Ask Dr. Z

We have a physician using the Coolief system to perform geniculate nerve ablation. Procedure: Ultrasound-guided nerve ablation of the following nerves: Superior lateral geniculate branch from the vastus lateralis, Superior medial geniculate branch from the vastus medialis, Inferior medial geniculate branch from the saphenous nerve Ultrasound confirmed that needles were 50% depth of the femur and tibia and at the correct anatomic locations for all 3 needles. Motor stimulation was tested at 2.0 V with no leg movement. An additional 2 mL of 1% lidocaine without epinephrine was slowly injected at each of the 3 previously mentioned locations. Then a thermo-radiofrequency ablation of each of the geniculate nerves was done at 80°C for 2 minutes and 30 seconds each. The needles were then withdrawn. Is it appropriate to report 64640 or should it be an unlisted 64999? In addition, can we report our code per nerve or is each knee 1 treatment area, so 1 CPT?