Summary & Overview
HCPCS Q4106: Dermagraft, Per Square Centimeter
HCPCS Level II code Q4106 denotes Dermagraft billed per square centimeter, a bioengineered skin substitute used in the management of complex or chronic wounds. Nationally, coverage and payment for skin substitutes matter because they impact access to advanced wound therapies, influence clinical decision-making for non-healing wounds, and drive significant outpatient wound care expenditures. This analysis covers major commercial and public payers and summarizes policy and payment context for national audiences.
Key payers covered include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of payer coverage patterns, typical settings where Dermagraft is administered, and comparative benchmarks for coding and billing practice. The report highlights clinical context for use of Dermagraft, common billing modifiers, and areas where policy updates may affect claims processing. It also identifies gaps in available input data when specific payer policy details or associated diagnosis codes are not provided.
The publication is intended for clinicians, billing professionals, and policy analysts seeking a national-level reference on the use and billing of HCPCS Level II code Q4106 for Dermagraft per square centimeter.
Billing Code Overview
HCPCS Level II code Q4106 represents Dermagraft, billed per square centimeter, an advanced biologic skin substitute used in wound care. The service type is advanced wound care application / skin substitute provision. The typical site of service is outpatient wound care clinics, hospital outpatient departments, and specialty wound centers.
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Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with a chronic non-healing diabetic foot ulcer refractory to standard wound care presents to a wound care clinic for advanced biologic therapy. Following debridement and wound bed preparation, the clinician measures the wound area and determines Dermagraft application is appropriate. The clinical workflow includes pre-procedure assessment (vascular status, infection control, glycemic optimization), documentation of wound dimensions and prior conservative treatments, ordering Dermagraft by square centimeter using billing code Q4106, obtaining informed consent, and applying the Dermagraft graft to the prepared wound under sterile conditions. Post-application care instructions, dressing selection, and scheduled follow-up visits for monitoring and repeat dressing changes are documented. If multiple grafts or repeat applications are needed, each unit is billed per square centimeter as Q4106 with appropriate modifiers for site, multiple procedures, or payer-specific circumstances.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when labor, time, or intensity substantially exceeds usual for Dermagraft application and documentation supports extraordinary work. |