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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Ca126 SNOMED CT
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Published by Ardens
Ca127 SNOMED CT
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Published by Ardens
Calcium Channel Blockers dm+d
The codelist contains medicines that are classed as [calcium channel blockers in BNF codes](https://openprescribing.net/bnf/020602/).
Published by OpenSAFELY
Calcium level SNOMED CT
...
Published by Ardens
Calcium test result codes SNOMED CT
Taken from the `CALC_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/).
Cancer excluding lung and haematological CTV3
Codes indicating a diagnosis of a cancer other than lung cancer or haematological cancer
Published by OpenSAFELY
Cancer excluding lung and haematological (SNOMED) SNOMED CT
Automatically-generated equivalent of [Cancer excluding lung and haematological](/codelist/opensafely/cancer-excluding-lung-and-haematological/)
Published by OpenSAFELY
Cancer safety netting codes SNOMED CT
Taken from the `CANSAFNET_COD` refset published by NHSD.
Cardio vascular disease (CVD) exception from quality indicator codes SNOMED CT
Taken from the `CVDEXC_COD` refset published by NHSD.
Cardiovascular Secondary Care ICD-10
Chapter I of ICD-10 for cardiovascular mortality with variables separating out codes relating to myocardial infarction and heart failure. Previously used by Jeremy P. Brown and Krishnan Bhaskaran (see below).
Published by OpenSAFELY
Cardiovascular disease (CVD) risk assessment adjusted for rheumatoid arthritis (RA) exception codes SNOMED CT
Taken from the `CVDASSRAEXC_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/).
Cardiovascular disease (CVD) risk assessment codes SNOMED CT
Taken from the `CVDASS2_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/).
Cardiovascular disease (CVD) risk assessment codes greater than 20 per cent SNOMED CT
Taken from the `CVDASS1_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/).
Cardiovascular disease (CVD) risk assessment done codes SNOMED CT
Taken from the `CVDRISKASS_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/).
Cardiovascular disease (CVD) risk assessment done codes (obsolete) SNOMED CT
Taken from the `CVDRISKASS_COD` refset published by NHSD.