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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Height measured codes (obsolete) SNOMED CT
Taken from the `NDAHEIGHT_COD` refset published by NHSD.
Hepatitis B blood test codes SNOMED CT
Taken from the `HEPBBLD_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/).
Hepatitis C CTV3
A codelist developed to support identification of people with hepatitis C, current or past.

Includes a history of flag:
- 0 for not a history code;
Published by OpenSAFELY
Hepatitis C associated with glomerulonephritis codes SNOMED CT
Taken from the `HEPCGN_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/).
Hereditary spherocytosis diagnosis codes SNOMED CT
Taken from the `SPHEROCYTOSIS_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/).
HibMenC vaccination contraindication codes SNOMED CT
Taken from the `HIBMENCVACCON_COD` refset published by NHSD.
Hidradenitis Suppurativa CTV3
The following list contains codes for Hidradenitis Suppurativa.
Published by OpenSAFELY
High International normalised ratio (INR) CTV3
This codelist is used to identify INR blood tests that are explicitly considered to be high.
Published by OpenSAFELY
High Risk from COVID-19 code SNOMED CT
Taken from the `SHIELD_COD` field in SARS-CoV2 COVID19 Vaccination Uptake Reporting Codes 20_21 v1, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021
High Risk from COVID-19 code SNOMED CT
Taken from the `SHIELD_COD` field in SARS-CoV2 COVID19 Vaccination Uptake Reporting Codes 20_21 v1, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021
High cost drugs - Abatacept null
This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of abatacept.
Published by OpenSAFELY
High cost drugs - Adalimumab null
This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of Adalimumab.
Published by OpenSAFELY
High cost drugs - Aflibercept null
This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of aflibercept.
Published by OpenSAFELY
High cost drugs - Alemtuzumab null
This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of alemtuzumab.
Published by OpenSAFELY
High cost drugs - Anakinra null
This is a list of all the unique values from the Drug Name variable in the High Cost Drugs Dataset that relate to the prescribing of anakinra.
Published by OpenSAFELY