CPT code 66172 describes a glaucoma revision procedure in which a surgeon re-creates a fistula and removes residual trabecular meshwork from a prior surgery, with intraoperative injection of antifibrotic agents to reduce scarring and preserve outflow. This intervention is clinically important because it addresses persistent or recurrent elevated intraocular pressure after earlier filtering surgery, with implications for vision preservation and downstream utilization of glaucoma therapies. Nationally, the code captures a specialized ophthalmic surgical service commonly performed in ambulatory surgical centers and hospital operating rooms.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for 66172, typical sites of service, and the service type. The publication also provides benchmarks and policy-relevant content: reimbursement and coverage patterns, coding considerations for revision glaucoma surgery, and clinical factors that influence utilization. Where input data is not provided, the report notes that those fields are unavailable. This resource is intended to inform coding, billing, and policy discussions related to secondary glaucoma surgical management at a national level.