CPT code 47133 represents a donor hepatectomy: the surgical removal of a liver from a cadaver donor with cold preservation for later transplantation. This code documents the donor-side procurement procedure distinct from the recipient transplant operation. Nationally, accurate use of this code is important for organ procurement reporting, transplant program billing integrity, and coordination between donor hospitals and transplant centers. Key payers in a national context include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. This publication provides a concise overview of CPT code 47133, including clinical context, typical sites of service, common billing modifiers, and implications for facility and professional billing. Readers will find benchmarks for payer coverage where available, a summary of billing practice considerations, and a clinical description that clarifies when this code applies versus recipient transplant procedure codes. Data not available in the input is noted where applicable. The goal is to give transplant program administrators, billing professionals, and policy analysts a clear reference for the clinical and billing purpose of CPT code 47133 and where it fits within the organ procurement and transplantation service line.