CPT code 66175 denotes a surgical ophthalmology procedure that expands the eye’s aqueous outflow (drainage) canal and includes placement of a device or stent to relieve intraocular pressure. This procedure is clinically important in managing glaucoma and other conditions where impaired aqueous drainage leads to elevated intraocular pressure and risk of vision loss. Nationally, use of implantable drainage-support techniques is growing as surgeons adopt minimally invasive approaches aimed at reducing medication burden and improving pressure control.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides comparative benchmarks on utilization and reimbursement trends for CPT code 66175, summarizes relevant policy updates affecting coverage and prior authorization, and situates the code within clinical care pathways for glaucoma management. Readers will find concise explanations of coding scope and typical settings of care (ambulatory surgical centers and hospital outpatient departments), plus guidance on where this procedure fits relative to other glaucoma interventions. Data limitations: Data not available in the input for payer-specific rates, ICD-10 pairings, and associated taxonomies.