"},"name":"TaskPerformerFunctionCode","publisher":"HL7 (FHIR Project)","resourceType":"CodeSystem","status":"active","text":{"div":"<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem task-performer-function-code</b></p><a name=\"task-performer-function-code\"> </a><a name=\"hctask-performer-function-code\"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/task-performer-function-code</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">performer<a name=\"task-performer-function-code-performer\"> </a></td><td>Performer</td><td>A person, non-person living subject, organization or device that who actually and principally carries out the Task action.</td></tr><tr><td style=\"white-space:nowrap\">verifier<a name=\"task-performer-function-code-verifier\"> </a></td><td>Verifier</td><td>A person who verifies the correctness and appropriateness of the Task action (plan, order, event, etc.) and hence takes on accountability.</td></tr><tr><td style=\"white-space:nowrap\">witness<a name=\"task-performer-function-code-witness\"> </a></td><td>Witness</td><td>A person witnessing the action happening without doing anything. A witness is not necessarily aware, much less approves of anything stated in the service event.</td></tr><tr><td style=\"white-space:nowrap\">referrer<a name=\"task-performer-function-code-referrer\"> </a></td><td>Referrer</td><td>A person having referred the action of the Task to the performer (referring physician).</td></tr></table></div>","status":"generated"},"title":"Task Performer Function Code","url":"http://hl7.org/fhir/task-performer-function-code","valueSet":"http://hl7.org/fhir/ValueSet/task-performer-function-code","version":"6.0.0-ballot4"}