Emergency: 119
AMDA-IMIC

A86 Unspecified viral encephalitis

Billable

Block: Viral and prion infections of the central nervous system (A80-A89)

Includes

  • Viral encephalomyelitis NOS
  • Viral meningoencephalitis NOS
✓
This category is a complete, billable diagnosis code.

No additional specificity is required — submit A86 directly on claims and documentation without a subcode extension.

Last reviewed: September 2026