Summary & Overview
CPT 15101: Split-Thickness Autograft, Additional 100 cm2
CPT code 15101 represents a split‑thickness autograft harvested from the trunk, arms, or legs for each additional 100 cm² (or each additional 1% of body area in infants/children) beyond the primary graft. The code is used to bill incremental graft area when more tissue transfer is required during reconstructive or burn care procedures. Nationally, accurate reporting of this incremental graft code affects case-level surgical documentation, resource accounting, and aggregate utilization metrics for burn and reconstructive surgery.
This analysis covers major commercial and public payers including Aetna, Blue Cross Blue Shield, Cigna Health, United Healthcare, and Medicare. Readers will find a concise explanation of clinical context for incremental split‑thickness autografting, common procedural settings, and how 15101 relates to the primary graft code 15100. The publication summarizes payer coverage patterns and allowed‑service considerations, highlights common modifiers and coding relationships (for reference), and provides benchmark context for utilization and billing of additional graft area. The content is designed for hospital coding teams, surgical services, and payer relations staff seeking a national‑level briefing on reporting and clinical context for incremental split‑thickness autografts.
Billing Code Overview
CPT code 15101 describes a split‑thickness skin autograft harvested from the trunk, arms, or legs and placed for each additional 100 cm² (or each additional 1% body area for an infant or child) beyond the primary graft quantity. This code is intended to be reported in addition to the primary split‑thickness autograft code for extra graft surface area.
Service type: Skin grafting / surgical autograft procedure
Typical site of service: Operating room or procedural suite in an inpatient or outpatient surgical setting
Clinical & Coding Specifications
Clinical Context
A 7-year-old child presents to the regional burn center after a house fire with deep third-degree burns involving the head/face/neck, anterior chest wall, right upper extremity including the right hand, and right lower extremity. After initial resuscitation, wound debridement and assessment in the operating room, the burn surgery team performs a split-thickness skin autograft harvest from the thigh to cover areas of excised full‑thickness burn. The primary graft procedure is reported with 15100 for the first 100 cm2 (or first 1% BSA for a pediatric patient). The surgeon documents additional graft harvested and placed beyond the initial 100 cm2 (or additional 1% BSA), and reports each additional unit with 15101 as an add‑on code. Typical workflow includes preoperative assessment in the emergency/burn unit, operating room harvest and graft placement by a plastic or burn surgeon, intraoperative photography and measurement of graft surface area, postoperative wound checks in the pediatric inpatient unit or intensive care unit as needed, and scheduled outpatient follow‑up for graft take and rehabilitation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
59 | Distinct procedural service | When a separate/anatomic graft or separate operative session qualifies as distinct from other billed procedures during the same encounter |