CPT® Code 96571

Add-On Code

Photodynamic therapy by endoscopic application of light to ablate abnormal tissue via activation of photosensitive drug(s); each additional 15 minutes (List separately in addition to code for endoscopy or bronchoscopy procedures of lung and gastrointestinal tract)

Photodynamic therapy (PDT) is a medical treatment that utilizes a light-activated drug to target and destroy abnormal tissue, particularly in the lungs and gastrointestinal tract. The process begins with the administration of a photosensitive drug, such as Photofrin, which is delivered intravenously approximately 48 hours before the procedure. This drug is absorbed by various body tissues, including cancerous or abnormal cells. Following this, during a separate endoscopic procedure, either gastrointestinal endoscopy or bronchoscopy, a low-intensity laser is applied to the affected area. The light from the laser activates the drug, leading to a chemical reaction that results in the destruction of the targeted abnormal tissue. It is important to note that CPT® Code 96570 is used to report the first 30 minutes of photodynamic therapy, while CPT® Code 96571 is designated for each additional 15 minutes of therapy performed beyond the initial time frame.