This Document

Skip to end of metadata
Go to start of metadata

This guidance applies to new content or specific content undergoing revision as part of an approved project. There are therefore many terms in the existing content (LEGACY CONTENT) that do not comply with this guidance. The process of correcting existing content will be carried out as time and resources permit and as per an approved project. 

The Editorial Guide provides the information necessary to model terms in SNOMED CT.  It is for those who edit content in the International Release, but it may also be useful to those creating extensions. It is a working document, subject to change and revision.

SNOMED CT is distributed in sets of electronic files. Supporting software tools are not necessarily provided directly by SNOMED International.

Short link: 

Downloadable PDF versions of this document can be found here - PDFs for Download

The Editorial Guide publishes only the rules that apply to precoordinated content. That is, the rules where the 'Content Type' is one of the following - |All SNOMED CT content|, |All precoordinated SNOMED CT content|, or |All new precoordinated SNOMED CT content|. The rules that are not published in the Editorial Guide are the ones that apply only to |All postcoordinated content|.  See the different content types and rules in the MRCM maintenance tool at  

Text that is protected by copyright will not be accepted for inclusion unless accompanied by a release from the copyright holder.

© Copyright 2022 International Health Terminology Standards Development Organisation, all rights reserved.

This document is a publication of International Health Terminology Standards Development Organisation, trading as SNOMED International.  SNOMED International owns and maintains SNOMED CT®.

Any modification of this document (including without limitation the removal or modification of this notice) is prohibited without the express written permission of SNOMED International. This document may be subject to updates. Always use the latest version of this document published by SNOMED International. This can be viewed online and downloaded by following the links on the front page or cover of this document.

SNOMED®, SNOMED CT® and IHTSDO® are registered trademarks of International Health Terminology Standards Development Organisation. SNOMED CT® licensing information is available at For more information about SNOMED International and SNOMED International Membership, please refer to or contact us at


  • No labels