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- poliomyelitis virus (A80.-)
- zoster (B02.1)
- A87.0 Enteroviral meningitis
- Coxsackievirus meningitis
- Echovirus meningitis
- A87.1 Adenoviral meningitis
- A87.2 Lymphocytic choriomeningitis
- Lymphocytic meningoencephalitis
- A87.8 Other viral meningitis
- A87.9 Viral meningitis, unspecified
A88 Other viral infections of central nervous system, not elsewhere classified
- Excludes1: viral encephalitis NOS (A86)
- viral meningitis NOS (A87.9)
- A88.0 Enteroviral exanthematous fever [Boston exanthem]
- A88.1 Epidemic vertigo
- A88.8 Other specified viral infections of central nervous system
A89 Unspecified viral infection of central nervous system
Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99)
A90 Dengue fever [classical dengue]
- Excludes1: dengue hemorrhagic fever (A91)
A91 Dengue hemorrhagic fever
A92 Other mosquito-borne viral fevers
- Excludes1: Ross River disease (B33.1)
- A92.0 Chikungunya virus disease
- Chikungunya (hemorrhagic) fever
- A92.1 O'nyong-nyong fever
- A92.2 Venezuelan equine fever
- Venezuelan equine encephalitis
- Venezuelan equine encephalomyelitis virus disease
- A92.3 West Nile virus infection
- West Nile fever
- A92.30 West Nile virus infection, unspecified
- West Nile fever NOS
- West Nile fever without complications
- West Nile virus NOS
- A92.31 West Nile virus infection with encephalitis
- West Nile encephalitis
- West Nile encephalomyelitis
