2024 ICD-10-CM Diagnosis Code A91

Dengue hemorrhagic fever

  • A91 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM A91 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A91 – other international versions of ICD-10 A91 may differ.

The following code(s) above A91 contain annotation back-references

 that may be applicable to A91:

  • A00-B99  Certain infectious and parasitic diseases

Clinical Information

  • A serious condition caused by dengue virus infection. Patients present with an acute febrile illness followed by restlessness, irritability, and bleeding. It may lead to hemorrhagic shock and death.
  • A virulent form of dengue characterized by thrombocytopenia and an increase in vascular permeability (grades i and ii) and distinguished by a positive pain test (e.g., tourniquet pain test). When accompanied by shock (grades iii and iv), it is called dengue shock syndrome.

ICD-10-CM A91 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 865 Viral illness with mcc
  • 866 Viral illness without mcc

Convert A91 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Code annotations containing back-references to A91:

Diagnosis Index entries containing back-references to A91:

  • Bangkok hemorrhagic fever A91
  • Dengue (classical) (fever) A90
    • hemorrhagic A91
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
    • dengue (virus) A90
      • hemorrhagic A91
    • hemorrhagic (arthropod-borne) A94
      • Bangkok A91
      • dengue A91 (virus)
      • Philippine A91
      • Singapore A91
      • Southeast Asia A91
      • Thailand A91
    • Bangkok hemorrhagic A91
    • Philippine hemorrhagic A91
    • Singapore hemorrhagic A91
    • Southeast Asia hemorrhagic A91
    • Thailand hemorrhagic A91
  • Singapore hemorrhagic fever A91
  • Southeast Asian hemorrhagic fever A91
  • Thailand hemorrhagic fever A91

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