2020 ICD-10-CM Diagnosis Code A93.2

Colorado tick fever

    2016 2017 2018 2019 2020 Billable/Specific Code
  • A93.2 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM A93.2 became effective on October 1, 2019.
  • 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
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to A93.2:
  • A00-B99
    2020 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • carrier or suspected carrier of infectious disease (Z22.-)
    • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
    • infectious and parasitic diseases specific to the perinatal period (P35-P39)
    • influenza and other acute respiratory infections (J00-J22)
    Use Additional
    • code to identify resistance to antimicrobial drugs (Z16.-)
    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 v37.0):
  • 865 Viral illness with mcc
  • 866 Viral illness without mcc

Convert A93.2 to ICD-9-CM

Code 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

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
    ICD-10-CM Diagnosis Code R50.9

    Fever, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Fever NOS
    • Fever of unknown origin [FUO]
    • Fever with chills
    • Fever with rigors
    • Hyperpyrexia NOS
    • Persistent fever
    • Pyrexia NOS
    • 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

ICD-10-CM Codes Adjacent To A93.2
A92.31 …… with encephalitis
A92.32 …… with other neurologic manifestation
A92.39 …… with other complications
A92.4 Rift Valley fever
A92.5 Zika virus disease
A92.8 Other specified mosquito-borne viral fevers
A92.9 Mosquito-borne viral fever, unspecified
A93 Other arthropod-borne viral fevers, not elsewhere classified
A93.0 Oropouche virus disease
A93.1 Sandfly fever
A93.2 Colorado tick fever
A93.8 Other specified arthropod-borne viral fevers
A94 Unspecified arthropod-borne viral fever
A95 Yellow fever
A95.0 Sylvatic yellow fever
A95.1 Urban yellow fever
A95.9 Yellow fever, unspecified
A96 Arenaviral hemorrhagic fever
A96.0 Junin hemorrhagic fever
A96.1 Machupo hemorrhagic fever
A96.2 Lassa fever

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.