The ICD-9 code range for DISEASES OF THE NERVOUS SYSTEM AND SENSE ORGANS 320-389 is medical classification list by the World Health Organization (WHO).
ICD-9 Code range (320-389),DISEASES OF THE NERVOUS SYSTEM AND SENSE ORGANS, contains ICD-9 codes for ORGANIC SLEEP DISORDERS, pain, HEADACHE SYNDROMES, THE EAR AND MASTOID PROCESS, HEREDITARY AND DEGENERATIVE DISEASES.