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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No longer housebound SNOMED CT
This codelist aims to identify people who are no longer housebound.

To identify people who are housebound at the time of search, it should be used in conjunction with the separate codelist for "housebound".
Published by OpenSAFELY
No longer a carer codes SNOMED CT
Taken from the `NOTCARER_COD` field in SARS-CoV2 COVID19 Vaccination Uptake Reporting Codes 20_21 v1, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021
No longer a carer codes SNOMED CT
Taken from the `NOTCARER_COD` field in SARS-CoV2 COVID19 Vaccination Uptake Reporting Codes 20_21 v1, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021
No longer a carer codes SNOMED CT
Taken from the `NOTACARER_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/).
No permanent address residency codes SNOMED CT
Taken from the `RESNONE_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/).
Non Type 1 or Type 2 diabetes mellitus codes used in National audit SNOMED CT
Taken from the `OTHERDMAUDIT_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/).
Non aspirin antiplatelet drug codes dm+d
Taken from the `NONASPANTIPLTDRUG_COD` NHS drug refset. Contains public sector information licensed under the UK Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/).
Published by NHS Drug Refsets
Non cardio-selective beta-blocker Rx dm+d
Taken from the `NSBB_COD` field in the National PINCER Data Specification, published by PRIMIS.

© PRIMIS - the University of Nottingham 2021
Published by PINCER
Non-HDL cholesterol SNOMED CT
...
Published by Ardens
Non-asthma and non-COPD chronic respiratory disease codes SNOMED CT
Taken from the `C19RESP_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/).
Non-diabetic hyperglycaemia codes SNOMED CT
Taken from the `NDH_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/).
Non-english-speaking SNOMED CT
Codelist for identifying people whose preferred language is not English, based on this codelist: https://www.opencodelists.org/codelist/nhsd-primary-care-domain-refsets/preflang_cod/20250627

Note - both non-English spoken languages and sign language are included in this codelist.
Published by REDUCEHF
Non-haematological cancer diagnosis codes with or without associated treatment SNOMED CT
Taken from the `C19CAN_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/).
Non-haematological cancer morphology codes excluding skin basal cell and squamous cancers SNOMED CT
Taken from the `NHAEMCANMORPH_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/).
Non-haemorrhagic stroke codes SNOMED CT
Taken from the `OSTR_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/).