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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Total cholesterol high-density lipoprotein (HDL) codes SNOMED CT

Taken from the TCHOLHDL_COD refset published by NHSD.

Transient ischaemic attack CTV3

Codes that indicate incident or history of transient ischaemic attack. This codelist include definite and probable transient ischaemic attack. Future studies which require codes denoting definite transient ischaemic attack need to derive another codelist.

Published by OpenSAFELY
Transient ischaemic attack (TIA) codes SNOMED CT

Taken from the TIA_COD refset published by NHSD.

Transient ischaemic attack - secondary care ICD-10

This is a codelist of ICD-10 codes for TIA.

Published by OpenSAFELY
Transplant (SPL-AtRiskv4) (SNOMED CT) SNOMED CT

Taken from the Transplant (SPL-AtRiskv4) tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Transplant (SPL-HES) (OPCS4) OPCS-4

Single transplant codes only; taken from the Transplant (SPL-HES) tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Transplant - conjunctiva (SPL-HES) (OPCS4) OPCS-4

Taken from the HES transplant tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Transplant - conjunctiva Y codes (SPL-HES) (OPCS4) OPCS-4

Taken from the HES transplant tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Transplant - ileum_1 Y codes (SPL-HES) (OPCS4) OPCS-4

Taken from the HES transplant tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Transplant - ileum_1 (SPL-HES) (OPCS4) OPCS-4

Taken from the transplants HES tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Transplant - ileum_2 Y codes (SPL-HES) (OPCS4) OPCS-4

Taken from the HES transplant tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Transplant - ileum_2 (SPL-HES) (OPCS4) OPCS-4

Taken from the transplants HES tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Transplant - replacement of organ (SPL-HES) (OPCS4) OPCS-4

Taken from the HES transplant tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Transplant - stomach (SPL-HES) (OPCS4) OPCS-4

Taken from the HES transplant tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Transplant - thymus gland (SPL-HES) (OPCS4) OPCS-4

Taken from the HES transplant tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital