CPT® Code 92921

Add-On Code

Percutaneous transluminal coronary angioplasty; each additional branch of a major coronary artery (List separately in addition to code for primary procedure)

The procedure described by CPT® Code 92921 refers to a percutaneous transluminal coronary angioplasty (PTCA) performed on each additional branch of a major coronary artery. This procedure is typically indicated when there are blockages in multiple branches of the coronary arteries, which supply blood to the heart muscle. During PTCA, a physician accesses the coronary arteries through the skin, usually via the femoral artery, to treat these blockages. The process involves puncturing the artery, placing a sheath, and advancing a guidewire through the aorta to the site of the occlusion. A catheter with a balloon tip is then used to inflate at the blockage site, compressing the plaque against the artery wall to restore blood flow. The procedure may require multiple inflations of the balloon to achieve optimal results. Following the angioplasty, contrast dye is injected to perform a completion angiography, ensuring that the treated artery remains open and patent. It is important to note that CPT® Code 92921 is used in conjunction with CPT® Code 92920, which is designated for the PTCA of a single major coronary artery or branch, thereby allowing for accurate coding of additional branches treated during the same session.