Summary & Overview

CPT 15274: Skin Substitute Add-On for Trunk, Arms, or Legs

CPT code 15274 identifies an add-on surgical service for application of a skin substitute (such as an allograft or xenograft) to cover an additional wound surface area on the trunk, arms, or legs — up to 100 cm2 in patients aged 10 years and older, or an additional 1 percent of body area in children under 10. The code matters nationally because it reflects incremental resource use and device costs when a wound exceeds the primary coverage area during the same operative session, with implications for facility and professional billing, payer coverage policies, and total episode cost for complex wound care. Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. This publication provides a concise reference for clinicians and billing staff on clinical context and billing intent, and outlines what readers will learn: national coverage and payment benchmarks (where available), common payer policy themes affecting skin substitute add-on reporting, coding and billing considerations tied to same-session wound coverage, and clinical scenarios that commonly trigger use of this add-on code. Data not available in the input will be noted explicitly in relevant sections.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare15274CPTskin substitutewound caresurgical add-ondermatologic surgeryambulatory surgeryinpatient care

Billing Code Overview

CPT code 15274 describes an add-on surgical service using a skin substitute (for example, an allograft or xenograft) to cover an additional wound surface area on the trunk, arms, and/or legs. The code applies when the provider covers up to an additional 100 cm2 in patients aged 10 years or older, or an additional 1 percent of body area for infants and children under 10 years. It is reported as an add-on service performed at the same session the provider covers the initial coverage area (15271 series or other primary skin substitute codes not listed here).

Service type: Surgical add-on for skin substitute application

Typical site of service: Operative suite, ambulatory surgical center, or hospital inpatient setting based on the procedure description and common delivery sites for operative wound management.

Clinical & Coding Specifications

Clinical Context

A 62-year-old male with a chronic non-healing lower extremity wound from peripheral arterial disease and prior debridement presents for placement of a biologic skin substitute. The wound measures 220 cm2 on the anterior lower leg. In the operative session the surgeon prepares the wound bed (sharp debridement, hemostasis), applies the first 100 cm2 of an allograft or xenograft using 15272 (first 100 cm2) and then applies an additional skin substitute to cover the next 100 cm2 using 15274 as an add-on service. The procedure is performed in an outpatient hospital ambulatory surgery center (ASC) under regional or monitored anesthesia care. Typical workflow includes preoperative evaluation and consent, wound measurement and photography, surgical debridement, application and fixation of the skin substitute, dressing application, post-procedure instructions, and scheduling of follow-up wound checks and dressing changes within 48–72 hours.

Coding Specifications

Modifier	Description	When to Use
`59`	Distinct procedural service	When another unrelated procedure was performed in a separate anatomic site or during the same session requiring distinct reporting

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ICD-10 Code	Description	Clinical Relevance
`I83.10`	Varicose veins of unspecified lower extremity with ulcer	Chronic venous ulcers commonly require biologic coverings for large wound areas
`I70.213`	Atherosclerosis of native arteries of extremities with rest pain, right leg	Peripheral arterial disease leads to ischemic ulcers that may need skin substitutes after debridement
`L97.413`	Non-pressure chronic ulcer of right lower leg with fat layer exposed	Typical chronic wound indication for skin substitute application when closing larger surface areas
`L89.313`	Pressure ulcer of sacral region, stage 3	Large pressure ulcers often treated with biologic skin substitutes during surgical management
`E11.621`	Type 2 diabetes mellitus with foot ulcer	Diabetic foot ulcers are frequent indications for advanced wound coverage including allografts/xenografts

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`15272`	Application of a skin substitute graft to trunk, arms, and/or legs wound surface area up to first 100 cm2 in a patient 10 years or older (or up to 1% body area in children under 10)	Often reported as the primary code for the first 100 cm2 covered in the same session to which `15274` is appended for additional 100 cm2 blocks
`11042`	Debridement, subcutaneous tissue (includes 1st 20 sq cm or less)	Commonly performed immediately before skin substitute placement to prepare the wound bed
`11043`	Debridement, muscle and/or fascia (first 20 sq cm or less)	Used when deeper debridement is required prior to graft placement
`97602`	Removal of devitalized tissue from wounds, selective debridement without anesthesia (e.g., sharps)	May be billed for serial sharp debridement in the wound care clinic before definitive graft application
`97597`	Debridement of open wound(s), selective debridement, without anesthesia (first 20 sq cm or less)	Alternative debridement code in outpatient wound care prior to grafting
`99024`	Postoperative follow-up visit, typically included in global period	Postoperative wound checks are part of routine care though often bundled; reported only if payer allows separate billing

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