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CPT 65820: Limbal Incision for Aqueous Drainage in Congenital Glaucoma
CPT code 65820 identifies a limbal incision procedure to improve aqueous humor drainage, commonly used in pediatric patients to treat congenital glaucoma. Nationally, this code represents a specific glaucoma surgical approach distinct from trabeculectomy, aqueous shunt, or laser procedures; it is relevant to ophthalmology service lines, pediatric surgical programs, and specialty glaucoma practices. Key payers addressed in typical analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise explanation of the clinical intent of the procedure, how 65820 fits among related glaucoma surgeries, and payer coverage context for both commercial insurers and Medicare. The publication highlights coding relationships to related procedures, common clinical settings where the surgery is delivered, and practical considerations for billing and claim structuring. The content is intended for clinicians, coding professionals, and revenue cycle managers seeking a clear, national-level summary of the code’s clinical role and payer landscape.
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Billing Code Overview
CPT code 65820 describes an operative procedure in which the provider incises the limbus to improve drainage of aqueous humor from the eye. This surgical intervention is typically performed to treat congenital glaucoma and is most often performed on pediatric patients. The service type is a surgical ophthalmic procedure for glaucoma management. The typical site of service is an operating room or ambulatory surgical center where ophthalmic surgeries are performed on children.
National Reimbursement Benchmarks
Nationally, the average commercial benchmark represented by BUCA ($1,120.90) exceeds Medicare's mean rate ($747.70) by $373.20, indicating materially higher commercial reimbursement for CPT 65820 versus the Medicare average. Blue Cross Blue Shield and UnitedHealth Group sit above both BUCA and Medicare on mean rates, while Aetna and Medicare are lower on the mean spectrum, framing a tiered payer landscape.
Dispersion (P75 minus P25) highlights where rates concentrate: Blue Cross Blue Shield and UnitedHealth Group show the widest spread at $793.10 and $840.70 respectively, signaling greater variability in commercial contracting. Aetna is relatively tight with a spread of $760.00. Cigna and BUCA have spreads of $849.10 and $830.00 respectively, placing them nearer the upper end of variability. Medicare’s interquartile spread is $68.00, the tightest of the group, reflecting limited geographic variation in the Medicare locality set.