Transient ischaemic attack

PH3785 / 8936

OpenSAFELY

Jan 26, 2026

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OpenCodelists Phenotype

  1. Overview

    Codelist ID
    opensafely/transient-ischaemic-attack
    Version ID
    3526e2ac
    Coding System
    Read codes v3
    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.

    Codes that indicate incident or history of transient ischaemic attack. This codelist include definite and probable transient ischaemic attack. Future studies which require codes denoting definite transient ischaemic attack need to derive another codelist.

    © 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

    These codes were mapped first in SNOMED using the opencodelist builder. The search terms used were:

    • transient cerebral ischaemia
    • transient ischaemic attack
    • h/o: tia

    Codes only indicating the assessment scale (CHAD2S2-VASc score itself), high risk of TIA, suspected case and family history of TIA were excluded. 36 codes were identified in SNOMED.

    The codes were discussed by 1 practicing clinicians and 1 epidemiologist. A summary of the discussion is available on the github issue below.

    These codes were mapped to CTV3 which resulted in 24 codes.

  4. References

    Source Reference

    https://www.opencodelists.org/codelist/opensafely/transient-ischaemic-attack/3526e2ac

    References

  5. Clinical Codelist

  6. API

    To Export Phenotype Details:

    FormatAPI
    JSON site_root/api/v1/phenotypes/PH3785/version/8936/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(
     'PH3785',
     version_id=8936
    )

    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(
     'PH3785',
     version_id=8936
    )

    To Export Phenotype Code List:

    FormatAPI
    JSON site_root/api/v1/phenotypes/PH3785/version/8936/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(
     'PH3785',
     version_id=8936
    )

    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(
     'PH3785',
     version_id=8936
    )

  7. Version History

    Version IDNameOwnerPublish date
    Transient ischaemic attack ieuan.scanlon2026-01-26 23:34