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Table of Contents: 2019 SEPTEMBER–OCTOBER No. 430

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September 2019 SNOMED CT US Edition

September 2019 SNOMED CT US Edition. NLM Tech Bull. 2019 Sep-Oct;(430):b2.

2019 September 04 [posted]

The National Library of Medicine (NLM) is pleased to announce the September 2019 SNOMED CT United States (US) Edition release ( is available for download by UMLS Licensees.

Information regarding important changes in the September 2019 US Edition is available on the SNOMED CT US Edition page.

To download the release, you must have a UMLS Terminology Services login and agree to the UMLS Metathesaurus License. To learn more about the license and to sign up for an account, please see the SNOMED CT License page for additional information. Any inquiries may be sent to the NLM Support Center.

Please Note — File Changes Expected in the March 2020 US Edition
To continue to align with the SNOMED CT International Edition, the following changes will be implemented starting with the March 2020 US Edition. These changes will allow for the continued efforts towards having a zip file including only data with additional supplemental documentation and artifacts available separately.

  • Deprecation of the Resources folder
    • This aligns with the SNOMED CT International Edition release package which no longer includes a Resources folder.
  • Removal of Transitive Closure resources from the US Edition release zip file
    • The Transitive Closure resources will be made available alongside the US Edition of SNOMED CT as a bundled zip download. The following resources will be updated and bundled together and made available with each new US Edition release:
      • res2_TransitiveClosure_US1000124_YYYYMMDD.txt

Any questions or comments regarding these upcoming changes can be sent to NLM Customer Support

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