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SNOMED CT/ICD-11 Chapter – IHTSDO Call for Clinical Experts – September 2014

The International Health Terminology Standards Development Organisation (IHTSDO), developers and owners of SNOMED CT, has a collaboration agreement with the World Health Organization (WHO) to ensure linkage between SNOMED CT and WHO classifications.

As part of this agreement, IHTSDO is undertaking a key piece of work to ensure alignment between SNOMED CT content and that proposed in ICD-11, such that SNOMED CT concepts used worldwide by clincians in electronic health record systems for clinical information can be linked across to ICD-11 for information related to healthcare statistics, billing, public health, and epidemiology. The review focuses on identifying gaps in SNOMED CT in relation to ICD-11, checking clinical definitions, and confirming what is out of scope for SNOMED CT, such as specific classification terms.

IHTSDO is working through the ICD-11 Beta Draft chapter-by-chapter and preparing an initial assessment. The next step is a review by clinical experts.  Therefore, IHTSDO requires clinical specialists to review what SNOMED CT changes are being proposed, as to ensure clinical relevance for international usage as well as to ensure that the clinical definitions are understandable and in line with current clinical thinking.

IHTSDO has drawn up an outline plan for progressing through the chapters to the end of 2014 (2015 work will be scheduled in November 2014) and is therefore reaching out globally to seek clinicians from relevant specialties to contribute to the review and propose changes to SNOMED CT and clinical definitions.

IHTSDO is not seeking specifically medical informaticians, but individuals or groups who are interested in contributing clinically and have recent clinical experience. Interested clinicians should have an awareness of terminology and its use in electronic health records. IHTSDO will undertake a session providing background on SNOMED CT and IHTSDO, details around the methodology being used, and how the work is to be done (using spreadsheets); all this will be done remotely. IHTSDO hopes that the work will be of benefit to clinicians, giving them more knowledge of SNOMED CT and its application for their specialty.

The work would be done over a one-month period with support as required.  The number of hours will vary according to how much an individual wants to contribute, but would normally be a total of 10 to 20 hours.

Chapter headings Estimated review date Number of reviewers
required (minimum)
Diseases of the genitourinary system Immediately 6
Diseases of the circulatory system Immediately 4
Diseases of the ear and mastoid process Immediately 2
Infectious diseases September 2014 8
Diseases of the musculoskeletal system and connective tissue October 2014 6
Diseases of the digestive system October 2014 4
Diseases of the blood and blood-forming organs October 2014 4
Neoplasms November 2014 6
Disorders of the immune system December 2014 3


Interested individuals are asked to contact Jane Millar at; please include the subject line "IHTSDO Call for Clinical Experts".