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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Temporary Immunosuppression CTV3

Codes indicating a diagnosis of a temporary immunosuppression.

Published by OpenSAFELY
Temporary Immunosuppression (SNOMED) SNOMED CT

Automatically-generated equivalent of Temporary Immunosuppression

Published by OpenSAFELY
Teratogenic medicines dm+d

In this codelist we aim to identify teratogenic drugs. A teratogen is a substance that can cause abnormalities or birth defects in a developing fetus.

The CQC routinely review the use of the following drugs, in female patients between the age of 8 and 55 years old Valproate Carbimazole Modafinil Pregabalin Topiramate.

There are other drugs that are considered teratogenic but only these five are considered here.

Published by OpenSAFELY
Tetracycline (tetracyclines) dm+d

Tetracycline codelist extracted from tetracyclines codelist

Published by UKHSA
Tetracyclines (antibacterials) dm+d

Tetracyclines codelist extracted from antibacterials codelist (https://www.opencodelists.org/codelist/opensafely/antibacterials/27089eaa/)

Published by UKHSA
Thiazide type diuretic medication dm+d

The codelist contains medicines that are thiazide diuretics from the "thiazides and related diuretics" section of BNF codes.

Published by OpenSAFELY
Third, fourth, fifth primary COVID vaccination dose SNOMED CT

Taken from the DOSE345_COD fields in SARS-CoV2 (COVID-19) Vaccine Uptake Reporting Codes v.1.5.3

Thyroid Function Tests SNOMED CT

Taken from the TFT_COD field in the National PINCER Data Specification, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021

Published by PINCER
Thyroid function (TSH level) SNOMED CT

...

Published by Ardens
Thyroid function test codes SNOMED CT

Taken from the TFT_COD refset published by NHSD.

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 measures:

Published by OpenPrescribing
Total cholesterol codes SNOMED CT

Taken from the CHOL_COD refset published by NHSD.

Total cholesterol codes with a value SNOMED CT

Taken from the CHOL2_COD refset published by NHSD.