323 Encephalitis myelitis and encephalomyelitis 
323.0 Encephalitis in viral diseases classified elsewhere 
323.01 Encephalitis and encelphalomyelitis in viral diseases classified elsehwere convert 323.01 to ICD-10-CM
323.02 Myelitis in viral diseases classified elsewhere convert 323.02 to ICD-10-CM 323.1 Encephalitis in rickettsial diseases classified elsewhere convert 323.1 to ICD-10-CM 323.2 Encephalitis in protozoal diseases classified elsewhere convert 323.2 to ICD-10-CM 323.4 Other encephalitis due to infection classified elsewhere 323.41 Other encephalitis and encephalomyelitis due to infection classified elsewhere convert 323.41 to ICD-10-CM 323.42 Other myelitis due to infection classified elsewhere convert 323.42 to ICD-10-CM 323.5 Encephalitis following immunization procedures 323.51 Encephalitis and encelphalomyelitis following immunization procedures convert 323.51 to ICD-10-CM 323.52 Myelitis following immunization procedures convert 323.52 to ICD-10-CM 323.6 Postinfectious encephalitis 323.61 Acute dissemninated encephalomyelitis convert 323.61 to ICD-10-CM 323.62 Other postinfectious encephalitis and encephalomyelitis convert 323.62 to ICD-10-CM 323.63 Postinfectious myelitis convert 323.63 to ICD-10-CM 323.7 Toxic encephalitis 323.71 Toxic encephalitis and encephalomyelitis convert 323.71 to ICD-10-CM 323.72 Toxic myelitis convert 323.72 to ICD-10-CM 323.8 "other causes of encephalitis, myelitis, and encephalomyelitis" 323.81 Other causes of encephalitis and encephalomyelitis convert 323.81 to ICD-10-CM 323.82 Other causes of myelitis convert 323.82 to ICD-10-CM 323.9 Unspecified cause of encephalitis convert 323.9 to ICD-10-CM