The ICD-9 code range INFLAMMATORY DISEASES OF THE CENTRAL NERVOUS SYSTEM for 320-326 is medical classification list by the World Health Organization (WHO).
Bacterial meningitis
Meningitis due to other specified bacteria
Meningitis due to other organisms
Meningitis of unspecified cause
Encephalitis myelitis and encephalomyelitis
Encephalitis, myelitis, and encephalomyelitis in viral diseases classified elsewhere
Other encephalitis due to infection classified elsewhere
Encephalitis following immunization procedures
Postinfectious encephalitis, myelitis, and encephalomyelitis
Other causes of encephalitis
Intracranial and intraspinal abscess