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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Immunosuppression resolved codes SNOMED CT

Taken from the IMRESATRISK1_COD refset published by NHSD.

Immunosupression (PCDCluster) (SNOMED CT) SNOMED CT

Taken from the Immunosupression (PCDCluster) tab of the Population Risk COVID-19 Treatments code list v1.3, published by NHS Digital, 2021-12-13.

Published by NHS Digital
Impaired glucose tolerance codes SNOMED CT

Taken from the IGT_COD refset published by NHSD.

Incident Stroke CTV3

Codes relating to incident stroke in primary care.

Published by OpenSAFELY
Incident heart failure CTV3

Incident heart failure codes

Published by OpenSAFELY
Incident non-traumatic stroke CTV3

Further adapted from https://codelists.opensafely.org/codelist/opensafely/incident-stroke/2020-10-05/, to remove codes associated with trauma, or perinatal events (thanks to Brian Nicholson for reviewing this!).

The list was previously from https://codelists.opensafely.org/codelist/opensafely/stroke-updated/2020-06-02/.

Published by OpenSAFELY
Inclisiran contraindicated codes SNOMED CT

Taken from the INCLISIRANCON_COD refset published by NHSD.

Inclisiran not indicated codes SNOMED CT

Taken from the INCLISIRANNIND_COD refset published by NHSD.

Indometacin dm+d

This is a list of NHS dictionary of medicines and devices codes for oral indometacin.

Published by OpenSAFELY
Inflammatory Bowel Disease CTV3

Codes indicating diagnosis of inflammatory bowel disease

Published by OpenSAFELY
Inflammatory Bowel Disease (SNOMED) SNOMED CT

Automatically-generated equivalent of Inflammatory Bowel Disease

Published by OpenSAFELY
Inflammatory Bowel Disease - Unclassified CTV3
Published by OpenSAFELY
Influenza Exclusion (Primary Care) - Maximal Sensitivity SNOMED CT

Exclusion critera for identifying Influenza in primary care when using a maximally sensitive codelist

Published by OpenSAFELY
Influenza Exclusion (Secondary Care) - Maximal Sensitivity ICD-10

Exclusion criteria for identifying Influenza in primary care when using a maximally sensitive codelist

Published by OpenSAFELY
Influenza Identification (Prescriptions) - Maximal Sensitivity BNF

Codelist created to identify influenza infections in primary care without testing, medications were provided by clinician Charlotte Warren-Gash

Published by OpenSAFELY