TRUD, The UK Edition of SNOMED CT

The UK Edition of SNOMED CT

UK SNOMED CT releases, both UK SNOMED CT Clinical Extension and UK SNOMED CT Drug Extension, are now available in the UK SNOMED CT download area.

A complete UK Edition of SNOMED CT requires:

  • the International Release,
  • the UK SNOMED CT Clinical Extension and
  • the UK SNOMED CT Drug Extension

It should be noted that the UK Clinical Edition contains the International Release and the UK SNOMED CT Clinical Extension of SNOMED CT only.

The UK SNOMED CT releases are available in release format 1 (RF1) and now also in release format 2 (RF2). The different sub-packs now available enable selection of both the release format and content requirements. Furthermore, when selecting RF2, release types of: full, snapshot or delta are available.


Further information on release formats and RF2 release types can be found via: an introductory presentation from UKTC; the IHTSDO Technical Implementation Guide; the IHTSDO Release Format 1 Guide.


The following sub-pack(s) are now available:

  • UK SNOMED CT Clinical Edition, RF1 (UK Clinical Extension & International Release)
  • UK SNOMED CT Drug Extension, RF1 (UK Drug Extension only)
  • UK SNOMED CT Clinical Edition, RF2 - Full, Snapshot and Delta (UK Clinical Extension & International Release)
  • UK SNOMED CT Clinical Edition, RF2: Full only (UK Clinical Extension & International Release)
  • UK SNOMED CT Clinical Edition, RF2: Snapshot only (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: Full only (UK Drug Extension only)
  • UK SNOMED CT Drug Extension, RF2: Snapshot only (UK Drug Extension only)
  • UK SNOMED CT Drug Extension, RF2: Delta only (UK Drug Extension only)

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


For documentation and education resources please see our Training, Resources and Forums web page.

Definitions for UKTC Products on TRUD

1. Status=Technology Preview – definition can be found here

2. Status=Draft for Trial Use – definition can be found here

3. Status=Supported Product – definition can be found here

4. Status=Legacy Product – definition can be found here

5. Status=Deprecated - definition can be found here

6. Status=Withdrawn - definition can be found here

All the above statuses are all explained in detail in this document http://systems.hscic.gov.uk/data/uktc/snomed/governance/lifecycle.pdf

Items available to subscribers

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

SNOMED V SNOMED W SNOMED X SNOMED Y SNOMED ZSNOMED CT UK Clinical Edition in release format 2; all release types. This pack contains 6-monthly releases of the UK Clinical Extension and the International Release. Each sub-pack also includes refsets, cross-maps and added value files. All the three RF2 release types of Full, Snapshot and Delta are included.

Status: Draft for Trial Use


UK SNOMED CT Clinical Edition, RF2: Full

SNOMED V SNOMED W SNOMED X SNOMED Y SNOMED ZSNOMED CT UK Clinical Edition in release format 2, release type Full only. This pack contains 6-monthly releases of the UK Clinical Extension and the International Release. Each sub-pack also includes refsets, cross-maps and added value files. Release type Full contains every version of every component ever released.

Status: Draft for Trial Use


UK SNOMED CT Clinical Edition, RF2: Snapshot

SNOMED V SNOMED W SNOMED X SNOMED Y SNOMED ZSNOMED CT UK Clinical Edition in release format 2, release type Snapshot only. This pack contains 6-monthly releases of the UK Clinical Extension and the International Release. Each sub-pack also includes refsets, cross-maps and added value files. Release type Snapshot contains the most recent version of every component.

Status: Draft for Trial Use


UK SNOMED CT Clinical Edition, RF2: Delta

SNOMED V SNOMED W SNOMED X SNOMED Y SNOMED ZSNOMED CT UK Clinical Edition in release format 2, release type Delta only. This pack contains 6-monthly releases of the UK Clinical Extension and the International Release. Each sub-pack also includes refsets, cross-maps and added value files. Release type Delta provides just the changes between this and the last release including any new components.

Status: Draft for Trial Use


UK SNOMED CT Drug Extension: Full, Snapshot & Delta

SNOMED V SNOMED W SNOMED X SNOMED Y SNOMED ZSNOMED CT UK Drug Extension in release format 2, all release types. All the three RF2 release types of Full, Snapshot and Delta, drug only refsets and added value files are included in each sub-pack. Please note this pack does NOT include UK Clinical Extension or International Release. Releases are 4-weekly with an additional twice yearly interim release available synchronous to the 6-monthly UK Clinical Edition

Status: Draft for Trial Use


UK SNOMED CT Drug Extension, RF2: Full

SNOMED V SNOMED W SNOMED X SNOMED Y SNOMED ZSNOMED CT UK Drug Extension in release format 2, release type Full only. RF2 release type Full, drug only refsets and added value files are included in each sub-pack. Please note this pack does NOT include UK Clinical Extension or International Release. Releases are 4-weekly with an additional twice yearly interim release available synchronous to the 6-monthly UK Clinical Edition.

Status: Draft for Trial Use


UK SNOMED CT Drug Extension, RF2: Snapshot

SNOMED V SNOMED W SNOMED X SNOMED Y SNOMED ZSNOMED CT UK Drug Extension in release format 2, release type Snapshot only. RF2 release type Snapshot, drug only refsets and added value files are included in each sub-pack. Please note this pack does NOT include UK Clinical Extension or International Release. Releases are 4-weekly with an additional twice yearly interim release available synchronous to the 6-monthly UK Clinical Edition.

Status: Draft for Trial Use


UK SNOMED CT Drug Extension, RF2: Delta

SNOMED V SNOMED W SNOMED X SNOMED Y SNOMED ZSNOMED CT UK Drug Extension in release format 2, release type Delta only. RF2 release type Delta, drug only refsets and added value files are included in each sub-pack. Please note this pack does NOT include UK Clinical Extension or International Release. Releases are 4-weekly with an additional twice yearly interim release available synchronous to the 6-monthly UK Clinical Edition.

Status: Draft for Trial Use


UK SNOMED CT Clinical Edition, RF1

SNOMED V SNOMED W SNOMED X SNOMED Y SNOMED ZSNOMED CT UK Clinical Edition in release format 1. This pack contains 6-monthly releases of the UK Clinical Extension and the International Release. Each sub-pack also includes subsets, the developer’s toolkit and other added value files. Please note: SNOMED CT RF1 cross-map files are also contained in the NHS_SNOMEDXMAP sub-pack in NHS SNOMED CT Cross-maps in UKTC SNOMED.


Important Notice - Information on the cessation of SNOMED CT in Release Format 1 and the provision of release files only in Release Format 2 can be found here.


Status: Supported


UK SNOMED CT Drug Extension, RF1

SNOMED V SNOMED W SNOMED X SNOMED Y SNOMED ZSNOMED CT UK Drug Extension in release format 1. Please note this pack does NOT include UK Clinical Extension or International Release. Releases are 4-weekly with an additional twice yearly interim release available synchronous to the 6-monthly UK Clinical Edition.


Important Notice - Information on the cessation of SNOMED CT in Release Format 1 and the provision of release files only in Release Format 2 can be found here.


Status: Supported


UK SNOMED CT Clinical Edition, RF1 Cross-maps

SNOMED CT UK release cross maps in SNOMED CT release format 1. This sub pack includes the cross maps to OPCS4.x and the UK approved version of ICD10.


Important Notice - Information on the cessation of SNOMED CT in Release Format 1 and the provision of release files only in Release Format 2 can be found here.


Status: Supported