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This page provides details about terminologies used in HL7 standards but owned and governed by other organisations external to HL7.

External terminologies in HL7 standards are administered within HL7 by the HL7 Terminology Authority

This includes:

Information provided about external terminologies includes: 

  • Owner of the terminology
  • Arrangement or agreements with HL7 for use of content
  • Formal name of the code system
  • Short name or abbreviation of the code system name
  • Technical identifier/s of the code  system (OIDs, URI etc)
  • Link to information about the code system - including how to obtain the content
  • Version management: timing and identification of versions
  • IP Information and Licensing 
  • HL7 users of this information - which HL7 products use this link (if known)
  • Information current as at (date)
  • Scope/domain statement
  • No labels


  1. Do we include national terminologies e.g. ICD-10-GM?

    1. Yes these are all external terminologies - however HTA only deal with international code systems - but we also advise affiliates where relevant.