What is the 2015 cpt code for open atrial septostomy with bypass?

The CPT code for an open atrial septostomy with bypass performed in 2015 is 33730. This procedure involves creating an opening between the left and right atria to relieve pressure or improve blood flow, typically in patients with congenital heart defects. It's important to consult the most recent coding guidelines or a certified medical coder for accurate billing practices.