DateFebruary 29, 2024


AccessTerminology Gateway
Code SystemSNOMED CT CA Edition
Code System VersionFebruary 29, 2024
Release TypeMaintenance

The SNOMED CT Canadian Edition package includes one (1) set of files for referencing the Canadian English (CA EN), Canadian French (CA FR), and Canadian refsets, and International Edition release content up to and including the February 2024 release. Package contents have been pre-computed and harmonized based on the module dependency when several extensions are merged. 

The package is a .zip file that includes text files in the RF2 format as per the SNOMED International specification. The CA Edition contains two (2) release types: full and snapshot. To align with SNOMED International releases, the package no longer includes a delta release type. Each type of release file includes reference set files and terminology core files.

Release notes for the International Edition can be accessed here

Release Scope

  1. Requests for change received from Canadian implementers from September 2, 2023 to February 2, 2024 - InfoRMS SNOMED CT RFC Project
    1. Requests to add, change or inactivate content in both English and French. 
    2. Content corrections (typographical errors, metadata, others).  
    3. CA EN concepts promoted to the International Edition of SNOMED CT.
    4. In the Release Notes, "Issues in progress" refers to requests that were accepted and added to the most recent Canadian Edition, but they also have been submitted to SNOMED International for consideration for core inclusion. If accepted, they are in scope for inclusion in the International Edition and will be assigned to a release by SNOMED International and will require harmonization with the next CA Edition release.

  2. Subsets - InfoRMS Subset RFC Project 
    1. Pan-Canadian SNOMED CT subsets in scope for this maintenance cycle include: Immunization, Communicable Disease, Primary Health Care and others.
    2. 29 SNOMED CT subsets (refsets) are published as extensional refsets in the Canadian Edition (Canada Health Infoway Simple Type Reference Set (foundation metadata concept)).
    3. 23 of 52 subsets are expanded type subsets that are intensionally defined (i.e. defined using queries). These can be found as members of the Simple query specification reference set (foundation metadata concept). See below printscreen.

Notes for this Release:

  1. New vaccine concepts to support the ongoing work for Immunization.
  2. Release notes for International releases including the International Edition and the Common French extension are no longer included in the Canadian Edition release package. International release notes can be accessed here and Common French release notes can be accessed here.
  3. Inclusion of concepts that originated in other national extensions and were promoted to core because they also meet Canadian requirements and, as such, meet the international use case (lateral promotion).
  4. Two (2) new subsets were created to support the new National Vaccine Catalogue (NVC).
  5. In line with the new implementation of Annotations, two new refsets have been added to the International Edition Release package, from December 2023 onwards:
    These refset files are empty for the February 2024 release, whilst content is authored in future editing cycles. However, they will then be populated with Annotations data from one of the future 2024 International Edition releases onwards (date to be confirmed). These improvements were introduced in the December 2023 International Edition release, and will be used in all future International Edition releases until further notice.
  6. French translation to support Canadian implementations, including: ongoing immunization work; the Canadian Institute for Health Information (CIHI) pan-Canadian Health Data Content Framework (pCHDCF) and Primary Health Care projects; Ontario Health’s Lab Information System (OLIS) and Provincial Health Service Directory (PHSD); other projects from Ministère de la Santé et des Services sociaux du Québec (MSSS) such as CNESST, CISSSMO, PTI and Synoptic colonoscopy report.

Refer to section 5. Questions and Comments, for additional information about SNOMED CT or if you have comments.

Refer to section 6. Requests for Change (RFC), for additional information on how to request terminology content or subsets. 

Refer to section 7. Updates and Publications, for dates and times related to publication.

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