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The Reference Information Model (RIM) is the cornerstone of the HL7 Version 3 development process. An object model created as part of the Version 3 methodology, the RIM is a large, pictorial representation of the HL7 clinical data (domains) and identifies the life cycle that a message or groups of related messages will carry. It is a shared model between all domains and, as such, is the model from which all domains create their messages. The RIM is an ANSI approved standard.

Purpose: Supports HL7 v3 development and implementation.

Product Family:

  • HL7 V3
  • HL7 CDA

HL7 Functional Areas:

  • Standards Development
  • Implementation


  • XML
  • Model Interchange Format

Version Rollout Date Last Update License
2.41 2012-11-01 HL7 License

Assessment: (done: 2016-08-13)

People and Organizations associated with HL7 Reference Model:

  • Woody Beeler -Developer/Maintainer- (

  • Russ Hamm -Maintainer- (

  • Jean Duteau -Maintainer- (

  • Ted Klein -Maintainer- (