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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sick-notes-snomed SNOMED CT
Published by OpenSAFELY
to represent household contact of shielding individual SNOMED CT

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

© PRIMIS - the University of Nottingham 2021

type of residence SNOMED CT

Taken from the RESIDE_COD fields in SARS-CoV2 (COVID-19) Vaccine Uptake Reporting Codes v.1.5.3

venous thromboembolism ICD-10 ICD-10

Codes to define venous thromboembolism in ONS death data.

Published by OpenSAFELY
venous-thromboembolic-disease-hospital ICD-10

Codes to define venous thromboembolic disease in hospital.

Published by OpenSAFELY