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The SNOMED CT Diagramming Guideline document describes a diagrammatic notation for representing the definition of a concept, an expression, or relation between expressions within SNOMED CT. The aim of this guideline is to:

  • Provide a consistent, diagramming style in documentation
  • Reduce ambiguity and misunderstandings caused by multiple different representations
  • Improve the quality of diagrams through a consistent approach, prompting consideration of all relevant aspects
  • Increase efficiency, allowing the SNOMED CT community to rapidly exchange ideas
  • Reduce effort by providing templates supporting commonly used tools

This guideline is for use in all IHTSDO documentation and is strongly recommended for all other documentation representing SNOMED CT concepts and models.

Latest web browsable version: http://snomed.org/diaguide

Directory of available documents: http://snomed.org/doc

Publication date: 2017-03-29
This is the date when this PDF file was generated from the online version of this document.

© Copyright 2017 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 http://snomed.org/licensing. For more information about SNOMED International and SNOMED International Membership, please refer to http://www.snomed.org or contact us at info@snomed.org.

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