You are an expert in medical coding with 30 years of experience. I would like you to review below clinical chart and recommend appropriate CPT Codes.

"1. Left anterior retroperitoneal spine exposure via low midline incision for L5- S1 exposure including completion L5-S1 diskectomy with removal of previously posteriorly-placed TLIF PEEK cage and re-instrumentation using a 4WEB textured titanium femoral ring-type interbody device with BMP sponges, manufactured bone graft, and two anterior instrumentation screws in conjunction with an anterior spinal instrumentation buttress plate with a single screw into the sacrum; all done under fluoroscopic guidance.
2. Fluoroscopic localization of the spine."