Ask Dr. Z

This provider did a left AVG with plication. "He did an arterial anastomosis, first applying vascular clamps using a blade and Potts scissors arteriotomy was done. An end-to-side anastomosis was done and noted to have good flow in the graft. Then an end-to-side anastomosis was done on the high brachial vein. Prior to completion all vessels were flushed and hemostasis was noted. Doppler signals above and below the venous anastomosis were noted to be very strong. However there were faint Doppler tones in the radial and ulnar arteries, so two separate areas of plication of the AVG were sutured. Doppler tones on the radial and ulnar arteries were then back at baseline." This was done on a patient with ESRD on hemodialysis needing permanent access. Should they have used the new codes for dialysis circuit (36901-36909)? Or should codes 36830 and 37607 be used instead?