Severe asthma drug treatment codes

PH2074 / 4740

NHS Drug Refsets

Jan 26, 2026

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OpenCodelists Phenotype

  1. Overview

    Codelist ID
    nhs-drug-refsets/c19astdrug_cod
    Version ID
    1fa66df9
    Version Tag
    20250627
    Coding System
    dm+d codes
    Collections
    OpenCodelistPhenotype Library
    Tags
    No data

  2. Definition

    This codelist was taken from OpenCodelists, created by OpenSAFELY. We recommend viewing this Phenotype on the OpenCodelist website to view the most recent version.

    Taken from the C19ASTDRUG_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/).

    © University of Oxford for the Bennett Institute for Applied Data Science 2025. This work may be copied freely for non-commercial research and study.

  3. Methodology

    This codelist was imported automatically. The following codes were not found in the Dictionary of Medicines and Devices dictionary and so excluded from this codelist: 320889007, 320884002, 320244004, 320279002, 320280004, 320264009, 320248001, 134499006, 320259005, 320274007, 320277000, 320258002, 134510006, 134498003, 410944008, 320276009, 320250009, 320263003, 320249009, 320275008, 320885001, 320261001.

    This may be because this codelist contains both clinical terms and medications. In which case you may need to create another codelist for the missing clinical/medication codes.

  4. References

    Source Reference

    https://www.opencodelists.org/codelist/nhs-drug-refsets/c19astdrug_cod/20250627

  5. Clinical Codelist

  6. API

    To Export Phenotype Details:

    FormatAPI
    JSON site_root/api/v1/phenotypes/PH2074/version/4740/detail/?format=json
    R Package

    # Download here

    library(ConceptLibraryClient)


    # Connect to API

    client = ConceptLibraryClient::Connection$new(public=TRUE)


    # Get details of Phenotype

    phenotype_details = client$phenotypes$get_detail(
     'PH2074',
     version_id=4740
    )

    Py Package

    # Download here

    from pyconceptlibraryclient import Client


    # Connect to API

    client = Client(public=True)


    # Get details of Phenotype

    phenotype_detail = client.phenotypes.get_detail(
     'PH2074',
     version_id=4740
    )

    To Export Phenotype Code List:

    FormatAPI
    JSON site_root/api/v1/phenotypes/PH2074/version/4740/export/codes/?format=json
    R Package

    # Download here

    library(ConceptLibraryClient)


    # Connect to API

    client = ConceptLibraryClient::Connection$new(public=TRUE)


    # Get codelist of Phenotype

    phenotype_codelist = client$phenotypes$get_codelist(
     'PH2074',
     version_id=4740
    )

    Py Package

    # Download here

    from pyconceptlibraryclient import Client


    # Connect to API

    client = Client(public=True)


    # Get codelist of Phenotype

    phenotype_codelist = client.phenotypes.get_codelist(
     'PH2074',
     version_id=4740
    )

  7. Version History

    Version IDNameOwnerPublish date
    4741 Severe asthma drug treatment codes ieuan.scanlon2026-01-26 21:45
    Severe asthma drug treatment codes ieuan.scanlon2026-01-26 21:45