Which FHIR resource is used to reference a document of any kind for any purpose?

• A. CatalogEntry
• B. DocumentReference
• C. Basic
• D. Binary

Answer: (B)

DocumentReference is the resource designed to represent a link to a document, with its metadata and a pointer to where the content actually resides. It can reference documents of any kind and for any purpose by including details such as the document type, subject, authors, dates, and a location for the content (via an attachment or a URL). This makes it the standard way to indicate that a document exists and where to find it, without embedding the document data itself in the resource.

Other resources don’t fill this exact role. CatalogEntry is about items in a catalog, not documents. Basic is a flexible placeholder for user-defined information, not specifically a document reference. Binary stores the actual bytes of a document, not a structured reference with metadata and pointers, so it’s about the content itself rather than describing or pointing to external documents.