Summary & Overview
HCPCS Level II Q4370: Aeroguard per Square Centimeter
HCPCS Level II code Q4370 denotes Aeroguard billed per square centimeter as an add-on supply to a primary procedure. Nationally, add-on supply codes like Q4370 matter because they capture incremental material costs that are separate from procedure fees and can affect facility and professional payment calculations. This code is relevant across outpatient procedural settings where topical barriers or protective dressings are applied.
Key payers covered in this publication include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will find a concise briefing on what the code represents, typical sites of service, and the clinical context for using an Aeroguard barrier during procedures. The publication summarizes common billing modifiers and notes when separate listing is appropriate. It also outlines benchmarking categories and explains where data was available versus where the input did not include information.
The guide is intended for billing managers, revenue cycle staff, and clinicians who need a clear, national-level reference for coding and documentation related to add-on supply billing. Data not available in the input.
Billing Code Overview
HCPCS Level II code Q4370 describes Aeroguard, per square centimeter and is designated as an add-on supply billed separately in addition to a primary procedure. The service type is medical supply – wound/skin protection barrier used to protect tissue at the application site. Typical site of service is outpatient clinic, ambulatory surgery center, or other procedural settings where a primary procedure generates a separate supply need.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult undergoing a surgical or wound-care procedure where an antimicrobial or barrier dressing product sold under the trade name Aeroguard is applied to a post-surgical wound or chronic ulcer surface. The product is billed per square centimeter using Q4370 as an add-on supply code in addition to the primary procedure charge. Clinical workflow: the patient receives primary surgical or debridement procedure in an outpatient surgical center, hospital outpatient department, or wound clinic. After hemostasis and wound preparation, the clinician measures the wound surface area, selects the appropriately sized Aeroguard dressing, and documents the square centimeters applied. The dressing is applied to provide a protective, antimicrobial barrier and secured per facility protocol. Documentation includes the primary procedure code(s), the applied product name and size in cm2, indication for use (e.g., post-op incision protection, diabetic foot ulcer, pressure ulcer), wound measurements, and any relevant clinical findings. Typical sites of service are outpatient surgical centers, hospital outpatient departments, physician office-based procedure rooms, and wound care clinics. Common clinical scenarios include post-operative incision management after minor dermatologic or general surgical procedures, coverage of chronic ulcers following debridement, and protection of graft or donor sites.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier information |