laparoscopic resection retroperitoneal mass cpt

My Dr. did a laparoscopic resection of a left upper quadrant retroperitoneal mass-probable ganglionoma. This was after a previously performed total parathyroidectomy and a subtotal distal pancreatectomy/splenectomy. I think the right CPT® code for an open procedure would be a 49203 but I can't seem to find a corresponding lap code. Can anyone help me out?
thanks.