Unspecified viral encephalitis (A86)
The ICD-10 code A86 is used to classify cases of unspecified viral encephalitis, a brain inflammation caused by viral infections when the exact virus type is not identified.
This code covers various conditions such as acute necrotizing encephalitis, lymphocytic choriomeningitis virus encephalitis, and echovirus encephalitis. These synonyms highlight different viral causes and clinical presentations included under this classification. Healthcare providers and coders use ICD-10 code A86 when documenting central nervous system infections like viral ventriculitis, meningoencephalitis caused by viruses, or chronic viral encephalitis without specification of the exact viral agent. Recognizing these terms helps ensure accurate coding of viral brain infections that lack precise identification, supporting effective medical records and appropriate clinical management.
Instructional Notations
Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Viral encephalomyelitis NOS
- Viral meningoencephalitis NOS
