Billing and Coding: Skin Substitutes Grafts/Cellular and Tissue-Based Products for the Treatment of Diabetic Foot Ulcers and Venous Leg Ulcers

Covers billing/coding for skin substitute grafts/CTPs (non‑autologous human, xenograft, cellular/acellular sheet scaffolds) used to treat diabetic foot and venous leg ulcers and excludes non‑graft wound dressings and injected skin substitutes from graft application codes (those products are bundled and not separately payable). Follow LCD L39756 for medical‑necessity requirements and use the appropriate modifier (GA/GX/GY/GZ) per Part A/B and ABN/waiver rules when billing non‑covered services; do not report non‑graft dressing or injected substitute HCPCS codes with graft/CTP application codes.