Summary & Overview
HCPCS Level II Q4195: Puraply, per square centimeter (add-on)
HCPCS Level II code Q4195 denotes Puraply billed per square centimeter as an add-on product used in wound care or surgical repair. Nationally, codes for biologic and skin substitute products are important because they affect facility and professional billing for procedures that require additional dressing or graft materials. This add-on code captures incremental supply costs tied to product area rather than a bundled procedure fee.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical role, common sites of service, and how it is reported as an add-on to primary procedures. The publication outlines typical billing considerations, common modifiers in use, and where the code fits within service lines for wound care and outpatient surgical services.
The report provides benchmarks and policy context to help billing and coding staff interpret payer coverage patterns and documentation expectations. It also summarizes clinical context for use of a per-square-centimeter biologic product and identifies areas where further payer-specific guidance may be required. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code Q4195 describes Puraply, per square centimeter as an add-on product billed separately in addition to a primary procedure. The code represents a medical wound or surgical site product supplied and charged based on area (per square centimeter).
Service type: Wound care product / biologic skin substitute
Typical site of service: Outpatient surgical settings, hospital outpatient departments, and wound care clinics
Clinical & Coding Specifications
Clinical Context
A typical patient is a middle-aged adult with a chronic, non-healing full-thickness or partial-thickness wound (for example, a diabetic foot ulcer, venous stasis ulcer, or traumatic wound) requiring advanced biologic wound matrix application. The procedure is performed in an outpatient wound care clinic, ambulatory surgery center, or hospital outpatient department. The clinician debrides the wound, measures the wound area, prepares the wound bed for grafting, and applies Q4195 (Puraply) in square centimeters as an add-on to a primary wound repair or grafting procedure. The clinical workflow includes pre-procedure assessment (wound culture, vascular assessment, glycemic control review), informed consent, operative debridement, application of the Puraply matrix sized to the wound surface, securement of the product, dressing application, and scheduled follow-up visits for dressing changes and assessment of graft take and wound healing.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Standard; no modifier | Use when no special circumstances apply and billed as usual. |
11 | Primary procedure |