Ask Dr. Z

Patient has atrial fibrillation referred for ablation. per report left atrium was mapped and the pulmonary veins were isolated from previous ablation. Only the posterior left atrial wall was ablated. Normally, posterior wall isolation is an adjunct after PVI isolation with atrial fibrillation. Reading the guidelines as recommended by CPT to use 93653 for non-PVI isolation. Is this correct? My dilemma is whether to use 93653 or 93656 since this is atrial fibrillation and not atrial flutter. Appreciate your feedback Dr. Z. Thankyou.