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SNOMED CT is distributed to IHTSDO Members and Affiliate Licensees as a set of downloadable files. Those wishing to implement SNOMED CT in software applications should understand the release schedule and the structure and content of the release files. Users should be aware that regular updates of SNOMED CT are made available and should be used in their systems to benefit from continuous improvements to coverage and quality.
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The SNOMED CT International Edition is currently released twice a year on the 31st of January and the 31st of July. The release files are made available to Members in advance of the formal release date and Affiliate Licensees gain access either through their National Member or via the IHTSDO SNOMED International Affiliate Licensing system. Many IHTSDO Members supplement the International Edition with releases of their national Extension. The Extensions may be released at the same time as the International Edition but in some cases are released on different dates and at different intervals.
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