Overview
ISO/HL7 21731:2014 - Health informatics - HL7 version 3 - Reference information model - Release 4 defines the HL7 Reference Information Model (RIM) as a static, consensus model of health and healthcare information used within HL7 standards development and by ISO TC215 (Health Informatics). Published as the second edition in 2014, this standard is the authoritative source from which HL7 version 3.0 protocol specification standards derive their information-related content. It provides a stable conceptual foundation for representing clinical, administrative and operational healthcare information to support consistent semantics across standards.
Key Topics and Requirements
- Reference model scope and purpose - establishes the RIM as the canonical conceptual model for HL7 v3 information content and semantics.
- Model consistency and governance - documents the RIM release (Release 4) as the consensus view of HL7 working groups and international affiliates, intended to ensure uniform interpretation across specifications.
- Normative foundation for HL7 v3 artifacts - the RIM is the primary source for information-related elements used in HL7 v3 protocol specifications and related information models.
- Use within ISO TC215 - positions the RIM as a reference that can be applied when developing additional health informatics specifications at the international level.
- Publication and distribution details - official ISO/HL7 publication with licensing and usage guidance for the electronic format (CD-ROM/HTML distribution).
(Note: this summary remains at a conceptual level consistent with the published scope; the standard itself contains the formal model and detailed normative content.)
Applications
ISO/HL7 21731:2014 is used to achieve and maintain semantic interoperability in healthcare IT:
- Standards developers rely on the RIM as the baseline for creating and harmonizing HL7 v3 messaging, document and interface specifications.
- EHR and clinical system architects use the model to align internal data models with internationally recognized semantics, simplifying integration and data exchange.
- Software implementers and integrators map local data structures to HL7 v3-based specifications using the RIM as the authoritative guide.
- Regulators and health information governance bodies reference the RIM when assessing conformity of information standards and interoperability strategies.
- Researchers and educators consult the RIM for teaching or analyzing information model approaches in health informatics.
Related Standards
- HL7 version 3 protocol specification standards (derive their information-related content from the RIM)
- ISO TC215 health informatics standards (RIM serves as a referenced model for related specifications)
- Other HL7 family standards and implementation guides that reference or extend HL7 v3 information content
Keywords: ISO/HL7 21731:2014, Reference Information Model, HL7 RIM Release 4, HL7 v3, health informatics standard, interoperability, EHR integration.
