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 that have been used in OpenSAFELY research to date.

All codelists


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COVID identification in primary care - probable covid - positive test CTV3

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Published by OpenSAFELY
COVID identification in primary care - probable covid - positive test SNOMED SNOMED CT

Codes indicating COVID-19 case (SNOMED mapping of 1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Published by OpenSAFELY
COVID identification in primary care - probable covid - sequelae CTV3

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Published by OpenSAFELY
COVID identification in primary care - suspected covid - advice CTV3

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Published by OpenSAFELY
COVID identification in primary care - suspected covid - had test CTV3

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Published by OpenSAFELY
COVID identification in primary care - suspected covid - isolation code CTV3

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Published by OpenSAFELY
COVID identification in primary care - suspected covid - nonspecific clinical assessment CTV3

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Published by OpenSAFELY
COVID identification in primary care - suspected covid - suspected codes CTV3

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Published by OpenSAFELY
COVID identification in primary care - unrelated to case status CTV3

Codes indicating COVID-19 case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)

Published by OpenSAFELY
COVID vaccination contraindication codes SNOMED CT

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

© PRIMIS - the University of Nottingham 2021

COVID vaccination contraindication codes SNOMED CT

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

© PRIMIS - the University of Nottingham 2021

COVID-19 A&E diagnosis codes SNOMED CT

SNOMED diagnosis codes for identifying people presenting to A&E with COVID-19. These codes are intended for use with NHS Emergency Care Data Set (ECDS) data only. Note that 1240751000000100 is deprecated as of 31 March 2022. The other three codes (1325171000000109, 1325181000000106, 1325161000000102) were introduced on 1 July 2021.

Published by OpenSAFELY
COVID-19 Exclusion (Primary Care) - Maximal Sensitivity SNOMED CT

Exclusion criteria for identifying COVID-19 in primary care when using a maximally sensitive codelist. This codelist has been created to be used in research where you are aiming to identify cases of COVID-19 in primary care using a maximally sensitive codelist (see references) and must then use an exclusion criteria to ensure you are not identifying patients incorrectly.

Published by OpenSAFELY
COVID-19 Exclusion (Secondary Care) - Maximal Sensitivity ICD-10
Published by OpenSAFELY
COVID-19 Identification (Prescriptions) - Maximal Sensitivity - dmd dm+d
Published by OpenSAFELY