2026 ICD-10-CM Diagnosis Code A92.8Other specified mosquito-borne viral fevers

ICD-10-CM Codes›A00–B99›A90-A99›A92

ICD-10-CM A92.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A92.8 is a billable ICD-10-CM diagnosis code for other specified mosquito-borne viral fevers. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 865 through 866. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Viral infection.

Code Identity

ICD-10-CM Code
A92.8
Billable Status
Yes — Valid for Submission
Code Describes
Other specified mosquito-borne viral fevers
Short Description
Other specified mosquito-borne viral fevers
Same as the full description in the CMS dataset.
Parent Code
A92
Other mosquito-borne viral fevers

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA90-A99Arthropod-borne viral fevers and viral hemorrhagic fevers
CategoryA92Other mosquito-borne viral fevers
This CodeA92.8Other specified mosquito-borne viral fevers

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Barmah Forest disease
  • Batai fever
  • Bebaru fever
  • Bunyamwera virus disease
  • Cache Valley virus infection
  • Calchaqui fever
  • Calovo virus disease
  • Disease caused by Alphavirus
  • Disease caused by Vesiculovirus
  • Germistan virus disease
  • Ilesha virus disease
  • Maguari fever
  • Mayaro fever
  • Mucambo fever
  • Pixuna fever
  • Semliki forest fever
  • Sindbis fever
  • Tensaw virus disease
  • Trivittatus fever
  • Wesselsbron fever

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Bwamba fever
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Barmah forest
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Bunyamwera
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Bwamba
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Chandipura
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Guama (viral)
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • hemorrhagic (arthropod-borne) NOS
        • mosquito-borne
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Mayaro (viral)
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • mosquito-borne (viral)
        • hemorrhagic
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Mucambo (viral)
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Pixuna (viral)
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Wesselsbron (viral)

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INF008
Viral infection
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Viral Infections

Viruses are very tiny germs. They are made of genetic material (either DNA or RNA) inside of a protein coating. There are a huge number of viruses on earth. Only a small number of them can infect humans. Those viruses can infect our cells, which may cause disease.

The full article covers:

  • What are viruses?
  • How are viruses spread?
  • How do viruses cause disease?
  • What are the treatments for viral infections?
  • Can viral infections be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert A92.8 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
066.3 Mosquito-borne fever NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About A92.8Overview

Is A92.8 (Other mosquito-borne viral fevers) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified mosquito-borne viral fevers on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does A92.8 group to?

When other specified mosquito-borne viral fevers is the principal diagnosis on an inpatient stay, it groups to MS-DRG 865, 866, with relative weights from 0.8696 to 1.4983 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of A92.8?

Under the General Equivalence Mappings, other specified mosquito-borne viral fevers converts to ICD-9-CM 066.3 (mosquito-borne fever NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.