---
layout: default
title: Lookup Tables
nav_order: 1
parent: Code Terminology Resource
grand_parent: Resources
permalink: /resources/code_terminology/lookup_tables
---
## Lookup Tables
| System | Lookup files (Box) | Documentation | Source |
| --- | --- | --- | --- |
| READ V2 | [Codes and descriptions](https://hdruk.app.box.com/folder/180333787939) | | John Nolan |
| READ V3/CTV3 (2018-04-01) | [Original v3 files](https://hdruk.app.box.com/folder/176836413615)
[Compiled: lookup (1 row per concept & term combination)](https://hdruk.app.box.com/file/1059736906262)
[Compiled parent codes](https://hdruk.app.box.com/file/1059710246796) | [Clinical Terms (The Read Codes) Overview - April 2018 Release](https://hdruk.app.box.com/file/1037479195645)
[Terming and Coding Update - April 2018 Release](https://hdruk.app.box.com/file/1037489251919)
[Technical Update - April 2018 Release](https://hdruk.app.box.com/file/1037482221795)
[Compilation R code](https://hdruk.app.box.com/file/1059734265976) | NHS UK Read Codes Clinical Terms Version 3 - TRUD. |
| SNOMED-CT | [UK Clinical edition](https://hdruk.app.box.com/folder/176837745907)
[UK Drug extension](https://hdruk.app.box.com/folder/176839090369)
[Compiled lookup (1 row per concept)](https://hdruk.app.box.com/file/1059733222603) | [SNOMED CT UK Clinical Extension Release Documents](https://nhsengland.kahootz.com/connect.ti/t_c_home/browseFolder?fid=16607376)
[SNOMED CT UK Drug Extension Release Documents](https://nhsengland.kahootz.com/connect.ti/t_c_home/view?objectId=14540272)
[SNOMED Glossary, Hierarchy & Semantic Tags](https://hdruk.app.box.com/file/1060661938054)
[Compilation R code (1 row per concept)](https://hdruk.app.box.com/file/1059735084291) | SNOMED CT UK Edition - TRUD. |
| SNOMED-CT (GDPPR subset) | [Code, descriptions and COVID-19 clusters](https://hdruk.app.box.com/file/1059663377904) | 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](https://hdruk.app.box.com/file/1037484036694) | [ICD-10 4th Edition: Codes and Titles and Metadata File Specification](https://hdruk.app.box.com/file/1037490010209)
[ICD-10 4th Edition Tables of Coding Equivalences (Analysis) File Specification](https://hdruk.app.box.com/file/1037481397009) | NHS ICD-10 4th Edition data files - TRUD. |
| ICD-10 (5th Ed.)(2016-04-01) | [Codes, Titles & Metadata](https://hdruk.app.box.com/file/1037486223581) | [ICD-10 5th Edition: Codes and Titles and Metadata File Specification](https://hdruk.app.box.com/file/1037489434237)
[ICD-10 5th Edition: Tables of Coding Equivalences (Analysis) File Specification](https://hdruk.app.box.com/file/1037480201574) | NHS ICD-10 5th Edition data files - TRUD. |
| OPCS-4.9 (2019-11-01) | [Codes & Titles](https://hdruk.app.box.com/file/1037485318682)
[Metadata](https://hdruk.app.box.com/file/1037486609941) | [Description of files in release subpack](https://hdruk.app.box.com/file/1037485467081)
[OPCS-4.9 Metadata File Description and how it may be used](https://hdruk.app.box.com/file/1037485046922)
[OPCS-4.8 to OPCS-4.9 Summary of Core Changes](https://hdruk.app.box.com/file/1037482589769)
[Table of Coding Equivalences (Analysis) Specification](https://hdruk.app.box.com/file/1037479522678) | OPCS-4 data files - TRUD. |
| OPCS-4.10 (2022-11-01) | [Codes & Titles](https://hdruk.app.box.com/file/1055092984927)
[Metadata](https://hdruk.app.box.com/file/1055093563775) | [Description of files in release subpack](https://hdruk.app.box.com/file/1055082432323)
[OPCS-4.10 Metadata File Description and how it may be used](https://hdruk.app.box.com/file/1055090796418)
[OPCS-4.9 to OPCS-4.10 Summary of Core Changes](https://hdruk.app.box.com/file/1055089150569)
[OPCS-4.10 Table of Coding Equivalences (Analysis) Specification](https://hdruk.app.box.com/file/1055090585629) | OPCS-4 data files - TRUD. |
| BNF (2023-01-01) | [Codelists](https://hdruk.app.box.com/folder/183926885744) | [Prescription data - NHSBSA](https://www.nhsbsa.nhs.uk/prescription-data) | NHSBSA login. |