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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Leflunomide BNF
Published by OpenSAFELY
Leflunomide dmd dm+d
dm+d codelist for Leflunomide
Published by OpenSAFELY
Left foot amputation codes SNOMED CT
Taken from the `AMPL_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/).
Left sided mastectomy codes SNOMED CT
Taken from the `MASTECLEFT_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/).
Leukotriene receptor antagonist medication dm+d
A list of leukotriene receptor antagonists (LTRA) preparations at VMP and AMP from the NHS Dictionary of Medicines and Devices.
Published by OpenSAFELY
Levetiracetam tablets BNF
Used by the following [OpenPrescribing](https://openprescribing.net) measures:

* [Levetiracetam prescribed as Keppra](https://openprescribing.net/measure/keppra/)
Published by OpenPrescribing
Levomepromazine - Subcutaneous dm+d
This codelist contains all subcutaneous formulations of levomepromazine
Published by OpenSAFELY
Levothyroxine dm+d
The codelist contains all oral formulations of levothyroxine.
Published by OpenSAFELY
Lewy body (Dementia) (SNOMED) V1 SNOMED CT
Lewy body dementia codes SNOMED CT
Taken from the `DEMLEWY_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/).
Licensed beta-blocker prescription codes dm+d
Taken from the `LBB_COD` NHS drug refset. Contains public sector information licensed under the UK Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
Published by NHS Drug Refsets
Lifestyle SNOMED CT
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Published by Ardens
Lifestyle advice codes SNOMED CT
Taken from the `LSADV_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/).
Lifestyle intervention and advice codes SNOMED CT
Taken from the `LIFESTYLEINT_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/).
Limb amputation - Amputation of arm (X07) OPCS-4
Procedure category: Limb amputation - Total or partial amputation or disarticulation of the upper or lower limbs, including digits Wound class: Amputations where the limb is ischaemic, or where dry gangrene is present should be classified as clean. Amputations through, or adjacent to, an area of acute inflammation (without pus or ulceration) should be classified as contaminated. Amputations adjacent to, or through necrotic ulcers and/or purulent areas should be classified as dirty.

Procedure s…