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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Cerebrospinal fluid leak codes SNOMED CT
Taken from the `CSFLATRISK1_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/).
Cerebrospinal fluid shunt codes SNOMED CT
Taken from the `CSFSATRISK1_COD` refset published by NHSD.
Cerebrospinal fluid shunt removal codes SNOMED CT
Taken from the `CSFSREMATRISK1_COD` refset published by NHSD.
Cerebrovascular Disease SNOMED CT
This codelist aims to identify patients who have cerebrovascular disease (primarily affecting the cerebral or retinal circulation) where an atherosclerotic pathology exists.
Published by OpenSAFELY
Cervical cytology exception codes SNOMED CT
Taken from the `CYTEXC_COD` refset published by NHSD.
Cervical screening codes SNOMED CT
Taken from the `SMEAR_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/).
Change of medication codes SNOMED CT
Taken from the `CHNGMED_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/).
Chemotherapy non-drug concept codes SNOMED CT
Taken from the `CHEMO_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/).
Chemotherapy or Radiotherapy CTV3
Codes indicating chemotherapy or radiotherapy or both has been carried out
Published by OpenSAFELY
Chemotherapy or Radiotherapy (SNOMED) SNOMED CT
Automatically-generated equivalent of [Chemotherapy or Radiotherapy](/codelist/opensafely/chemotherapy-or-radiotherapy/)
Published by OpenSAFELY
Chemotherapy or Radiotherapy (updated) CTV3
An updated version of https://codelists.opensafely.org/codelist/opensafely/chemotherapy-or-radiotherapy/, with truncated codes fixed.
Published by OpenSAFELY
Chemotherapy systemic medication codes dm+d
Taken from the `CHEMODRUG_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
Chest discomfort codes SNOMED CT
Taken from the `CHESTDISCOMF_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/).
Chimeric antigen receptor (CAR)-T cell systemic medication codes dm+d
Taken from the `CARTDRUG_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
Chloroquine dm+d
This notebook contains [NHS dm+d codes](https://ebmdatalab.net/what-is-the-dmd-the-nhs-dictionary-of-medicines-and-devices/) medications chloroquine phosphate or chloroquine sulfate.
Published by OpenSAFELY