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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Breathlessness SNOMED CT
Asthma exacerbations codes derived by Hannah Whittaker (Imperial College London) and reviewed by Jenni Quint (Imperial College London) for CONVALESENCE Long Covid EHR project
Breathlessness SNOMED CT
Published by REDUCEHF
Breathlessness codes SNOMED CT
Taken from the `BREATHLESS_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/).
Brief intervention for excessive alcohol consumption codes SNOMED CT
Taken from the `ALCBRINT_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/).
Brief intervention for excessive alcohol consumption declined codes SNOMED CT
Taken from the `ALCBRINTDEC_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/).
British ethnicities SNOMED CT
A codelist to identify British nationalities.
Published by OpenSAFELY
Bronchial challenge test codes SNOMED CT
Taken from the `BRONCCHALENG_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/).
Bullous impetigo administration codes for Pharmacy First SNOMED CT
Codes that a GP could use to record Bullous Impetigo
These codes are intended to be used to exclude patients with Bullous impetigo, however we believe that the coding isn't specific enough to only exclude those with BI, therefore we will use for sensitivity analysis.
C-peptide test results codes SNOMED CT
Taken from the `CPEPTIDE_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/).
CKD (ICD10) ICD-10
Published by REDUCEHF
CKD stage SNOMED CT
Published by UK Renal Registry
CKD stage 5 (ICD-10) ICD-10
Taken from the CKD stage 5 tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.
Published by NHS Digital
CKD stage 5 (SNOMED CT) SNOMED CT
Taken from the CKD stage 5 tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.
Published by NHS Digital
CKD stage 5 codes SNOMED CT
Taken from the `CKD5_COD` refset published by NHSD.
COPD Read V2
Published by QMUL Multimorbidity