Summary & Overview
CPT 33724: Repair of Partial Anomalous Pulmonary Venous Return
Headline: CPT code 33724: Surgical repair of isolated partial anomalous pulmonary venous return
Lead: CPT code 33724 represents open surgical repair of isolated partial anomalous pulmonary venous return (PAPVC), a congenital cardiac anomaly in which pulmonary venous blood drains abnormally to the right atrium or systemic veins. This procedure is a key corrective operation in congenital heart surgery and affects clinical pathways, resource use, and payment for complex inpatient cardiac care.
CPT code 33724 matters nationally because PAPVC repair is a high-acuity, resource-intensive surgical intervention performed in specialized centers. Coverage, payment, and coding consistency for this code influence hospital reimbursement, quality measurement, and care coordination for pediatric and adult congenital heart patients.
Key payers covered: Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
What readers will learn: This publication provides clinical context for CPT code 33724, summarizes typical settings and service type, outlines common billing considerations and modifiers used with complex cardiac surgery, and highlights benchmarking and policy topics relevant to national payers. The content equips coding, revenue-cycle, and clinical teams with concise guidance on where CPT code 33724 fits within surgical service lines and inpatient care pathways.
Billing Code Overview
CPT code 33724 describes a surgical procedure in which the provider incises the chest wall and repairs an isolated partial anomalous pulmonary venous return (PAPVC). This congenital cardiac repair redirects one or more pulmonary veins that erroneously drain oxygenated blood into the right atrium or systemic venous circulation back to the left atrium.
Service Type: Congenital cardiac surgical repair
Typical Site of Service: Inpatient hospital operating room / cardiac surgery center
Clinical & Coding Specifications
Clinical Context
A typical patient is a pediatric or young adult presenting with exertional dyspnea, recurrent respiratory infections, or a heart murmur found on exam. Diagnostic workup includes echocardiography (transthoracic or transesophageal) and cardiac CT or MRI demonstrating an isolated partial anomalous pulmonary venous connection (PAPVC) with one or more pulmonary veins draining to the right atrium or systemic venous circulation rather than the left atrium. Cardiac catheterization may be performed preoperatively to assess hemodynamics and pulmonary vascular resistance.
The clinical workflow includes preoperative evaluation by pediatric or adult congenital cardiology, informed consent, anesthesia assessment, and perioperative planning for median sternotomy or thoracotomy. In the operating room, the cardiothoracic surgeon performs the chest wall incision, isolates the anomalous pulmonary venous return, and repairs the defect to redirect pulmonary venous flow to the left atrium, often using intracardiac baffling or direct reimplantation. Postoperative care takes place in a cardiac intensive care unit with hemodynamic monitoring, ventilatory support as needed, and follow-up imaging to confirm unobstructed pulmonary venous flow and cardiac function.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier / standard reporting | Use when no modifier applies and the service is reported under usual circumstances |