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 booster admin code (earliest) SNOMED CT
Taken from the `E_BOOST_COD` fields in SARS-CoV2 (COVID-19) Vaccine Uptake Reporting Codes v.1.5.3
COVID booster admin code (latest) SNOMED CT
Taken from the `L_BOOST_COD` fields in SARS-CoV2 (COVID-19) Vaccine Uptake Reporting Codes v.1.5.3
COVID identification in primary care - antigen test negative CTV3
Codes indicating COVID-19 antigen test negative (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)
Published by OpenSAFELY
COVID identification in primary care - historic case CTV3
Codes indicating COVID-19 historic case (1 of 13 possible types of CTV3 codes that contain information related to COVID-19)
Published by OpenSAFELY
COVID identification in primary care - potential historic case 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 - clinical 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 - 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