Acute transverse myelitis ICD-10

PH3261 / 8249

OpenSAFELY

Jan 26, 2026

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OpenCodelists Phenotype

  1. Overview

    Codelist ID
    opensafely/acute-transverse-myelitis-icd-10
    Version ID
    323243cb
    Coding System
    ICD10 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.

    Acute transverse myelitis ICD-10 codelist for use with hospital and mortality data

    Codelist aims to be specific rather than sensitive, and to describe acute transverse myelitis occuring on its own rather than myelitis as part of a broader disease process such as encephalomyelitis or ADEM. Does not include codes which are not specific to acute transverse myelitis, e.g. such as 'Encephalitis, myelitis and encephalomyelitis'.

    © 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

    Search and strategy documented on Github here https://github.com/opensafely/codelist-development/issues/135

    Note The Brighton collaboration definition of acute myelitis additionally includes G37.9 described as 'Myelitis, transverse' in the Brighton template, but not included here as it is defined as 'Demyelinating disease of central nervous system, unspecified' in the WHO ICD-10 browser (2019)

  4. References

    Source Reference

    https://www.opencodelists.org/codelist/opensafely/acute-transverse-myelitis-icd-10/323243cb

    References

  5. Clinical Codelist

  6. API

    To Export Phenotype Details:

    FormatAPI
    JSON site_root/api/v1/phenotypes/PH3261/version/8249/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(
     'PH3261',
     version_id=8249
    )

    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(
     'PH3261',
     version_id=8249
    )

    To Export Phenotype Code List:

    FormatAPI
    JSON site_root/api/v1/phenotypes/PH3261/version/8249/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(
     'PH3261',
     version_id=8249
    )

    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(
     'PH3261',
     version_id=8249
    )

  7. Version History

    Version IDNameOwnerPublish date
    Acute transverse myelitis ICD-10 ieuan.scanlon2026-01-26 23:08