CPT® Code 33258

Add-On Code

Operative tissue ablation and reconstruction of atria, performed at the time of other cardiac procedure(s), extensive (eg, maze procedure), without cardiopulmonary bypass (List separately in addition to code for primary procedure)

Operative tissue ablation and reconstruction of the atria, as described by CPT® Code 33258, refers to a specialized surgical procedure aimed at correcting chronic atrial fibrillation, which is characterized by rapid and uncoordinated contractions of the upper chambers of the heart, leading to an irregular and often rapid heartbeat. This extensive procedure is typically performed during another cardiac operation, such as a maze procedure, which is designed to create new electrical pathways in the heart. These pathways help to interrupt the abnormal electrical signals that cause atrial fibrillation, thereby restoring normal heart rhythm. The procedure is conducted without the use of cardiopulmonary bypass, distinguishing it from similar procedures that may require this support. The maze procedure involves making precise incisions in the atrial tissue to prevent the conduction of errant electrical impulses, allowing for the restoration of normal electrical activity from the sinoatrial node to the atrioventricular node. This surgical intervention not only aims to restore normal contractions of the atria but also to improve their size and function, enabling them to effectively pump blood into the ventricles. The careful execution of this procedure is critical for achieving the desired outcomes in patients suffering from atrial fibrillation.