CPT code 96571 denotes photodynamic therapy administered to abnormal tissue during the same session as a primary endoscopy or bronchoscopy to destroy cancerous or precancerous cells. The procedure involves administration of a photosensitizing drug followed by exposure to a specific wavelength of light over exposure intervals of 38 to 52 minutes, with additional time billed in 15-minute increments. Nationally, this code captures a specialized, procedural therapy used in endoscopic and bronchoscopic oncology and interventional pulmonology settings and has implications for facility and professional billing coordination.

Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, typical sites of service, common modifiers used with this service, and the payer landscape for authorization and coverage considerations. The publication outlines coding specificity for session-based photodynamic therapy performed adjunctively during endoscopic procedures, billing nuances related to time increments, and the types of clinical indications driving use of the code. Data not available in the input is noted where applicable, and the piece focuses on practical policy and billing clarity for national audiences involved in oncology, gastroenterology, interventional pulmonology, and facility billing.