2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

A92.0 is a billable ICD-10-CM diagnosis code for chikungunya virus disease. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 865 through 866. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 23 closely related codes. 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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to A92.0: its own notes plus those printed at A92 and 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

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Chikungunya (hemorrhagic) fever

Excludes1

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

From A92 Other mosquito-borne viral fevers applies to 11 codes
  • 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.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name A92.0, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming A92.0: they are not reported together with it, unless the two conditions are unrelated.

  • A98 Other viral hemorrhagic fevers, not elsewhere classified
    chikungunya hemorrhagic fever (A92.0)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About A92.0Overview

What is the ICD-10 code for chikungunya virus disease?

The ICD-10-CM code for chikungunya virus disease is A92.0 (sometimes written as A920). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

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 866, 865, with relative weights from 0.8691 to 1.3153 depending on complications. Higher weights mean higher Medicare reimbursement.

Is A92.0 a CC or MCC?

CMS lists A92.0 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 23 closely related codes in its exclusion list.

Can A92.0 be reported with B33.1?

Not as a rule. The Excludes1 note at A92, which applies to A92.0, 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).