2026 ICD-10-CM Diagnosis Code A93.8Other specified arthropod-borne viral fevers

ICD-10-CM Codes›A00–B99›A90-A99›A93

ICD-10-CM A93.8
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A93.8 is a billable ICD-10-CM diagnosis code for other specified arthropod-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
A93.8
Billable Status
Yes — Valid for Submission
Code Describes
Other specified arthropod-borne viral fevers
Short Description
Other specified arthropod-borne viral fevers
Same as the full description in the CMS dataset.
Parent Code
A93
Other arthropod-borne viral fevers, not elsewhere classified

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA90-A99Arthropod-borne viral fevers and viral hemorrhagic fevers
CategoryA93Other arthropod-borne viral fevers, not elsewhere classified
This CodeA93.8Other specified arthropod-borne viral fevers

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Aino virus disease
  • Alkhurma hemorrhagic fever
  • Apeu virus disease
  • Bwamba virus disease
  • Cache Valley virus infection
  • Caraparu virus disease
  • Catu virus disease
  • Chandipura virus disease
  • Disease caused by Nairovirus
  • Disease caused by Orbivirus
  • Disease caused by Vesiculovirus
  • Dugbe virus disease
  • Ganjam virus disease
  • Guama virus disease
  • Guaroa virus disease
  • Inkoo virus disease
  • Itaqui virus disease
  • Kemerovo virus disease
  • Koutango virus disease
  • Lebombo virus disease
  • Madrid virus disease
  • Manzanilla fever
  • Marituba virus disease
  • Mucosal vesicle
  • Murutucu virus disease
  • Nairobi sheep virus disease
  • Nepuyo virus disease
  • Non-neuroinvasive Cache Valley virus disease
  • Oral mucosal viral disease
  • Oriboca virus disease
  • Ossa virus disease
  • Piry virus disease
  • Quaranfil fever
  • Restan virus disease
  • Sandfly-borne rhabdovirus fever
  • Shuni virus disease
  • Southern tick-associated rash illness
  • Tacaiuma virus disease
  • Tataguine virus disease
  • Tribec virus disease
  • Uganda S fever
  • Uukuniemi fever
  • Vesicular stomatitis
  • Vesicular stomatitis Alagoas virus disease
  • Vesicular stomatitis Indiana virus disease
  • Vesicular stomatitis New Jersey virus disease
  • Vesicular stomatitis virus disease
  • Wyeomyia virus disease

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Piry virus disease
  • Vesicular stomatitis virus disease Indiana 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.

    • Disease, diseased
      • arthropod-borne NOS (viral)
        • specified type NEC
    • Disease, diseased
      • Heartland
    • Disease, diseased
      • Nairobi (sheep virus)
    • Disease, diseased
      • Piry virus
    • Disease, diseased
      • viral, virus
        • vesicular stomatitis
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • arbovirus, arboviral
        • specified NEC
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • hemorrhagic (arthropod-borne) NOS
        • mite-borne
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • hemorrhagic (arthropod-borne) NOS
        • tick-borne NEC
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Indiana
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Piry (virus)
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • tick
        • Kemerovo
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • tick
        • Quaranfil
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • tick-bite NEC
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • tick-borne (hemorrhagic) NEC
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • vesicular stomatitis
    • Heartland virus disease
    • Infection, infected, infective(opportunistic)
      • arbovirus (arbor virus)
        • specified type NEC
    • Stomatitis(denture) (ulcerative)
      • vesicular
        • virus disease

Clinical ClassificationClinical

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

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

Clinical InformationClinical

  • Vesicular Stomatitis

    a viral disease caused by at least two distinct species (serotypes) in the vesiculovirus genus: vesicular stomatitis indiana virus and vesicular stomatitis new jersey virus. it is characterized by vesicular eruptions on the oral mucosa in cattle, horses, pigs, and other animals. in humans, vesicular stomatitis causes an acute influenza-like illness.

  • Vesicular stomatitis Indiana virus

    the type species of vesiculovirus causing a disease symptomatically similar to foot-and-mouth disease in cattle, horses, and pigs. it may be transmitted to other species including humans, where it causes influenza-like symptoms.

  • Vesicular stomatitis New Jersey virus

    a species of vesiculovirus causing vesicular stomatitis primarily in cattle, horses, and pigs. it can be transmitted to humans where it causes influenza-like symptoms.

  • Vesiculovirus

    a genus of the family rhabdoviridae that infects a wide range of vertebrates and invertebrates. the type species is vesicular stomatitis indiana virus.

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 A93.8 to ICD-9-CMHistory

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

ICD-9-CM
066.8 Arthropod virus NEC
Exact Match The mapping is direct, with no qualifiers.

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 A93.8Overview

Is A93.8 (Other arthropod-borne viral fevers, not elsewhere classified) a billable code?

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

What MS-DRG does A93.8 group to?

When other specified arthropod-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 A93.8?

Under the General Equivalence Mappings, other specified arthropod-borne viral fevers converts to ICD-9-CM 066.8 (arthropod virus NEC). The mapping is a direct match.

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.