G90.0 Idiopathic peripheral autonomic neuropathyNon-billable header with 2 child codes.
G90 Disorders of autonomic nervous systemG90.0 Idiopathic peripheral autonomic neuropathy (this code)G90.01 Carotid sinus syncopeG90.09 Other idiopathic peripheral autonomic neuropathyG90.1 Familial dysautonomia [Riley-Day]G90.2 Horner's syndromeG90.3 Multi-system degeneration of the autonomic nervous system