Ask Dr. Z

Hello! We are encountering the following dilemma, and would like guidance on the correct coding. Patient had a previous Afib ablation (Jan 2012) which was mapped to the pulmonary veins, patient returns (Jan 2013) for an Afib ablation of an additional area, on this patient the afib was mapped to the left atrium roof, mitral ridge ligament of marshal and the LA anterior line. Per report "12. PV's already isolated". Since the CPT code 93656 indicates that Afib ablation is performed via pulmonary vein isolation, as the ablation was not performed via pulmonary vein isolation (the second time), can this code be used? Thank you in advance