A92

Non-Billable
ChapterA00–B99
Rankcategory
Official Description

Other mosquito-borne viral fevers

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

CH1 Parent Instructions

Includes
  • diseases generally recognized as communicable or transmissible
Excludes1(Not coded here)
  • certain localized infections - see body system-related chapters
Excludes2(Not included here)
  • carrier or suspected carrier of infectious disease (Z22.-)
  • 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
  • code to identify resistance to antimicrobial drugs (Z16.-)

Instructional Notes

Excludes1(Not coded here)
  • Ross River disease (B33.1)

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)
A90-A99Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99)
A92Other mosquito-borne viral fevers
A92.0Chikungunya virus disease
A92.1O'nyong-nyong fever
A92.2Venezuelan equine fever
A92.3West Nile virus infection
A92.4Rift Valley fever
A92.5Zika virus disease
A92.8Other specified mosquito-borne viral fevers
A92.9Mosquito-borne viral fever, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A92:

chapterCH1
Certain infectious and parasitic diseases (A00-B99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to A92. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)1 unique routes
in (due to)
O'nyong-nyong→A92
Bwamba fever1 unique routes
Direct index entry→A92
Disease, diseased1 unique routes
Zika virus→A92
Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)2 unique routes
equine (acute) (infectious) (viral)
Venezuelan→A92
Venezuelan equine→A92
Encephalomyelitis2 unique routes
equine
Venezuelan→A92
Venezuelan equine→A92
Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)18 unique routes
Barmah forest→A92
Bunyamwera→A92
Bwamba→A92
Chandipura→A92
Chikungunya (viral) (hemorrhagic)→A92
Guama (viral)→A92
Mayaro (viral)→A92
Mucambo (viral)→A92
O'nyong-nyong (viral)→A92
Pixuna (viral)→A92
Rift Valley (viral)→A92
Venezuelan equine→A92
Wesselsbron (viral)→A92
West(5 variants)
Nile (viral)→A92(5 variants)
with(4 variants)
complications NEC→A92
cranial nerve disorders→A92
encephalitis→A92
encephalomyelitis→A92

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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