Unspecified viral encephalitis
Billable / specific
A86 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Includes
- diseases generally recognized as communicable or transmissible
Applicable to
- Viral encephalomyelitis NOS
- Viral meningoencephalitis NOS
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- 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 code to identify the following, if applicable.
- code to identify resistance to antimicrobial drugs (Z16.-)
Also known as
- Viral encephalomyelitis NOS
- Viral meningoencephalitis NOS
- Encephalitis, acute
- Encephalitis, endemic
- Encephalitis, epidemic NEC
- Encephalitis, infectiousNEC
- Encephalitis, postviral NEC
- Encephalitis, viral, virus
- Meningoencephalitis, acute NEC
- Meningoencephalitis, infectious
- Meningoencephalitis, virus NEC
- Meningoencephalomyelitis, acute NEC
Related codes
- A80Acute poliomyelitisHeader
- A81Atypical virus infections of central nervous systemHeader
- A82RabiesHeader
- A83Mosquito-borne viral encephalitisHeader
- A84Tick-borne viral encephalitisHeader
- A85Other viral encephalitis, not elsewhere classifiedHeader
- A87Viral meningitisHeader
- A88Other viral infections of central nervous system, not elsewhere classifiedHeader
- A89Unspecified viral infection of central nervous systemBillable