CPT® Code 33924

Add-On Code

Ligation and takedown of a systemic-to-pulmonary artery shunt, performed in conjunction with a congenital heart procedure (List separately in addition to code for primary procedure)

The procedure described by CPT® Code 33924 involves the ligation and takedown of a systemic-to-pulmonary artery shunt, which is a surgical intervention typically performed in conjunction with a congenital heart procedure. This procedure is necessary when a previously established shunt, which is a connection between a systemic artery and a pulmonary artery, needs to be closed off and removed. The ligation process entails carefully exposing the heart through a median sternotomy or thoracotomy, which are surgical approaches that allow access to the thoracic cavity. Once the heart is accessed, the shunt is meticulously exposed by dissecting the surrounding tissue and any adhesions that may have formed. The control of the shunt is achieved by placing soft rubber tubing both proximally and distally to the shunt, which helps in managing the blood flow during the procedure. Finally, suture ligatures are applied at both ends of the shunt, after which the shunt is divided and excised from the body. This procedure is listed separately in addition to the code for the primary congenital heart procedure being performed, highlighting its significance in the overall surgical management of congenital heart defects.