Which type of version is controlled by the author of the resource and represents the version of FHIR in which the resource is represented?

• A. Version History
• B. FHIR Version
• C. Record Version
• D. Business Version

Answer: (B)

Choosing which FHIR version a resource uses is about identifying which edition of the FHIR specification the resource conforms to. The author selects the FHIR Version to indicate that the resource is expressed according to a particular release (for example, R4, STU3). This matters because different FHIR versions can have different structures, elements, and rules, so systems must know which version to validate against and how to interpret the data. Version History, by contrast, tracks the resource’s own revisions over time, not the specification version it was written in. The other terms aren’t standard identifiers for the specification version.