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SNOMED Clinical Terms

SNOMED Clinical Terms® (SNOMED CT®) is a healthcare terminology owned and maintained by the International Health Terminology Standards Development Organisation. The IHTSDO is also known as SNOMED SDO®.

SNOMED CT is considered to be the most comprehensive, multilingual clinical terminology in the world.

SNOMED CT was created between 1999 and 2002 by the convergence of SNOMED RT® and the Clinical Terms Version 3 (CTV3 - formerly known as the Read Codes). Prior to the merger, SNOMED RT® was developed by the College of American Pathologists and CTV3 was a product of the National Health Service in England. The result of the merger, SNOMED CT, was owned by CAP until April 2007 when ownership was transferred to the IHTSDO.

SNOMED CT incorporates the codes, concepts and terms from all versions of the Read Codes and from earlier versions of SNOMED International.

Within the United Kingdom, SNOMED CT is the "NHS preferred clinical terminology" and has an important role in NHS Connecting for Health (the UK NHS National Programme for Information Technology).

The Clinical Information Consultancy Ltd offers SNOMED CT Training and Consultancy services to support implementation of SNOMED Clincal Terms®.

  • David Markwell (Principal Consultant, CIC Ltd) has been a consultant to the SNOMED International Standards Board since 2001 and played a key role in the technical design of SNOMED CT. Since 2005 David has been chair of the SNOMED Concept Model Working Group.
  • Andrew Perry (Senior Associate Consultant, CIC Ltd) has been actively involved in working with implementation and standardisation of clinical information models for many years. Since 2005 he has been providing implementers and NHS organisations with detailed advice on SNOMED CT implementation issues.
  • CliniClue® (formerly known as the CLUE Browser) is a browser for use with SNOMED CT. CliniClue is owned by The Clinical Information Consultancy Ltd and is made available as freeware to all SNOMED CT licensees - including IHTSDO Member, IHTSDO Affiliates and their sub-licensees.