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CPT 11721: Surgical Debridement of Six or More Nails
CPT code 11721 designates the surgical debridement (debulking or removal) of six or more abnormal, diseased, or infected nails. The code captures a procedural service commonly performed by podiatrists and other surgeons when nonoperative care is insufficient or when nail pathology poses infection or functional risks. Nationally, the code matters for clarifying procedural intent, resource use, and appropriate site-of-service billing for multi-nail surgical interventions.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical indications, expected service settings, and common related procedural codes. The publication provides benchmarks and utilization context, payer coverage considerations, and coding relationships to adjacent procedures such as single- or few-nail debridement codes. Policy and reimbursement notes address how this code is positioned relative to less extensive nail procedures and where coding specificity affects claim adjudication.
This summary equips clinicians, billing staff, and policy analysts with a concise reference to the code’s clinical scope, payer landscape, and the types of coding and billing questions that typically arise for multi-nail surgical debridement.
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Billing Code Overview
CPT code 11721 describes a surgical procedure to debride (debulk or remove) six or more abnormal, diseased, or infected nails. This is a podiatric surgical service that involves partial or complete removal of multiple toenails or fingernails when conservative treatments have failed or when infection or deformity necessitates operative management.
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Service type: Surgical nail debridement / partial or complete nail removal of six or more nails
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Typical site of service: Ambulatory surgical center or hospital outpatient department; may also be performed in an office-based surgical setting when appropriate
National Reimbursement Benchmarks
National averages place Blue Cross Blue Shield well above Medicare and BUCA: Medicare’s mean is $46.6 while BUCA’s mean commercial rate is $109.5, a gap of $62.9 that highlights substantial commercial premium over the federal program. Other commercial payers fall between these points, with UnitedHealth Group ($62.6) and Cigna ($55.5) closer to Medicare’s level, and Blue Cross Blue Shield ($153.4) and Aetna ($35.0) at opposite ends of the mean spectrum.
Dispersion measured as P75 minus P25 is widest for Blue Cross Blue Shield at $59.1 (P75 $185.8 minus P25 $126.7), indicating greater variability, followed by UnitedHealth Group at $40.0 and Cigna at $37.5. Aetna shows the tightest interquartile spread at $25.0, with BUCA’s interquartile width at $47.4 and Medicare’s at $4.0, making Medicare the most consistent payer by this measure.