ICD-10-CM 2027 diagnosis code
A92.5Zika virus disease
A92.5 is a valid, billable ICD-10-CM code for zika virus disease. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Looking up by condition? See ICD-10 code for Zika NOS.
Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About A92.5
A92.5 is the ICD-10-CM diagnosis code for Zika virus disease. It belongs to category A92 (other mosquito-borne viral fevers), block A90-A99 (arthropod-borne viral fevers and viral hemorrhagic fevers) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within A92 (other mosquito-borne viral fevers), A92.5 is specifically for Zika virus disease. Related codes cover Chikungunya virus disease (A92.0), O'nyong-nyong fever (A92.1), Venezuelan equine fever (A92.2), West Nile virus infection (A92.3), Rift Valley fever (A92.4), other specified mosquito-borne viral fevers (A92.8) and mosquito-borne viral fever, unspecified (A92.9).
Don't report A92.5 together with the conditions in its Excludes1 note: congenital Zika virus disease (P35.4).
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.
It was added in FY2017, effective October 1, 2016.
Before ICD-10, this condition was coded in ICD-9-CM as 066.3 (other mosquito-borne fever).
Coding notes
- Zika virus fever
- Zika virus infection
- Zika NOS
- congenital Zika virus disease (P35.4)
Notes that apply from higher levels
Instructions written at a parent level also apply to A92.5.
› From A92 Other mosquito-borne viral fevers
- Ross River disease (B33.1)
Broader instructions also apply from Chapter 1: Certain infectious and parasitic diseases.
Alphabetic index entries
4 entriesTerms in the official ICD-10-CM index that lead to A92.5.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 18 · Infectious and Parasitic Diseases, Systemic or Unspecified Sites
ICD-9-CM equivalent
Converter →- 066.3Other mosquito-borne feverapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2017 (effective 10/1/2016): Added
- No changes since FY2017.
Common questions about A92.5
Is A92.5 billable?
- Yes. A92.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A92.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A92.5 as a principal diagnosis.
Is A92.5 a CC or MCC?
- A92.5 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does A92.5 group to?
- A92.5 is used in the MS-DRG v44.0 logic for MS-DRG 865 (Viral Illness with MCC) and MS-DRG 866 (Viral Illness without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for A92.5?
- The CMS General Equivalence Mappings map A92.5 to ICD-9-CM 066.3.