2026 ICD-10-CM Diagnosis Code A92.0Chikungunya virus disease

ICD-10-CM Codes›A00–B99›A90-A99›A92

ICD-10-CM A92.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A92.0 is a billable ICD-10-CM diagnosis code for chikungunya virus disease. 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. Coders also document this condition as chikungunya fever. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Viral infection.

Code Identity

ICD-10-CM Code
A92.0
Billable Status
Yes — Valid for Submission
Code Describes
Chikungunya virus disease
Short Description
Chikungunya virus disease
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 CodeA92.0Chikungunya virus disease

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chikungunya fever

Tabular List NotesGuidance

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

Inclusion Terms

  • Chikungunya (hemorrhagic) 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.

    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Chikungunya (viral) (hemorrhagic)
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • hemorrhagic (arthropod-borne) NOS
        • Chikungunya

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

  • Chikungunya Fever

    an acute infection caused by a mosquito-borne alphavirus chikungunya virus characterized by rash; fever; joint pains; conjunctivitis; meningoencephalitis; lymphopenia; and thrombocytopenia.

Patient EducationClinical

Chikungunya

Chikungunya is a virus that spread by the same kinds of mosquitoes that spread dengue and Zika virus. Rarely, the virus can spread from the pregnant parent to their newborn around the time of birth. It may also spread through contact with infected blood.

Read the full article at MedlinePlus

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

Convert A92.0 to ICD-9-CMHistory

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

ICD-9-CM
065.4 Mosquito-borne hem fever
Approximate The match is approximate rather than exact.
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 A92.0Overview

Is A92.0 (Other mosquito-borne viral fevers) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report chikungunya virus disease on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does A92.0 group to?

When chikungunya virus disease 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 A92.0?

Under the General Equivalence Mappings, chikungunya virus disease converts to ICD-9-CM 065.4 (mosquito-borne hem fever) and 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.