HCPCS Level II code Q4104 denotes the Integra bilayer matrix wound dressing billed per square centimeter as an add-on, listed separately in addition to a primary procedure. This code captures use of a commercially manufactured bilayer biomaterial applied to manage complex wounds, support dermal regeneration, and protect wound beds. Nationally, use of specific product-level HCPCS codes affects coding accuracy, reimbursement pathways, and supply management for wound-care programs.

Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides payer coverage context and benchmarking where available, and highlights clinical and billing considerations related to add-on product coding.

Readers will learn what the code represents, typical sites of service and clinical contexts for Integra bilayer matrix application, and what to expect in payer coverage patterns and billing practice. The report summarizes available benchmarks, common modifier practices, and relevant policy updates when present. Data not available in the input is noted explicitly where applicable.