Summary & Overview
CPT 33764: Aorto‑Pulmonary Shunt Placement to Improve Pulmonary Blood Flow
CPT code 33764 represents the surgical creation of an aorto‑pulmonary shunt to augment pulmonary blood flow in patients with cyanosis from congenital heart defects. The procedure is a specialty pediatric and adult congenital cardiac surgery performed when pulmonary blood flow is insufficient and interventional or anatomical repair is not immediately feasible. Nationally, this code is relevant for hospital surgical service lines, cardiothoracic surgery programs, and post‑operative critical care pathways.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for the procedure, coding and billing considerations tied to surgical inpatient services, and the types of documentation and service settings that typically support billing for this code. The publication highlights typical sites of service, common clinical indications, and how this procedure fits within congenital cardiac surgical care.
This summary prepares clinical, billing, and administrative audiences to understand where CPT code 33764 is used, what clinical purpose it serves, and which major payers are commonly involved in coverage decisions. Data not available in the input includes payer-specific reimbursement benchmarks, associated taxonomies, and ICD‑10 diagnosis pairings, which are not included here.
Billing Code Overview
CPT code 33764 describes a surgical creation of a shunt between the aorta and the main pulmonary artery to increase pulmonary blood flow and improve systemic oxygenation in patients with cyanosis due to congenital heart defects. The procedure forms a bypass channel that diverts blood between the two vessels to augment pulmonary circulation.
Service Type: Cardiac surgical shunt placement / congenital cardiac surgery
Typical Site of Service: Inpatient operating room or cardiac surgery suite, with postoperative intensive care unit monitoring
Clinical & Coding Specifications
Clinical Context
A full-term infant with cyanotic congenital heart disease (commonly severe tetralogy of Fallot with pulmonary atresia or critical pulmonary stenosis) presents with hypoxemia and poor systemic oxygen saturation despite medical management. The cardiothoracic surgical team evaluates the neonate using echocardiography and cardiac catheterization to confirm reduced pulmonary blood flow and anatomy unsuitable for immediate definitive repair. A systemic-to-pulmonary artery shunt (modified Blalock‑Taussig shunt) is planned to augment pulmonary blood flow and improve oxygenation as a palliative staged procedure. The clinical workflow includes preoperative stabilization in the neonatal intensive care unit, informed consent from guardians, preoperative imaging and labs, induction of general anesthesia in the operating room, surgical creation of the shunt between the aorta and the main pulmonary artery (or pulmonary artery branch), immediate postoperative transfer to the cardiac ICU for hemodynamic monitoring, ventilatory support as needed, and serial assessments for oxygenation and shunt patency. Perioperative documentation includes indication, details of shunt type and site, cardiopulmonary bypass use (if any), intraoperative complications, and postoperative plan for anticoagulation and follow-up imaging.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Default (no modifier) | Use when no special circumstances apply to payment or billing. |