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 Identification (Prescriptions) - Maximal Sensitivity BNF

Codelist created to identify Covid-19 in primary care without testing, medications provided by NHS England

Published by OpenSAFELY
COVID-19 Identification (Primary Care) SNOMED CT

Codelist created to identify COVID-19 in primary care with as much specificity as possible

Published by OpenSAFELY
COVID-19 Identification (Primary Care) - Maximal Sensitivity SNOMED CT

Codelist created to identify COVID-19 in primary care with as much sensitivity as possible

Published by OpenSAFELY
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 activity codes SNOMED CT

Taken from the C19ACTIVITY_COD refset published by NHSD.

COVID19 risk category codes SNOMED CT

Taken from the C19RISK_COD refset published by NHSD.

COVID19 testing, diagnoses and related activity SNOMED CT

Taken from the GDPPRC19ACTIVITY_COD refset published by NHSD.

COVID19 testing, diagnoses and related activity codes SNOMED CT

Taken from the GDPPRC19ACTIVITY_COD refset published by NHSD.