Summary & Overview
HCPCS Q4394: Surgraft per Square Centimeter, Add-On
HCPCS Level II code Q4394 designates Surgraft aca billed per square centimeter as an add-on, list-separately supply used during surgical procedures. As an add-on HCPCS supply code, Q4394 captures area-based graft product usage and is important for accurate clinical documentation and supply cost tracking in operative settings nationwide. Proper use of this code affects facility and professional claim detail where graft materials are supplied in addition to a primary operative procedure.
This analysis covers common national payers including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of clinical context and billing posture for Q4394, expected sites of service, commonly accepted modifiers, and where to look for payer-specific coverage guidance. The publication highlights benchmarks and coding considerations relevant to supply-based add-on billing, potential documentation elements needed to support area-based measurement, and pointers for reconciling supply charges with primary procedure claims. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code Q4394 represents Surgraft aca, billed per square centimeter as an add-on service to be listed separately in addition to a primary procedure. This code describes the application of a surgically applied graft product measured by area.
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Service type: Surgical grafting product application billed by area
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Typical site of service: Operative or procedural settings (hospital operating room, ambulatory surgery center, or other procedural environments)
Clinical & Coding Specifications
Clinical Context
A middle-aged patient presents to an outpatient wound care clinic with a large, non-healing full-thickness skin defect after surgical excision of a basal cell carcinoma on the forearm. Prior attempts at primary closure and local flap reconstruction are not feasible due to tissue loss and wound size. The reconstructive surgeon plans staged coverage using a dermal regeneration matrix product applied to the wound bed. The billing code Q4394 is used to report application of Surgraft Aca per square centimeter as an add-on to the primary procedural code for wound debridement and graft placement. Typical workflow: preoperative wound assessment and debridement under local or monitored anesthesia care; measurement of wound surface area; preparation of wound bed for grafting; application and securement of the Surgraft product to cover the defect; dressing application and wound care instructions; scheduled follow-up visits for assessment of graft integration and possible secondary coverage with skin autograft if needed. Typical site of service is an ambulatory surgery center or outpatient wound care clinic; inpatient use may occur for complex or large defects.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier | When no additional modifier applies and standard reporting is appropriate |