CPT code 66820 denotes an anterior capsulotomy procedure to remove membranous opacification of the lens capsule (secondary membranous cataract) using a needle or specialized knife. This targeted ophthalmic procedure restores visual axis clarity after posterior capsule changes and is an important, commonly billed intervention in postoperative cataract care across the United States. Its clinical relevance stems from preserving or recovering visual function and avoiding more invasive interventions.

Key national payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of coding context, clinical indications, and typical sites of service for 66820, along with benchmarking considerations and common billing modifiers. The publication presents policy and billing implications relevant to practitioners and billing administrators, summarizes typical reimbursement and claim considerations where available, and outlines clinical context for payer coverage decisions.

The content is designed to help administrators and clinicians understand the procedural definition, where it is commonly performed, and the billing constructs associated with 66820. Data not available in the input is noted where applicable; the narrative focuses on national applicability rather than state-specific rule sets.