Summary & Overview
HCPCS Q4320: Pellograft Per Square Centimeter, Surgical Graft Supply
HCPCS Level II code Q4320 denotes Pellograft billed per square centimeter as an add-on supply used in surgical procedures. The code is used when a graft material is applied in addition to a primary procedure and is typically reported by surgical facilities and providers in the operating room or ambulatory surgical center. This designation matters nationally because it affects facility and professional billing for graft materials, informs cost accounting for complex reconstructive procedures, and factors into payer coverage and bundling decisions.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code's clinical usage and billing context, expectations for typical sites of service, and common modifier practices (listed separately). The summary highlights what stakeholders can expect regarding claims handling and reimbursement considerations tied to add-on supply reporting. For elements not provided in the source input—such as associated taxonomies, ICD-10 diagnoses, and related codes—the publication notes that detailed mappings are not available in the input. This piece provides the clinical and billing overview that payers, providers, and revenue cycle teams require to classify and process claims involving Q4320 effectively.
Billing Code Overview
HCPCS Level II code Q4320 represents Pellograft billed per square centimeter as an add-on, list separately in addition to primary procedure. This code describes a graft material charged by area used to augment or repair tissue defects during a primary surgical procedure.
Service type: Grafting material supply / surgical adjunct
Typical site of service: Operating room or ambulatory surgical center, billed in conjunction with the primary surgical procedure when graft material is applied.
Clinical & Coding Specifications
Clinical Context
A 58-year-old male with a chronic full-thickness lower extremity wound after trauma presents to a multidisciplinary wound care clinic. Conservative measures and standard grafting attempts have failed to achieve durable closure. The surgical team plans placement of a pellograft (dermal regenerative matrix) to support re-epithelialization and provide scaffold for tissue ingrowth. The procedure is performed in an outpatient ambulatory surgical center under regional or general anesthesia. The operative workflow includes debridement of nonviable tissue, measurement of the defect in square centimeters, preparation of the wound bed, application and fixation of the pellograft sized to the measured area, and standard dressing application. Post-procedure care includes short observation for anesthesia recovery, wound care instructions, scheduled clinic follow-ups for dressing changes, and evaluation for adjunctive therapies such as negative pressure wound therapy or additional grafting if needed.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No Modifier | Use when no specific modifier applies to the service. |
22 | Increased Procedural Services |