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    OpenPayerBilling CodesArthropod-borne viral fevers and viral hemorrhagic feversICD-10-CM a92-other-mosquito-borne-viral-fevers
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    ICD-10-CM Code For Other Mosquito Borne Viral Fevers: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group A92 includes viral fevers transmitted by mosquitoes that are not otherwise specified elsewhere in the classification, such as certain arboviral infections presenting with systemic febrile illness. These ICD-10-CM diagnosis codes are used to document clinical encounters for acute mosquito-borne viral infections, capturing features such as febrile presentation, rash, neurologic signs, or hemorrhagic manifestations when present. Accurate coding within the ICD-10-CM A92 group supports proper claim adjudication by linking documented clinical findings to the correct diagnostic classification and facilitating complete clinical documentation and appropriate reimbursement.

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    ICD-10-CM A92: Other Mosquito-Borne Viral Fevers Overview

    The ICD-10-CM A92 group represents viral infections transmitted by mosquito vectors that are not classified elsewhere, affecting systemic and sometimes neurologic or hemorrhagic systems. These conditions target infectious disease processes following mosquito exposure and can involve fever, myalgias, rash, and variable organ involvement. Accurate coding matters for reimbursement because it links clinical documentation to appropriate diagnosis groupings that influence claim adjudication and resource utilization.

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    When to Use

    Use a code from this group when a clinician documents an acute mosquito-transmitted viral infection that does not fit into a more specific arboviral diagnosis elsewhere in the classification. These codes apply when clinical findings such as fever, rash, neurologic symptoms, or hemorrhagic signs are attributed to a mosquito-borne viral etiology and no more precise code is documented.

    ICD-10-CM Codes

    11 rows

    ICD-10-CM CodeDescription
    A92.0Chikungunya virus disease
    A92.1O'nyong-nyong fever
    A92.2Venezuelan equine fever
    A92.30West Nile virus infection, unspecified
    A92.31West Nile virus infection with encephalitis
    A92.32West Nile virus infection with other neurologic manifestation
    A92.39West Nile virus infection with other complications
    A92.4Rift Valley fever
    A92.5Zika virus disease
    A92.8Other specified mosquito-borne viral fevers
    A92.9Mosquito-borne viral fever, unspecified

    DRG Codes

    7 rows

    DRG CodeDescription
    023Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator
    024Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC
    097Non-Bacterial Infection of Nervous System Except Viral Meningitis with MCC
    098Non-Bacterial Infection of Nervous System Except Viral Meningitis with CC
    099Non-Bacterial Infection of Nervous System Except Viral Meningitis without CC/MCC
    865Viral Illness with MCC
    866Viral Illness without MCC

    Typical Clinical Scenarios

    • An adult presents to the emergency department with high fever, severe myalgias, headache, conjunctival injection, and a maculopapular rash three days after returning from travel to a tropical region with known mosquito-borne virus activity. The clinician documents an acute systemic febrile viral illness suspected to be due to a mosquito-transmitted arbovirus and orders serologic and PCR testing; a provisional diagnosis from this group is assigned pending confirmatory results. Typical codes: A92.0, A92.5
    • A pediatric patient is seen in outpatient infectious disease clinic with persistent arthralgias, intermittent low-grade fever, and post-viral fatigue for several weeks following a documented mosquito-borne viral infection. The visit documents ongoing sequelae and management of subacute symptoms related to the prior arboviral illness, and a code from this group is used to capture the ongoing mosquito-borne viral etiology. Typical codes: A92.1, A92.9
    • An older patient hospitalized for acute febrile illness develops hemorrhagic manifestations including gum bleeding and thrombocytopenia after several days of high fever; the team diagnoses a hemorrhagic complication attributable to a mosquito-transmitted viral infection. The diagnosis is recorded to reflect the hemorrhagic form of a mosquito-borne arboviral fever as the cause of the bleeding and coagulopathy. Typical codes: A92.32, A92.39

    Related Codes

    A90-DENGUE-FEVER-CLASSICAL-DENGUE

    ICD-10-CM Code For Dengue Fever Classical Dengue: Group Overview

    A91-DENGUE-HEMORRHAGIC-FEVER

    ICD-10-CM Code For Dengue Hemorrhagic Fever: Group Overview

    A93-OTHER-ARTHROPOD-BORNE-VIRAL-FEVERS

    ICD-10-CM Code For Other Arthropod Borne Viral Fevers Not Elsewhere Classified: Group Overview

    A94-UNSPECIFIED-ARTHROPOD-BORNE-VIRAL-FEVER

    ICD-10-CM Code For Unspecified Arthropod-Borne Viral Fever: Group Overview

    A95-YELLOW-FEVER

    ICD-10-CM Code For Yellow Fever: Group Overview

    A96-ARENAVIRAL-HEMORRHAGIC-FEVER

    ICD-10-CM Code for Arenaviral Hemorrhagic Fever: Group Overview

    A98-OTHER-VIRAL-HEMORRHAGIC-FEVERS

    ICD-10-CM Code For Other Viral Hemorrhagic Fevers Not Elsewhere Classified: Group Overview

    A99-UNSPECIFIED-VIRAL-HEMORRHAGIC-FEVER

    ICD-10-CM Code For Unspecified Viral Hemorrhagic Fever: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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