Glossary · FHIR resources
FHIR extension
A FHIR extension is the standard way to add an element the base resource does not have, identified by a URL that points to its definition, so that every system can at least recognise it.
National guides define extensions for local needs (a race category, a regional identifier) without changing the core standard.
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Definitions written by Anpheros from the official sources linked on each page. General information about standards and regulation, not legal or medical advice. All terms →