Summary & Overview
HCPCS Q4183: Surgigraft, per square centimeter (add-on)
HCPCS Level II code Q4183 designates Surgigraft, billed per square centimeter, as an add-on supply code reported in addition to a primary surgical procedure. This code captures the use of graft material measured by surface area during operative care and is used to itemize additional supply costs associated with surgical grafting. Proper reporting of add-on supply codes like Q4183 supports clinical documentation, claims accuracy, and consistent national billing practices.
Key payers in the national landscape include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of where Q4183 fits into surgical supply billing, typical sites of service, and common billing contexts. The publication covers billing benchmarks and coding policy considerations relevant to add-on graft supplies, contract and payer coverage nuances, and clinical scenarios where per-square-centimeter graft reporting is applicable.
This summary equips coders, billing managers, and policy analysts with concise context on clinical use and billing implications for HCPCS Level II code Q4183, and guides readers to detailed sections on documentation expectations, payor-specific considerations, and claim submission best practices.
Billing Code Overview
HCPCS Level II code Q4183 describes Surgigraft billed per square centimeter as an add-on supply reported in addition to a primary procedure. The code represents a graft material supplied and measured by surface area for use during surgical procedures.
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Service type: Surgical graft supply
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Typical site of service: Operating room or other procedural/surgical setting
Clinical & Coding Specifications
Clinical Context
A 62-year-old male with a chronic non-healing full-thickness skin defect of the lower leg following trauma and multiple debridements presents for operative reconstruction. The surgical team plans excision of devitalized tissue, preparation of a clean granulating wound bed, and application of biologic surgical graft material billed as an add-on by square centimeter to augment wound closure and promote tissue regeneration. Typical workflow includes preoperative evaluation and wound measurement, intraoperative debridement and hemostasis, measurement of the defect in square centimeters for accurate billing of Q4183, placement and fixation of the surgigraft material to the prepared wound bed, and postoperative dressing and monitoring. Usual site of service is an operating room or ambulatory surgery center; the procedure is performed by a surgeon or surgical team that may include plastic surgery, general surgery, or wound care specialists.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | When work required is substantially greater than typically required for the primary procedure (document rationale and use with primary CPT) |
23 |