2024 ICD-10-CM Diagnosis Code A93.2

Colorado tick fever

  • A93.2 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 A93.2 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A93.2 – other international versions of ICD-10 A93.2 may differ.

The following code(s) above A93.2 contain annotation back-references

 that may be applicable to A93.2:

  • A00-B99  Certain infectious and parasitic diseases

Clinical Information

  • A febrile illness characterized by chills, aches, vomiting, leukopenia, and sometimes encephalitis. It is caused by the colorado tick fever virus, a reovirus transmitted by the tick dermacentor andersoni.

ICD-10-CM A93.2 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

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

Convert A93.2 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

Diagnosis Index entries containing back-references to A93.2:

  • American
    • mountain tick fever A93.2
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
    • American
      • mountain A93.2 (tick)
    • mountain – see also Brucellosis
      • tick A93.2 (American) (Colorado) (viral)
    • tick
      • American mountain A93.2
      • Colorado A93.2
      • mountain A93.2
      • nonexanthematous A93.2
    • Colorado tick A93.2 (virus)
    • non-exanthematous tick A93.2
  • Mountain
    • tick fever A93.2
  • Nonexanthematous tick fever A93.2