CPT code 66740 represents a surgical ophthalmology procedure that involves partial separation of the ciliary body to decrease aqueous humor production and reduce intraocular pressure. This procedure is clinically significant as a treatment option for glaucoma or other conditions leading to ocular hypertension; it is performed in operative settings such as hospital operating rooms or ambulatory surgical centers and can influence clinical pathways for patients with refractory intraocular pressure.

Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a national overview of how CPT code 66740 is classified, the clinical intent of the service, and contextual information useful for coding and claims processing. The publication outlines benchmarks and typical site-of-service considerations, summarizes common billing modifiers when available, and highlights clinical context relevant to preauthorization and documentation. Where input data is missing, the text notes that information is not available.

This summary is intended for clinical coders, revenue cycle staff, and policy analysts seeking a concise reference to the procedure's purpose, service setting, and the major payers relevant to nationwide billing and coverage discussions.