CPT code 20150 represents surgical excision of an epiphyseal (physis) bar with autogenous fat interposition to address premature growth arrest of long bones caused by trauma, infection, or other injury. This procedure restores potential for longitudinal bone growth in pediatric and adolescent patients and is a specialized orthopedic operation with implications for long-term limb development and function. Nationally, accurate coding of this service is important for procedure tracking, quality measurement, and appropriate payment for a technically demanding reconstructive technique. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, typical sites of service, and the service type associated with 20150. The publication summarizes payer coverage patterns, common modifier usage, and benchmarks where available, and it highlights policy updates and coding guidance relevant to orthopedic surgeons and revenue cycle staff. The content aims to clarify billing terminology, support correct code selection, and provide practical context for claims preparation and compliance at a national level.