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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Low and medium dose single ingredient ICS inhalers dm+d
A list of low and medium dose single ingredient inhaled corticosteroid (ICS) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.
Published by OpenSAFELY
Low and medium intensity statins BNF
Used by the following [OpenPrescribing](https://openprescribing.net) measures:

* [Low and medium intensity statins](https://openprescribing.net/measure/statinintensity/)
Published by OpenPrescribing
Low density lipoprotein (LDL) cholesterol test results codes SNOMED CT
Taken from the `LDLCCHOL_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/).
Low density lipoprotein (LDL) cholesterol test results codes (obsolete) SNOMED CT
Taken from the `LDLCCHOL_COD` refset published by NHSD.
Low molecular weight heparins BNF
This codelist contains all preparations of low molecular weight heparins.
Published by OpenSAFELY
Low molecular weight heparins dm+d dm+d
This dm+d codelist contains all preparations of low molecular weight heparins.
Published by OpenSAFELY
Low normal or high body mass index (BMI) codes SNOMED CT
Taken from the `BMILMH_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/).
Lower Respiratory Tract Infection CTV3
Codes indicating a diagnosis of a lower respiratory tract infection excluding pneumonia
Published by OpenSAFELY
Lower Risk from COVID-19 codes SNOMED CT
Taken from the `NONSHIELD_COD` field in SARS-CoV2 COVID19 Vaccination Uptake Reporting Codes 20_21 v1, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021
Lower Risk from COVID-19 codes SNOMED CT
Taken from the `NONSHIELD_COD` field in SARS-CoV2 COVID19 Vaccination Uptake Reporting Codes 20_21 v1, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021
Lower respiratory tract infection - secondary care ICD-10
Identifies lower respiratory tract infections in hospital admissions.
Published by OpenSAFELY
Lung Cancer CTV3
Codes indicating a diagnosis of lung cancer
Published by OpenSAFELY
Lung Cancer (SNOMED) SNOMED CT
Automatically-generated equivalent of [Lung Cancer](/codelist/opensafely/lung-cancer/)
Published by OpenSAFELY
Lung cancer codes SNOMED CT
Taken from the `LUNGCAN_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/).
Lymecycline (tetracyclines) dm+d
Lymecycline codelist extracted from tetracyclines codelist
Published by UKHSA