2027 ICD-10-CM Diagnosis Code A92Other mosquito-borne viral fevers

ICD-10-CM Codes›A00–B99›A90-A99›A92

ICD-10-CM A92
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

A92 is a non-billable ICD-10-CM category code for other mosquito-borne viral fevers, so it cannot be submitted on claims. Use a more specific code from this category instead, such as A92.0, A92.1, A92.2, and A92.30.

Code Identity

ICD-10-CM Code
A92
Billable Status
No — Non-Billable Category
Code Describes
Other mosquito-borne viral fevers
Short Description
Other mosquito-borne viral fevers
Same as the full description in the CMS dataset.
Chapter
A90-A99
Arthropod-borne viral fevers and viral hemorrhagic fevers

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA90-A99Arthropod-borne viral fevers and viral hemorrhagic fevers
CategoryA92Other mosquito-borne viral fevers
This CodeA92Other mosquito-borne viral fevers

Specific Coding for Other mosquito-borne viral feversOverview

Non-specific codes like A92 require more characters. Use one of these billable codes instead:

  • Use A92.0 for Chikungunya virus disease

  • Use A92.1 for O'nyong-nyong fever

  • Use A92.2 for Venezuelan equine fever

  • A92.3 for West Nile virus infection

  • Use A92.30 for West Nile virus infection, unspecified

  • Use A92.31 for West Nile virus infection with encephalitis

  • Use A92.32 for West Nile virus infection with other neurologic manifestation

  • Use A92.39 for West Nile virus infection with other complications

  • Use A92.4 for Rift Valley fever

  • Use A92.5 for Zika virus disease

  • Use A92.8 for Other specified mosquito-borne viral fevers

  • Use A92.9 for Mosquito-borne viral fever, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to A92: its own notes plus those printed at Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • Ross River disease (B33.1)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • 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

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

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.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About A92Overview

What is the ICD-10 code for other mosquito-borne viral fevers?

A92 is the ICD-10-CM category for other mosquito-borne viral fevers, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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

No. This is a category header that groups the codes for other mosquito-borne viral fevers, and headers cannot be submitted on claims. Claims for other mosquito-borne viral fevers need a more specific code from this category, such as A92.0, A92.1, and A92.2.

Can A92 be reported with B33.1?

Not as a rule. The Excludes1 note on A92 lists "Ross River disease (B33.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).