Summary & Overview
CPT 36450: Neonatal Exchange Transfusion via Umbilical Vessel
CPT code 36450 represents an exchange transfusion performed on newborns, typically via an umbilical blood vessel, to remove bilirubin-laden blood and replace it with donor blood or plasma. The procedure is a high-acuity neonatal intervention used to treat severe hyperbilirubinemia and prevent bilirubin-induced neurologic dysfunction. Nationally, exchange transfusion is a critical but infrequently used life-saving therapy that has implications for neonatal clinical protocols, blood-bank coordination, and inpatient reimbursement.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, comparisons of coverage patterns across major national payers, and benchmarks related to site-of-service and utilization where available. The publication also outlines coding considerations specific to CPT code 36450, common modifiers applicable to transfusion and procedural billing, and typical billing practice for inpatient neonatal care.
This resource is intended for hospital administrators, neonatal clinicians, revenue-cycle staff, and policy analysts who need a clear, national-level summary of the clinical purpose of CPT code 36450, payer coverage landscape, and the operational factors that influence use and billing of exchange transfusion in newborns.
Billing Code Overview
CPT code 36450 describes an exchange transfusion procedure in which a provider slowly removes a specific amount of blood from an umbilical blood vessel of a newborn while simultaneously infusing an equal amount of donor blood or plasma. This procedure is typically performed to treat severe neonatal jaundice by reducing circulating bilirubin levels.
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Service type: Invasive therapeutic transfusion procedure for neonates
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Typical site of service: Neonatal intensive care unit (NICU) or other inpatient neonatal care setting
Clinical & Coding Specifications
Clinical Context
A term or late-preterm newborn with severe hyperbilirubinemia due to hemolytic disease of the newborn or isoimmune hemolysis is admitted to the neonatal intensive care unit. The care team includes a neonatologist, neonatal nurse, and transfusion service. After serial bilirubin measurements and assessment of risk factors (rate of rise, age in hours, clinical symptoms, and direct antiglobulin test results), exchange transfusion is indicated because phototherapy and adjunctive therapies are insufficient to lower bilirubin to a safe level. The procedure is performed at the newborn's bedside in the NICU or in an operating room when transport or sterility concerns exist.
The neonatologist obtains parental consent, confirms compatible, crossmatched donor blood (usually reconstituted packed red blood cells and plasma), assembles equipment (umbilical catheterization kit, infusion and withdrawal syringes or automated exchange device, warming devices, monitoring), and coordinates with blood bank for volume and irradiation/CMV-negative requirements. The umbilical venous or arterial catheter is placed, baseline vitals and labs (serum bilirubin, blood glucose, calcium, blood gases) are obtained, and continuous cardiorespiratory and temperature monitoring is used during the procedure. Blood is slowly withdrawn from the umbilical vessel while equal volume of donor blood or plasma is infused until the target exchange volume (commonly double-volume exchange) is achieved. Post-procedure labs confirm reduction in total serum bilirubin and monitor for complications (electrolyte shifts, thrombocytopenia, infection) and the infant is observed in the NICU for stabilization.
Coding Specifications
| Modifier | Description | When to Use |
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