ICD-10-CM > A00-B99 > A80-A89 > A81 > A81.8 A81.8 Other atypical virus infections of central nervous system Non-Billable/Non-Specific Codes A81.81KuruA81.82Gerstmann-Sträussler-Scheinker syndromeA81.83Fatal familial insomniaA81.89Other atypical virus infections of central nervous system