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93656 vs. 93653. To save space, I am only including the actual ablation portion of the report. 

"Pt presented for atrial fib ablation. A complete 3D electroanatomic map of the left atrium, pulmonary veins, and region by the left atrial appendage was drawn with an Octaray mapping catheter. All four pulmonary veins were still electrically isolated from prior ablation. There was a fragmented signal anterior to the right-sided PVs and one lesion was placed here on the septal side. Some scarring was noted along the roof and inferior posterior wall of the LA, with a few areas of other scattered scarring. Next, using a thermocool Smart Touch ST SF DF ablation catheter , the roof line connecting the left and right superior PVs was reenforced. A floor line was created conecting the left and right inferior PVs. A "+" was created in the PW creating four quadrants, and fractionated signals were ablated within each quadrant. Entrance and exit block were demonstrated. A repeat map of the LA confirmed posterior wall isolation. All lines were then removed, and protamine was given."