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SNOMED CT UK Edition

Find detailed information on SNOMED CT and derivative products on Delen.

A complete UK Edition of SNOMED CT contains the most recent:

  • Biannual International release
  • Biannual UK SNOMED CT Clinical Extension
  • 4-weekly UK SNOMED CT Drug Extension

The UK Edition of SNOMED CT is published in Release Format 2 (RF2) only.

The UK Clinical Edition contains only the International release and the UK SNOMED CT Clinical Extension of SNOMED CT.

  • UK SNOMED CT Clinical Edition, RF2: Full, Snapshot and Delta (UK Clinical Extension & International release)
  • UK SNOMED CT Clinical Edition, RF2: Delta only (UK Clinical Extension & International release)
  • UK SNOMED CT Drug Extension, RF2: Full, Snapshot and Delta (UK Drug Extension only)
  • UK SNOMED CT Drug Extension, RF2: Delta only (UK Drug Extension only)

Each release contains release notes which describe the new and changed items in the release.

Products from the UK Terminology Centre have one of these statuses:

  • In Development
  • Technology Preview
  • Draft for Trial Use
  • Supported Product
  • Deprecated
  • Retired

Read the IReS Terminology Product Development Lifecycle (external PDF) for explanations of these statuses.

Email questions or feedback to information.standards@nhs.net.

Items in this category

UK SNOMED CT Clinical Edition Cross-map Historical Files, RF2: Full

Retired cross-map RF2 files, Full release type only.

There is a release per retired cross-map containing the extended map reference set release file and associated documentation.

The data contained within the releases are for reporting or data warehousing - the maps should not be used for live data processing. Active cross-maps can be found in the main Clinical Edition RF2 releases.

Status: Supported Product


  • Releases (4)
  • Licences (3)

UK SNOMED CT Clinical Edition, RF2: Delta

SNOMED CT UK Clinical Edition in Release Format 2 (RF2), release type Delta only.

6-monthly releases of the UK Clinical Extension and the International release. Each release also includes refsets, cross-maps and added-value files.

Release type Delta provides only the changes between this and the last release, including any new components.

Find SNOMED CT UK Clinical Extension release documentation and SNOMED CT UK Edition product information on Delen.

Status: Supported Product


  • Releases (11)
  • Licences (3)

UK SNOMED CT Clinical Edition, RF2: Full, Snapshot & Delta

SNOMED CT UK Clinical Edition in Release Format 2 (RF2) - all release types.

6-monthly releases of the UK Clinical Extension and the International release. Each release also includes refsets, cross-maps and added-value files.

All RF2 release types – Full, Snapshot and Delta – are included.

Find SNOMED CT UK Clinical Extension release documentation and SNOMED CT UK Edition product information on Delen.

Status: Supported Product


  • Releases (11)
  • Licences (3)

UK SNOMED CT Drug Extension, RF2: Delta

SNOMED CT UK Drug Extension in Release Format 2 (RF2), release type Delta only.

RF2 release type Delta, drug-only refsets and added-value files are included in each release.

Releases are 4-weekly with an additional twice-yearly interim release available synchronous to the 6-monthly UK Clinical Edition.

Find SNOMED CT UK Drug Extension release documentation and SNOMED CT UK Edition product information on Delen.

These releases do not include the UK Clinical Extension or International release.

Status: Supported Product


  • Releases (23)
  • Licences (1)

UK SNOMED CT Drug Extension, RF2: Full, Snapshot & Delta

SNOMED CT UK Drug Extension in Release Format 2 (RF2), all release types.

All RF2 release types (Full, Snapshot and Delta), drug-only refsets and added-value files are included in each release.

Releases are 4-weekly with an additional twice-yearly interim release available synchronous to the 6-monthly UK Clinical Edition.

Find SNOMED CT UK Drug Extension release documentation and SNOMED CT UK Edition product information on Delen.

These releases do not include the UK Clinical Extension or International release.

Status: Supported Product


  • Releases (23)
  • Licences (1)

UK SNOMED CT test releases

Releases of new or updated terminology and classification products, or their derivatives, in draft, beta, preview and proof-of-concept form.

These releases give implementors and suppliers previews of updates and developments.

Materials made available here are for evaluation only and might never transition to production versions.

Email questions or feedback to information.standards@nhs.net.

Status: Technology Preview


  • Releases (20)
  • Licences (4)

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