Peripheral neuropathy - unexplained peripheral neuropathy with pain of a neuropathic pattern, and with demonstrated motor loss or sensory loss, all of unknown etiology and.Localization of focal neuropathies or compressive lesions (e.g., Bell's palsy of the facial nerve, carpal tunnel syndrome, cubital tunnel syndrome, tarsal tunnel syndrome, nerve root compression, neuritis, motor neuropathy, mononeuropathy, radiculopathy, plexopathy) or.
Differential diagnosis of symptom-based complaints (e.g., pain in limb or joint, weakness, fatigue, cramps, twitching (fasciculations), disturbance in skin sensation or paresthesias ) provided the clinical assessment supports the need for a study or. Differential diagnosis of physical examination findings of sensory loss, weakness and/or muscle atrophy with no known etiology (e.g., diabetes, hypothyroidism, lupus, rheumatoid arthritis, etc.) or. Diagnosis or confirmation of suspected generalized neuropathies (including uremic, metabolic or immune) (e.g., amyotrophic lateral sclerosis, Guillain-Barré Syndrome, muscular dystrophy, post-polio syndrome) or. Diagnosis of muscle disorders (e.g., myositis, myopathy) or. Diagnosis and monitoring of neuromuscular junction disorders (e.g., myasthenia gravis, myasthenic syndrome) using repetitive nerve stimulation or. 
Diagnosis and prognosis of traumatic nerve lesions (e.g., spinal cord injury, trauma to nerves) or.Member has any of the following indications:
Aetna considers nerve conduction velocity (NCV) studies medically necessary when both of the following criteria are met:
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