The general pattern for representing coded elements in FHIR uses which four elements?

The general pattern for representing coded elements in FHIR uses which four elements?

• A. System, version, code, display
• B. Scheme, code, label, note
• C. URI, code, name, value
• D. System, code, display, status

Answer: (A)

In FHIR, coded elements are represented using a Coding structure that captures both what the code means and how it’s identified. The four key pieces are system, version, code, and display. The system is the URI that identifies the code set (for example, a specific code system like LOINC or SNOMED CT). The version indicates which version of that code system is being used, since codes can change over time. The code is the actual code value within that system, and the display is a human-friendly label that describes the code for users. While a CodeableConcept can hold multiple codings from different systems, each coding entry relies on these four fields. The other options don’t reflect the standard four-field pattern used to represent coded elements in FHIR.

In FHIR, coded elements are represented using a Coding structure that captures both what the code means and how it’s identified. The four key pieces are system, version, code, and display. The system is the URI that identifies the code set (for example, a specific code system like LOINC or SNOMED CT). The version indicates which version of that code system is being used, since codes can change over time. The code is the actual code value within that system, and the display is a human-friendly label that describes the code for users. While a CodeableConcept can hold multiple codings from different systems, each coding entry relies on these four fields. The other options don’t reflect the standard four-field pattern used to represent coded elements in FHIR.