| READ V2 | Codes and descriptions | | John Nolan |
| READ V3/CTV3 (2018-04-01) | Original v3 files
Compiled: lookup (1 row per concept & term combination)
Compiled parent codes | Clinical Terms (The Read Codes) Overview - April 2018 Release
Terming and Coding Update - April 2018 Release
Technical Update - April 2018 Release
Compilation R code | NHS UK Read Codes Clinical Terms Version 3 - TRUD. |
| SNOMED-CT | UK Clinical edition
UK Drug extension
Compiled lookup (1 row per concept) | SNOMED CT UK Clinical Extension Release Documents
SNOMED CT UK Drug Extension Release Documents
SNOMED Glossary, Hierarchy & Semantic Tags
Compilation R code (1 row per concept) | SNOMED CT UK Edition - TRUD. |
| SNOMED-CT (GDPPR subset) | Code, descriptions and COVID-19 clusters | See source | GDPPR: a guide for analysts and users of the data - NHS England Digital. |
| ICD-10 (4th Ed.)(2012-04-01) | Codes, Titles & Metadata | ICD-10 4th Edition: Codes and Titles and Metadata File Specification
ICD-10 4th Edition Tables of Coding Equivalences (Analysis) File Specification | NHS ICD-10 4th Edition data files - TRUD. |
| ICD-10 (5th Ed.)(2016-04-01) | Codes, Titles & Metadata | ICD-10 5th Edition: Codes and Titles and Metadata File Specification
ICD-10 5th Edition: Tables of Coding Equivalences (Analysis) File Specification | NHS ICD-10 5th Edition data files - TRUD. |
| OPCS-4.9 (2019-11-01) | Codes & Titles
Metadata | Description of files in release subpack
OPCS-4.9 Metadata File Description and how it may be used
OPCS-4.8 to OPCS-4.9 Summary of Core Changes
Table of Coding Equivalences (Analysis) Specification | OPCS-4 data files - TRUD. |
| OPCS-4.10 (2022-11-01) | Codes & Titles
Metadata | Description of files in release subpack
OPCS-4.10 Metadata File Description and how it may be used
OPCS-4.9 to OPCS-4.10 Summary of Core Changes
OPCS-4.10 Table of Coding Equivalences (Analysis) Specification | OPCS-4 data files - TRUD. |
| BNF (2023-01-01) | Codelists | Prescription data - NHSBSA | NHSBSA login. |