Terminology products
NHS England is responsible for the UK implementation and management of SNOMED CT, the Read Codes, and other terminology products used in health and care. This includes associated tools and derivative resources.
NHS England maintains the NHS Dictionary of Medicines and Devices (dm+d) in partnership with the NHS Business Services Authority.
News and release notices
SNOMED CT UK Data Migration Workbench
A new release of item SNOMED CT UK Data Migration Workbench is available.
SNOMED CT human-readable subsets
New releases are available:
SNOMED CT UK Query Table and History Substitution Table
A new release of item SNOMED CT UK Query Table and History Substitution Table is available.
UK Drug bonus files
A new release of item UK Drug bonus files is available.
SNOMED CT UK Monolith Edition, RF2: Snapshot
A new release of item SNOMED CT UK Monolith Edition, RF2: Snapshot is available.
SNOMED CT UK Drug Extension, RF2
New releases are available:
SNOMED CT UK Clinical Edition, RF2
New releases are available:
Proposed changes to SNOMED CT to ICD-10 and OPCS-4 maps
NHS England is seeking feedback on proposed changes to SNOMED CT to ICD-10 and OPCS-4 maps.
Find out more in the document Proposed changes to SNOMED CT to ICD-10 / OPCS-4 alternative target codes and map block assignment (DOCX).
To leave feedback, complete the Microsoft Form Survey on Proposed changes to SNOMED CT to ICD-10 / OPCS-4 maps by Friday 7 August 2026.
Increasing SNOMED International description length limits
Following the Delen news article on the proposal to increase description length limits, SNOMED International has published the descriptions that will be increased beyond the previous 255-character limit in the August 2026 SNOMED CT International Edition, under item 29 here:
2026 Early Visibility Release Notifications
These descriptions will first appear in the SNOMED CT UK Edition release 43.0.0, due for publication on 30 September 2026 (see the 2026-2027 Release Schedule: SNOMED CT UK Edition page on Delen), as that release will include data from the August 2026 SNOMED CT International Edition.
Email support.digitalservices@nhs.net with any questions.
Read older news and release notices in the news archive.