Summary & Overview
HCPCS Q4400: Polygon3 Membrane, Surgical Add-On
HCPCS Level II code Q4400 designates the Polygon3 membrane, billed per square centimeter as an add-on item in addition to a primary surgical procedure. This code captures a procedural supply — a membrane product placed at the operative site to support tissue repair or separation — and is significant for accurate procedural accounting and supply reimbursement nationally. Proper use of Q4400 affects hospital and ambulatory surgery center supply costs and billing transparency for device-enabled procedures.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical role, typical sites of service, and implications for coding and billing workflows. The publication outlines benchmarks for utilization and payment where available, notes common policy considerations for add-on supply codes, and provides clinical context about when a membrane product would be reported separately from a primary procedure. Data not available in the input will be identified as such rather than inferred.
Billing Code Overview
HCPCS Level II code Q4400 describes a Polygon3 membrane billed per square centimeter as an add-on, listed separately in addition to the primary procedure. This item represents a biologic or synthetic membrane product used in surgical procedures that require a membrane placed at the operative site.
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Service type: Surgical implantable membrane product used as an adjunct to a primary surgical procedure
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Typical site of service: Hospital operating room, ambulatory surgery center, or other procedural settings where the primary surgery is performed
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A typical patient is a 58-year-old diabetic with a non-healing full-thickness lower extremity wound after debridement in an outpatient surgical center. The surgeon performs surgical wound bed preparation and applies a biosynthetic dermal matrix, using Q4400 (Polygon3 membrane) measured by square centimeter as an add-on product to the primary wound procedure. The clinical workflow includes pre-procedure assessment and wound measurement, surgical debridement or excision under local or regional anesthesia, hemostasis, application of the Polygon3 membrane to the prepared wound bed, fixation or dressing, and postoperative instructions for wound care and follow-up visits for dressing changes and assessment of integration and epithelialization. Typical sites of service are outpatient hospital departments, ambulatory surgical centers, and specialty wound care clinics where advanced wound matrix products are applied as adjuncts to primary reconstructive or closure procedures.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
59 | Distinct procedural service | When the primary procedure is distinct and the membrane application is separate and unrelated to other services on the same date. |
76 |