HCPCS Level II code Q4108 represents the unit-based billing of an Integra dermal matrix, charged per square centimeter as an add-on to a primary surgical procedure. The code captures supply and material costs for a biologic or synthetic skin substitute used in wound reconstruction, burn care, and complex soft-tissue repair. Nationally, use of skin substitutes influences episode cost, surgical planning, and coding compliance across inpatient and outpatient operative settings.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for Integra matrix use, documentation and coding considerations tied to add-on supply billing, common modifiers and their typical applications, and where applicable coverage and reimbursement patterns from major payers. The publication also outlines benchmarks for per-square-centimeter supply billing and highlights policy updates or payer-specific requirements when available.

This report is intended for clinical coders, billing managers, and policy analysts seeking a national perspective on billing practice for additive dermal matrix supplies. Data not available in the input is explicitly noted where applicable.