CPT® Code 33944

Backbench standard preparation of cadaver donor heart allograft prior to transplantation, including dissection of allograft from surrounding soft tissues to prepare aorta, superior vena cava, inferior vena cava, pulmonary artery, and left atrium for implantation

The CPT® Code 33944 refers to the backbench standard preparation of a cadaver donor heart allograft prior to transplantation. This procedure involves meticulous dissection of the heart allograft from the surrounding soft tissues to prepare critical anatomical structures, including the aorta, superior vena cava, inferior vena cava, pulmonary artery, and left atrium, for implantation into the recipient. The process begins with the careful removal of the heart allograft from its sterile container, ensuring that it is placed on a sterile table to maintain a sterile environment. The heart is kept on ice and continuously bathed in a cold preservation solution to preserve its viability for transplantation. During the preparation, the external surface of the heart is thoroughly inspected, and the coronary arteries are palpated to assess their condition. If any repairs are necessary, these are performed as a separately reportable procedure, ensuring that the allograft is in optimal condition for implantation. The aorta is also inspected, with particular attention given to identifying and repairing or excising the cannulation site. The superior vena cava is examined, and if the azygos vein orifice is present, it may be excised or oversewn as needed. Any thrombus found during the inspection is removed and sent for culture to rule out any potential complications. Further evaluation of the inferior vena cava includes measuring the distance between the division of the vein and the coronary sinus. The pulmonary artery is separated from the aorta, and the pulmonary valve is inspected for any abnormalities. The pulmonary vein orifices are joined to ensure proper anatomical alignment. The mitral valve and atrial septum are also inspected, and any noted defects are addressed in a separately reportable procedure. Excess left atrial tissue is excised, and a left atrial cuff is created to facilitate a secure connection during transplantation. The aorta is trimmed, and the aortic valve is inspected to ensure its functionality. Additionally, the left atrial appendage is examined, and the amputation site is oversewn as necessary to prevent complications. Finally, the heart is perfused with cardioplegia solution as needed to protect the myocardial tissue during the transplantation process. The allograft is then wrapped in an iced pad, placed in a basin, and maintained in cold saline until the transplantation procedure begins, ensuring that the heart remains in optimal condition for successful implantation into the recipient.