CPT® Code 92992

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Atrial septectomy or septostomy is a specialized palliative procedure aimed at enhancing oxygen saturation levels in patients diagnosed with complete transposition of the great arteries, a congenital heart defect. This procedure is performed using a transvenous method, which involves accessing the heart through a vein rather than through an incision in the chest. The technique described by CPT® Code 92992 specifically refers to the use of a balloon, commonly known as the Rashkind balloon septostomy. During this procedure, a small incision is made in the groin area to expose the femoral vein, which serves as the access point for the catheter. A balloon-tipped catheter is then carefully threaded through the femoral vein and navigated to the right atrium of the heart. Once in position, the catheter is advanced through the foramen ovale, a natural opening between the atria, into the left atrium. The balloon is inflated within the left atrium and subsequently pulled back across the atrial septum, resulting in a tear that enlarges the existing hole in the interatrial septum. This enlargement allows for improved blood flow and oxygenation, which is critical for patients with this condition. The procedure is performed under imaging guidance to ensure accurate placement and effectiveness, and it is essential for medical coders and billers to understand the nuances of this procedure for accurate coding and billing purposes.