CPT code 66150 denotes an ophthalmic surgical procedure that creates a fistula by trephination with removal of iris tissue to relieve elevated intraocular pressure in glaucoma patients. This procedure is an established, procedure-specific intervention in the surgical management of glaucoma and is performed when medical or less invasive surgical treatments are insufficient. Nationally, procedural coding clarity for 66150 affects clinical documentation, facility billing, and payer coverage determinations for ophthalmic surgery.

Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines payer coverage considerations and common billing practices observed across commercial and public payers.

Readers will learn the clinical context and purpose of 66150, expected sites of service, and the typical service type involved. The report summarizes common modifiers used with this code and highlights areas where documentation and coding precision are important for claim adjudication. Policy and reimbursement trends, billing nuances, and benchmarks are presented to help coding professionals, practice managers, and policy analysts understand how 66150 is applied in practice and how payers commonly process related claims. Data not available in the input is noted where applicable.