ICD-10-CM 2027
ICD-10 code for Chikungunya fever
From the official ICD-10-CM alphabetic index entry “Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › Chikungunya (viral) (hemorrhagic)”. Page updated September 29, 2026.
About coding Chikungunya fever
The ICD-10-CM code for Chikungunya fever is A92.0 (Chikungunya virus disease).
Within A92 (other mosquito-borne viral fevers), A92.0 is specifically for Chikungunya virus disease. Related codes cover O'nyong-nyong fever (A92.1), Venezuelan equine fever (A92.2), West Nile virus infection (A92.3), Rift Valley fever (A92.4), Zika virus disease (A92.5), other specified mosquito-borne viral fevers (A92.8) and mosquito-borne viral fever, unspecified (A92.9).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 865 (Viral Illness with MCC, relative weight 1.3485) and DRG 866 (Viral Illness without MCC, relative weight 0.8692), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Chikungunya fever ICD-10 codes
What is the ICD-10 code for Chikungunya fever?
- A92.0 — Chikungunya virus disease.
Is A92.0 billable?
- Yes. A92.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A92.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A92.0 as a principal diagnosis.
Is A92.0 a CC or MCC?
- A92.0 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.