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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Thyroid function (TSH level) SNOMED CT
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Published by Ardens
Thyroid function test codes SNOMED CT
Taken from the `TFT_COD` refset published by NHSD. Contains public sector information licensed under the UK Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
Thyroid stimulating hormone (TSH) testing SNOMED CT
This codelist was developed to identify patients receiving a thyroid-stimulating hormone (TSH) test
Published by OpenSAFELY
Thyroid stimulating hormone (TSH) tests (numerical value) SNOMED CT
This codelist was developed to identify patients receiving a thyroid-stimulating hormone (TSH) test, with a numerical value.
Published by OpenSAFELY
Toothpaste BNF
Used by the following [OpenPrescribing](https://openprescribing.net) measures:

* [Toothpaste Prescribing](https://openprescribing.net/measure/toothpaste/)
Published by OpenPrescribing
Total IgE level codes SNOMED CT
Taken from the `IGE_COD` refset published by NHSD. Contains public sector information licensed under the UK Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
Total cholesterol codes SNOMED CT
Taken from the `CHOL_COD` refset published by NHSD. Contains public sector information licensed under the UK Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
Total cholesterol codes with a value SNOMED CT
Taken from the `CHOL2_COD` refset published by NHSD. Contains public sector information licensed under the UK Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
Total cholesterol high-density lipoprotein (HDL) codes SNOMED CT
Taken from the `TCHOLHDL_COD` refset published by NHSD. Contains public sector information licensed under the UK Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
Total colectomy procedure codes SNOMED CT
Taken from the `TOTCOLECT_COD` refset published by NHSD. Contains public sector information licensed under the UK Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
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. Contains public sector information licensed under the UK Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
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