Ask Dr. Z

"Redo coronary artery bypass grafting times 3 with reverse autologous saphenous vein graft to the LAD, reverse autologous saphenous vein graft from the aorta to obtuse marginal coronary artery, reverse autologous saphenous vein graft from the aorta to LC.

There were extensive adhesions between all surfaces. Extensive lysis of adhesions was required. A saphenous vein graft was harvested using an endoscopic vein harvest. Patient heparinize. pericardial sac retracted. The patient cannulated, and cardiopulmonary bypass was begun. The aorta crossclamped and pt. received cardioplegia and systemic cooling.

Distal anastomoses were done with 7-0 Prolene in a running technique, Proximal anastomoses were done with 5-0 Prolene. The aortic cross-clamp was removed and the patient underwent complete de-airing of all grafts. The patient was weaned from cardiopulmonary bypass."

Would you use 33512 only? If not what CPT code(s) would you use for this re-do procedure?