Patients initial surgery was a Removal of bilateral silicone implants using DIEP free flap. The patient was brought back to the operating room 4 days later for an exploration with thrombectomy and revision of venous anastomosis and restoration of flow. The patient was brought back for a 3rd operation a few days later. The flap failed. Removal of thrombosed left DIEP free flap with primary closure. I am not sure what to code for the second and 3rd operation. Do I code 19364 with a 52 modifier?