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 human-readable subsets
New releases are available:
Aligning the SNOMED CT UK Drug Extension model with SNOMED International
Following the Delen news article on the phase 3 and 4 changes to the SNOMED CT UK Drug Extension, NHS England will go live with the phase 3 and 4 changes as a joint release in 42.1.0, due for publication on Wednesday 13 May 2026.
For more information, see NHS England's updating the SNOMED CT UK Drug Extension model page.
Email nhsdigital.ukmeds@nhs.net to discuss this work.
Increasing SNOMED International description length limits
Following the Delen news article on the proposal to increase description length limits, SNOMED International has published a briefing note, available on Delen:
MF Briefing Note - Transition plan for Description Type length limits
A blog post with more information is available on the SNOMED International website:
Email support.digitalservices@nhs.net with any questions.
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:
SNOMED International rationalisation of Unit of Measure concepts
SNOMED International is making changes to 2 overlapping hierarchies:
- 732935002 |Unit of presentation|
- 408102007 |Unit dose (qualifier value)|
These changes will result in the inactivation of duplicate concepts across both sub-hierarchies. Both sub-hierarchies are subtypes of 767524001 |Unit of measure (qualifier value)|.
Read more about these changes on Delen (opens in new tab).
Some affected "Unit of product usage" concepts are used in the NHS dictionary of medicines and devices (dm+d) as Units of Measure.
NHS England is seeking feedback from dm+d and SNOMED CT Drug Extension users to understand the potential impact on systems, workflows, processes and end users. Your input will help NHS England plan and implement any changes effectively.
Complete the survey (opens in new tab) by 5pm on Friday 24 April 2026.
If you have any questions or would like to discuss this further, contact information.standards@nhs.net.
Read older news and release notices in the news archive.