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Dear Members, 

The February 2019 Complete OWL file DEMONSTRATION release of the SNOMED CT® International Edition is now available to SNOMED International Members, from the MLDS distribution site.

This DEMONSTRATION release provides Members with the opportunity to have an early view of the proposed OWL file changes, in order to help our community to evaluate their tooling, systems and release processes.  The new OWL Axiom reference set (contained in the OWLExpression files) represents all stated relationships and all new description logic features, such as general concept inclusion (GCI) axioms and additional axioms.  Please note that the content modeling is still a work-in-progress and these examples are being provided for demonstration purposes only and are not necessarily reflective of content that will be in the July 2019 International Edition Release.  The complete OWL Axiom refset will be mandatory from the July 2019 release onwards.

The DEMONSTRATION release package is distributed for evaluation purposes only. It must not be used in production clinical systems or in clinical settings, or distributed to Affiliate Licensees or any third parties at this time.  

All files distributed to SNOMED International Members for the February 2019 DEMONSTRATION Release are available from the  “February 2019 v0.1 *DEMONSTRATION ONLY*” version in the “SNOMED CT International Edition” project, which can be found on the “SNOMED Releases” page in MLDS, accessed here (please ensure that you login to MLDS first): 

The SNOMED CT DEMONSTRATION release contains SNOMED CT files in Release Format 2 (RF2) only, distributed in a zipped file archive (the Release Notes are located separately in the same repository as normal):


The SNOMED CT DEMONSTRATION Release Notes can also be accessed online:

Please see the Early Visibility confluence page, to remind yourselves of all of schedule of the upcoming changes in this release:

If you have any questions about the February 2019 DEMONSTRATION release, or have difficulties downloading this file, please contact SNOMED International at with “February 2019 Complete OWL file DEMONSTRATION release question” in the subject line. 

Any feedback on the DEMONSTRATION release files must be submitted as early as possible, but certainly before 5th March 2019.

Kind regards, 

Andrew Atkinson  |  Release Manager

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