CPT code 33977 represents the surgical removal (explantation) of a previously implanted ventricular assist device (VAD) from a single ventricle after the patient stabilizes following initial implantation. This code is used for inpatient surgical reporting and is significant for tracking high-acuity cardiac surgical care, resource utilization, and payment for advanced mechanical circulatory support services nationwide.

Key payers in the national market include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical procedure, typical sites of service, and the implications for hospital billing and surgical service lines. The publication outlines expected reporting contexts, common billing modifiers encountered in practice, and the service line implications for cardiothoracic surgery and advanced heart failure programs.

This overview provides clinical context and billing scope for hospital administrators, coding professionals, and policy analysts seeking clarity on when 33977 applies, how it fits into inpatient surgical workflows, and what to expect in payer interactions and documentation requirements. Data not available in the input is noted where applicable.