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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COVID-19 Vaccination - Contraindication or Allergy SNOMED CT
Codes that explicitly indicate COVID-19 allergy, or that the vaccine is contraindicated or not indicated. Includes inactive codes.
Published by OpenSAFELY
COVID-19 Vaccination - Did not attend first appointment SNOMED CT
Codes to identify where someone did not attend an appointment also known as DNAs
Published by OpenSAFELY
COVID-19 Vaccination - Did not attend second appointment SNOMED CT
Codes to identify where someone did not attend a second COVID-19 vaccination appointment also known as DNAs
Published by OpenSAFELY
COVID-19 Vaccination - First dose not given SNOMED CT
Published by OpenSAFELY
COVID-19 Vaccination - Second dose not given SNOMED CT
Published by OpenSAFELY
COVID-19 Vaccination Given SNOMED CT
Published by OpenSAFELY
COVID-19 Vaccination Unavailable SNOMED CT
A single code to denote when a vaccine is unavailable.
Published by OpenSAFELY
COVID-19 vaccination medication code (any) dm+d
Taken from the `COVRX1/2_COD` fields in SARS-CoV2 COVID19 Vaccination Uptake Reporting Codes 20_21, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021
COVID19 risk category codes SNOMED CT
Taken from the `C19RISK_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/).
COVID19 testing diagnoses and related activity codes SNOMED CT
Taken from the `GDPPRC19ACTIVITY_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/).
COVID19 testing, diagnoses and related activity codes (obsolete) SNOMED CT
Taken from the `GDPPRC19ACTIVITY_COD` refset published by NHSD.
COX-2 Specific NSAIDs dm+d
This is a list of [NHS dictionary of medicines and devices](https://ebmdatalab.net/what-is-the-dmd-the-nhs-dictionary-of-medicines-and-devices/) oral non-seroidal anti-inflammatory drugs (NSAIDs) that specifically targets cyclooxygenase / COX-2 enzyme.
Published by OpenSAFELY
CRP level SNOMED CT
...
Published by Ardens
CVD risk assessment score QOF SNOMED CT
Patients who have received a cardiovascular risk score as listed in the QoF business rules
Published by OpenSAFELY
Ca125 SNOMED CT
...
Published by Ardens