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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to represent household contact of shielding individual SNOMED CT
Taken from the `HHLD_IMDEF_COD` field in SARS-CoV2 COVID19 Vaccination Uptake Reporting Codes 20_21 v1, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021
type of residence SNOMED CT
Taken from the `RESIDE_COD` fields in SARS-CoV2 (COVID-19) Vaccine Uptake Reporting Codes v.1.5.3
ulcer_peptic Read V2
Published by QMUL Multimorbidity
unspecified mood disorders ICD-10
urinary tract infection SNOMED CT
Urinary tract infection (UTI) codes, focusing on UTI events which may be treated with antibiotics
Published by UKHSA
venous thromboembolism ICD-10 ICD-10
Codes to define venous thromboembolism in ONS death data.
Published by OpenSAFELY
venous-thromboembolic-disease-hospital ICD-10
Codes to define venous thromboembolic disease in hospital.
Published by OpenSAFELY
weight_kgs SNOMED CT
SNOMED codelist for the `weight_kgs` group in the QCovid® to develop the
COVID-19 Population Risk Assessment.
Published by QCovid