SNOMED CT United States Edition
The SNOMED CT United States (US) Edition is the official source of SNOMED CT for use in US healthcare systems. The US Edition is a standalone release that combines the content of both the US Extension and the International releases of SNOMED CT. NLM distributes the US Edition of SNOMED CT to licensed individuals via the UMLS Terminology Services. Please see the Licensing page to learn more about licensing and how to register to obtain an Affiliate License.
For additional information regarding ONC Regulations please see this ONC FAQ.
For older versions of the US Edition of SNOMED CT, please see the SNOMED CT Archives page.
Current US Edition Release
NOTE: For the latest SNOMED CT SARS-CoV-2/COVID-19 content, see: http://snomed.org/covid-19
Release Date: September 1, 2023
The September 2023 SNOMED CT United States (US) Edition release is now available for download. This release contains 163 new active concepts specific to the US Extension. The September 2023 US Edition of SNOMED CT is based on the content published in the June 2023 SNOMED CT International Edition and includes any SNOMED CT COVID-19 Related Content published in the June 2023 SNOMED CT International Edition. This latest version of the US Edition also includes the SNOMED CT to ICD-10-CM reference set, with over 126,000 SNOMED CT source concepts mapped to ICD-10-CM targets.
Please note - Due to the move to monthly SNOMED CT International Edition releases, NLM will base the March US Edition of SNOMED CT on the December SNOMED CT International Edition and the September US Edition of SNOMED CT on the June SNOMED CT International Edition. Any changes to this plan will be announced via the NLM SNOMEDCT Announces listserv.
Please note - While the SNOMED CT International Edition has moved to monthly releases, the US Edition of SNOMED CT will remain on the current bi-annual release schedule of March and September.
MD5 hash: c52817c6b0d795b357e6522e37d0422a
MD5 hash: 4397223266ce2d6518e833a94bb1a5ec
MD5 hash: 60345fb7c522ecd85a1b2e4c678a149f
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Announcement - Changes in the September 2023 US Edition release
Deprecation of the ICD10 Exemplar file
Due to the perceived lack of audience for this file, the US have deprecated it by removing it from the ICD10CM Map Resources package from the September 2023 US Edition Release onwards.
Deprecation of the Route of administration reference set from the US Edition release package
The Route of Administration refset is being deprecated from the US Edition release package, as of the September 2023 US Edition release onwards.
The concept "442311000124105 |Route of administration reference set (foundation metadata concept)|" + relates components (including the refsetDescriptor record) will remain active, however all 144 records that comprise this refset will be inactivated in the SimpleRefset file: der2_Refset_SimpleSnapshot_US1000124_20230901.txt
In order to preserve the historical audit trail within the US Edition release package, the records will be inactivated (set the "active=0") rather than being deleted from the package completely.
The Route of Administration reference set is still accessible as an intensional value set in the Value Set Authority Center (VSAC): https://vsac.nlm.nih.gov/valueset/2.16.840.1.113722.214.171.1248.98/expansion
SNOMED CT Downloads
NLM SNOMED CT Resources
Last Reviewed: April 7, 2020