CPT code 27665 covers surgical repair of one or more extensor tendons of the leg in patients who have had a prior repair, with or without graft placement. This revision tendon repair procedure is clinically significant because it addresses persistent dysfunction, recurrent rupture, or pain after an initial repair — issues that can affect mobility, rehabilitation needs, and downstream costs of care. Nationally, procedures for complex tendon reconstruction are performed across hospital operating rooms and ambulatory surgery centers and are relevant to both commercial payers and public programs.

Key payers in typical coverage analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, expected sites of service, common billing modifiers (where provided), and how this code is commonly grouped with related surgical services. The publication also outlines benchmarking elements and policy considerations that influence prior authorization, claim edits, and bundling decisions. Data not available in the input is noted where applicable. The content is intended to inform coding accuracy, payer interactions, and operational planning for surgical teams and billing staff nationwide.