This page is part of the FHIR Specification (v4.0.1: R4 - Mixed Normative and STU) in it's permanent home (it will always be available at this URL). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions  . Page versions: R4B R4 R3 R2
. Page versions: R4B R4 R3 R2
Search Parameter keyword (type: string) defined as part of the valueset-extensions Profile.
| Vocabulary  | Maturity Level: 0 | Informative | 
Optional Extensions Element
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