OpenCodelists

Welcome to OpenCodelists, created by OpenSAFELY for creating and sharing codelists.

Anybody can also use this tool to create and share codelists. To get started, take a look at the documentation or watch the videos.

If you would like to publish codelists on behalf of an organisation, please get in touch.

Below, you'll find all the codelists we have used in OpenSAFELY research to date.

All codelists


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Venous thromboembolism (current) by type - secondary care and mortality data ICD-10

ICD-10 codelist for any history of venous thromboembolism.

This differs from the existing OpenSAFELY codelist incident VTE by including codes that specify the event occured during pregnancy or post partum, and post thrombotic syndrome, and by further clarifying type (site) of VTE.

Published by OpenSAFELY
Vitamin D Prescription BNF

Codelist created by Liang-Yu Lin using the SNOMED - BNF mapping tool provided by NHS for publication '"The Association between Vitamin D and Incident Herpes Zoster: A UK Biobank Study"

https://github.com/liang-yu12/ukbvdhzpublish/blob/376501dfbb670fe351337480024539fb0dd06877/codelists/exposurevitddrug/vitddrugdmd.csv

Published by OpenSAFELY
Vitamin D level SNOMED CT

...

Published by Ardens
Vitamin K antagonist contraindicated codes SNOMED CT

Taken from the VITKANTAGCON_COD refset published by NHSD.

Waist circumference measured SNOMED CT

Taken from the WAIST_COD refset published by NHSD.

Warfarin dm+d

This is a codelist to identify all warfarin preparations in the NHS dictionary of medicines and devices.

Published by OpenSAFELY
Wegener’s vasculitis codes SNOMED CT

Taken from the WEGENERVASC_COD refset published by NHSD.

Weight (SNOMED) SNOMED CT

Returns body weight measurements.

Published by OpenSAFELY
Weight management intervention codes SNOMED CT

Taken from the WTMGINT_COD refset published by NHSD.

Weight measured SNOMED CT

Taken from the NDAWEIGHT_COD refset published by NHSD.

Weight measured codes SNOMED CT

Taken from the NDAWEIGHT_COD refset published by NHSD.

White - Any other White background Ethnicity SNOMED CT

Taken from the ETH2001_WHIOTHER_COD field in SARS-CoV2 COVID19 Vaccination Uptake Reporting Codes 20_21 v1, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021

White - Any other White background Ethnicity SNOMED CT

Taken from the ETH2001_WHIOTHER_COD field in SARS-CoV2 COVID19 Vaccination Uptake Reporting Codes 20_21 v1, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021

White Any other White background ethnicity group codes (2016 grouping) SNOMED CT

Taken from the ETH2016WO_COD refset published by NHSD.

White Any other White background ethnicity group codes (NHS Digital 2016 grouping) SNOMED CT

Taken from the ETH2016WO_COD refset published by NHSD.