Ask Dr. Z

I'm a charge analyst for a hospital. We've started doing cases where the thoracic surgeon comes to the EP lab to work with an EP Physician to perform a hybrid maze procedure. My question is how to code the maze procedure, 33254 vs 33255. If the surgeon ablates several areas does that make it extensive (33255)? We've performed two cases; the first case was for inappropriate sinus tachycardia. The EP Physician performed an EP Study with drug infusion and 3D mapping (93620,93623,93613). The surgeon performed a Right video-assisted thoracic surgery, right-sided cardiac ablation, crista terminalis ablation, superior and inferior venacaval ablations. The second case was for Postural orthostatic tachycardia syndrome. The EP Physician performed an SVT ablation (93653) along the crista terminalis, the surgeon performed Right video-assisted thoracic surgery, right pulmonary vein isolation, ablations at the right crista terminalis, and right superior and inferior venacava. Would both of the cases be coded as 32555, along with the EP codes I have?