Which of the following statements about FHIR is true?

• A. FHIR is a monolithic, server-centered protocol.
• B. FHIR is modular and RESTful, using modern web standards for API-based access.
• C. FHIR cannot be used over the web.
• D. FHIR is only used for billing codes.

Answer: (B)

FHIR is built around modular resources that model individual healthcare concepts, such as Patient, Observation, or Medication. This structure lets systems mix and match the pieces they need and compose data from multiple sources without relying on a single, all-encompassing schema. It uses RESTful APIs and standard web technologies—HTTP, JSON, XML, and URIs—so data can be requested, created, updated, and searched over the web in familiar ways. This web-friendly, API-based approach enables easy interoperability among apps and providers. Billing codes are just one part; FHIR covers a wide range of data and workflows, not only billing. So the statement that FHIR is modular and RESTful using modern web standards for API-based access is the accurate description.