CPT code 66700 represents a surgical ophthalmology procedure that destroys part of the ciliary body using thermal energy to reduce aqueous humor production and lower intraocular pressure. Nationally, this code is relevant for clinicians and payers involved in glaucoma and refractory ocular hypertension management because it corresponds to an interventional approach when medical therapy is insufficient. The procedure is typically performed in ambulatory surgical centers or hospital operating rooms by ophthalmic surgeons.

Key payers in this 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, and commonly associated practice workflows. The publication addresses billing considerations, common modifier usage patterns, and reimbursement context where available. It also summarizes clinical indications and how the service fits within glaucoma care pathways.

This report is intended for a national audience of clinicians, coding professionals, and payer policy analysts seeking a focused briefing on CPT code 66700, its clinical purpose, and the billing environment surrounding thermal destruction of the ciliary body. Data not available in the input is indicated where applicable.