A85
A85: Other viral encephalitis, not elsewhere classified
Non-billable headerICD-10-CM
A85 is a non-billable header ICD-10-CM code for other viral encephalitis, not elsewhere classified. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1: never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- encephalitis due to cytomegalovirus (B25.8)
- encephalitis due to herpesvirus NEC (B10.0-)
- encephalitis due to herpesvirus [herpes simplex] (B00.4)
- encephalitis due to measles virus (B05.0)
- encephalitis due to mumps virus (B26.2)
- encephalitis due to poliomyelitis virus (A80.-)
- encephalitis due to zoster (B02.0)
- lymphocytic choriomeningitis (A87.2)
- myalgic encephalomyelitis (G93.32)
Includes
Conditions this code covers.
- specified viral encephalomyelitis NEC
- specified viral meningoencephalitis NEC
Other codes that can never be billed with A85
Their own Excludes1 notes name this code, so the conflict is not listed above.
- G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead A85
4 child codes. Green means billable.