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 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
Lymphoproliferative disorders SNOMED CT
Taken from the `LYMPHOPROLDIS_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/).
Lyrica capsules BNF
Used by the following [OpenPrescribing](https://openprescribing.net) measures:

* [Pregabalin capsules prescribed as Lyrica](https://openprescribing.net/measure/lyrica/)
Published by OpenPrescribing
MMR first dose vaccination codes SNOMED CT
Taken from the `MMRVAC1_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/).
MMR second dose vaccination codes SNOMED CT
Taken from the `MMRVAC2_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/).
MMR vaccination contraindication codes SNOMED CT
Taken from the `MMRCON_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/).
MMR vaccination given by other healthcare provider codes SNOMED CT
Taken from the `MMROHPVAC_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/).