2026 ICD-10-CM Diagnosis Code A92.5Zika virus disease

ICD-10-CM Codes›A00–B99›A90-A99›A92

ICD-10-CM A92.5
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

A92.5 is a billable ICD-10-CM diagnosis code for Zika 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Viral infection.

Code Identity

ICD-10-CM Code
A92.5
Billable Status
Yes — Valid for Submission
Code Describes
Zika virus disease
Short Description
Zika 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 CodeA92.5Zika virus disease

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Zika virus disease
  • Zika virus infection during pregnancy

Tabular List NotesGuidance

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

Inclusion Terms

  • Zika virus fever
  • Zika virus infection
  • Zika NOS

Type 1 Excludes

  • congenital Zika virus disease P35.4

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
      • Zika virus
    • Fever(inanition) (of unknown origin) (persistent) (with chills) (with rigor)
      • Zika virus
    • Infection, infected, infective(opportunistic)
      • Zika virus
    • Zika NOS

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

Zika Virus

Zika is a virus that is spread mostly by mosquitoes. A pregnant mother can pass it to her baby during pregnancy or around the time of birth. It can spread through sexual contact. There have also been reports that the virus has spread through blood transfusions.

Read the full article at MedlinePlus

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

Convert A92.5 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 History & ChangesHistory

Replacement A92.5 replaces the following previously assigned code(s):

  • A92.8 - Other specified mosquito-borne viral fevers
FY 2018AddedAdded to the ICD-10-CM code setEffective October 1, 2017.
FY 2019–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About A92.5Overview

Is A92.5 (Other mosquito-borne viral fevers) a billable code?

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

What MS-DRG does A92.5 group to?

When Zika 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 A92.5?

Under the General Equivalence Mappings, Zika virus disease 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.