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2007 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Nervous System And Sense Organs 320-389 > Hereditary And Degenerative Diseases Of The Central Nervous System 330-338 > 2007 ICD-9-CM Diagnosis 337 Disorders of the autonomic nervous system This code may be outdated. View the most recent version of ICD-9-CM 337 Diseases of the parasympathetic or sympathetic divisions of the AUTONOMIC NERVOUS SYSTEM; which has components located in the CENTRAL NERVOUS SYSTEM and PERIPHERAL NERVOUS SYSTEM. Autonomic dysfunction may be associated with HYPOTHALAMIC DISEASES; BRAIN STEM disorders; SPINAL CORD DISEASES; and PERIPHERAL NERVOUS SYSTEM DISEASES. Manifestations include impairments of vegetative functions including the maintenance of BLOOD PRESSURE; HEART RATE; pupil function; SWEATING; REPRODUCTIVE AND URINARY PHYSIOLOGY; and DIGESTION. 337 is a non-specific code that cannot be used to specify a diagnosis 337 includes: disorders of peripheral autonomic, sympathetic, parasympathetic, or vegetative system 337 excludes: familial dysautonomia [Riley-Day syndrome] (742.8)