Mapping Tables

These mapping tables are used to facilitate the translation of codelists from one terminology/classification into another. Please note translation is only valid in one direction.

From	To	Mapping files (Box)	Documentation	Source
READ V2	SNOMED-CT	RcSctMap2 (2020-04-01) RcSctMap (2020-04-01) RsSCtMap_enhanced (2020-04-01) RCTermSctMap (2020-04-01) RCMap (2020-04-01)	Data Migration Subpack. The availability of concept and term IDs in the codelist to be mapped will determine which mapping file and methodology to use. Guidance in documentation.	NHS Data Migration - TRUD
READ V2	CTV3	RctCtv3Map (2020-04-01)	Data Migration Subpack.	NHS Data Migration - TRUD
CTV3	SNOMED-CT	RctSctMap2 (2020-04-01)	Data Migration Subpack.	NHS Data Migration - TRUD
CTV3	READ V2	Ctv3RctMap (2020-04-01)	April 2018 Release Contents.	NHS Data Migration - TRUD
CTV3	ICD-9/ICD-10	v3 files (2018-04-01)	Data Migration Subpack.	NHS UK Read Codes Clinical Terms Version 3, Cross Maps - TRUD
SNOMED-CT	OPCS-4.8	Mapping file (2021-03-24)	SNOMED CT to ICD-10 and OPCS-4 Retired Reference Sets.	SNOMED CT UK Clinical Edition Cross-map Historical Files, RF2: Full - TRUD
SNOMED-CT	ICD-10 (4th ed)	Mapping file (2018-10-01)	SNOMED CT to ICD-10 and OPCS-4 Retired Reference Sets.	SNOMED CT UK Clinical Edition Cross-map Historical Files, RF2: Full - TRUD
BNF	SNOMED-CT	Mapping file (2022-10-17)	BNF/SNOMED Guidance Document.	BNF SNOMED mapping - NHSBSA