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January 2018 SNOMED CT International Edition Release Available

The Production release of the January 2018 SNOMED CT® International Edition is now available to everyone from the MLDS distribution site. As with all releases, a rigorous quality assurance process was completed both during the authoring cycle by the content team as well as during the release period by the release team and participating Members.

This represents a considerably higher number of changes to existing content from July’s release of 15,993 to 21,080. While volume is not the only indicator with which we measure success, it does demonstrate the scale of effort invested from SNOMED International’s content and technical teams. Additional content means considerably more time needed to do quality validation, as well as increased risk of possible issues requiring mitigation.


All files distributed for the January 2018 International Edition are available from the  “January 2018 v1.0” version in the “SNOMED CT International Edition” project, which can be found on the “IHTSDO Releases” page in MLDS, accessed here:


The SNOMED CT International Edition contains SNOMED CT files in Release Format 2 (RF2) only, distributed in a zipped file archive:



The Release Notes and OWL Resource file have been separated from the International Edition release package, and can be downloaded as distinct files from the same MLDS release version:

  • doc_SnomedCTReleaseNotes_Current_en-US_INT_20180131.pdf


The SNOMED CT International Edition Release Notes can also be accessed online:


Those Members using MLDS as their distribution site will find that their affiliates have access to the new release automatically.


All vendors and affiliates should please contact their National Release Centre (NRC) for information on when the latest release package will be available for download from the NRC website.  Contact details for all NRC's can be found here -


If you have any questions about the January 2018 International Edition, or have difficulties downloading the files from the distribution site, please contact SNOMED International at with “January 2018 International Edition release question” in the subject line.   


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