CPT code 33315 represents an open cardiac surgical procedure to incise the heart and remove an intracardiac foreign body or clot while the patient is supported on cardiopulmonary bypass. This code captures a high-acuity, operative service performed in the inpatient operating room by a cardiothoracic surgical team and has implications for resource utilization, perioperative risk management, and hospital billing for complex cardiac surgery. Nationally, accurate use of this CPT code matters for procedure tracking, quality measurement, and alignment of reimbursement with clinical complexity.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find benchmarks and contextual information on coding and billing for this type of cardiac surgical service, clinical context that clarifies when the procedure is indicated, and policy-relevant considerations that can affect acceptance and claims adjudication. The content summarizes typical site-of-service expectations, the nature of the operative service, and the kinds of procedural documentation and coding clarity that support correct claim submission. Data not available in the input is noted where applicable.