A89 Unspecified viral infection of central nervous system

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

MS-DRG index

Defines the logic of DRG(s) 097-099 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 049.9 Unspecified non-arthropod-borne viral diseases of central nervous system (approximate)

Diagnosis Index entries for A89

• Infection, infected, infective (opportunistic) › virus, viral NOS › central nervous system

Nearby codes

• A89 Unspecified viral infection of central nervous system (this code)