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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Medication checked codes SNOMED CT

Taken from the MEDCHK_COD refset published by NHSD.

Medication review codes SNOMED CT

Taken from the MEDRVW_COD refset published by NHSD.

Medication reviews - all types SNOMED CT

This codelist is designed to be a sensitive codelist to identify a broad range of medication reviews being undertaken.

Published by OpenSAFELY
Men B vaccination contraindicated codes SNOMED CT

Taken from the MENBVACCON_COD refset published by NHSD.

MenACWY GP vaccination codes SNOMED CT

Taken from the MENACWYGP_COD refset published by NHSD.

MenACWY other healthcare provider vaccination codes SNOMED CT

Taken from the MENACWYOHP_COD refset published by NHSD.

Mental and behavioural disorders CTV3
Mental health exception codes SNOMED CT

Taken from the MHEXC_COD refset published by NHSD.

Mercaptopurine BNF
Published by OpenSAFELY
Mercaptopurine dmd dm+d

dm+d codelist for mercaptopurine

Published by OpenSAFELY
Merhotrexate - injectable BNF
Published by OpenSAFELY
Mesalazine BNF
Published by OpenSAFELY
Metabolic disorders CTV3
Metered dose inhalers BNF

Used by the following OpenPrescribing measures:

Published by OpenPrescribing
Methotrexate (oral) dm+d

dm+d codelist for oral methotrexate

Published by OpenSAFELY