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Rob Rubenstein MD Neurologist - The Doctors Clinic. Topic – EMG/NCV Testing. Follow up on Botox for Migraine. Old code: 64612 and 64613 (modified) New code: 64615 . EMG/NCV Testing. -What it means -Why we do it -How we code it . It’s not torture!. NCV = Nerve Conduction Velocity.
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Rob Rubenstein MDNeurologist - The Doctors Clinic Topic – EMG/NCV Testing
Follow up on Botox for Migraine • Old code: 64612 and 64613 (modified) • New code: 64615
EMG/NCV Testing -What it means -Why we do it -How we code it
NCV = Nerve Conduction Velocity • It simply determines how fast a nerve transmits it’s electrical signal • It assesses the peripheral nerves only – “motor” & “sensory”
What it doesn’t do • Doesn’t detect central nervous system problems like stroke, Multiple Sclerosis, brain tumors, etc…
Common nerve problems evaluated by nerve conduction testing • Carpal tunnel syndrome • Ulnar, peroneal neuropathy • Peripheral neuropathy – e.g. diabetes, alcohol, chemotherapy And some less common disorders – GuillainBarre syndrome, CIDP, ALS,
How NCV testing works • - I measure the distance between 2 stimulation points, in millimeters, with my $1.95 tape measure • - The $20,000 machine measures the time, in milliseconds, it takes the nerve to transmit the signal between the two stimulation points • - Voila! Distance/time, like miles/hours, tells the speed (conduction velocity) of the nerves. Nerves travel slower if pinched (at the elbow), compressed (in the Carpal Tunnel), damaged (neuropathies like Guillain-Barre, Diabetes, Alcohol)
Coding • Straightforward – it’s based on the total number of nerves examined: • 1-2 nerves: 95907 • 3-4 nerves: 95908 • 5-6 nerves: 95909 • 7-8 nerves: 95910 • 9-10 nerves: 95911 • 11-12 nerves: 95912
Electromyography • Doesn’t directly measure the nerves, but instead directly measures the electrical activity of the muscle fibers themselves • Useful to detect pinched nerves in the neck or back, muscle diseases like muscular dystrophy or myopathies • Will be abnormal if the nerve supplying the muscle examined is severely damaged, like a bad carpal tunnel syndrome, severe neuropathy, sciatica, Lou Gehrig’s disease, etc…
Continued: • -There are no electric shocks involved • - 28-30 gauge needle that’s coated in Teflon, with the last millimeter bare metal. It works a lot like a phonograph needle • For many people, the EMG part of the exam is less irritating than the NCV test • Can tell if a pinched nerve is new, old, or both
EMG Coding • 2 Determinants: • 1. Is an NCV study also performed? • 2. Is it a limited study (5 or fewer muscles examined) or not (more than 5 muscles)
Done by itself, with no NCV study: • -Limited study: 95870 • -Full limb: • 1 limb: 95860 • 2 limbs: 95861 • 3 limbs: 95863 • 4 limbs: 95864
“Add On” with NCV study: - Limited: 95885 - 1 Extremity: 95886 (modified by the number of limbs examined)
Less Common Codes 95887: EMG of a non-extremity add on to NCV - facial muscles in Bell’s Palsy -paraspinal muscles 95874: Guided Nerve Destruction, Needle EMG - used in directing Botox injections for spasticity
Bonus TalkThe Neurologic Exam - Gait • 1. Normal • 2. Footdrop • 3. Hemi-paretic • 4. Parkinsonian – Hemi, Bilateral • 5. Hyperkinetic • 6. Orthopedic • 7. Trendelenberg • 8. Vestibular • 9. Alcoholic-Cerebellar • 10. Senile – anteropulsion/retropulsion • 11. Astasia-abasia • 12.Romberg