Summary & Overview
CPT 33620: Bilateral Pulmonary Artery Banding to Reduce Left-to-Right Shunt
CPT code 33620 denotes bilateral pulmonary artery banding, a cardiothoracic surgical procedure that places bands around the right and left pulmonary arteries to reduce left-to-right blood flow and prevent or relieve congestive heart failure and pulmonary hypertension. Nationally, this code is relevant for pediatric and congenital cardiac surgical programs involved in staged repair strategies and for payers managing high-cost inpatient surgical care. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will learn the clinical context for use of CPT code 33620, typical sites of service, and how the procedure fits into staged interventions for congenital heart disease. The publication provides benchmarks and utilization context where available, summarizes payer coverage patterns and common billing practices, and highlights policy and coding considerations relevant to hospital and surgical billing teams. Data not available in the input will be noted where applicable, and clinical context is provided to support accurate coding and claims submission for this inpatient surgical service.
Billing Code Overview
CPT code 33620 describes a surgical procedure in which the provider places a band, typically of umbilical tape, around both the right and left pulmonary arteries to reduce left-to-right shunting. The objective of the procedure is to relieve or prevent congestive heart failure and pulmonary hypertension by constricting pulmonary blood flow. This operation is typically performed as part of staged surgical management for congenital cardiac lesions that produce excessive pulmonary blood flow.
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Service type: Surgical cardiothoracic procedure to reduce pulmonary blood flow
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Typical site of service: Inpatient surgical setting, typically performed in an operating room under cardiothoracic surgical care
Clinical & Coding Specifications
Clinical Context
A typical patient is an infant or young child with a significant congenital cardiac shunt (for example, large ventricular septal defect or patent ductus arteriosus) producing symptomatic left-to-right pulmonary overcirculation, failure to thrive, recurrent respiratory infections, or early signs of pulmonary hypertension and congestive heart failure. The cardiothoracic surgical team evaluates hemodynamics via echocardiography and cardiac catheterization; when definitive repair is deferred or staged, the surgeon performs bilateral pulmonary artery banding to reduce pulmonary blood flow, protect the pulmonary vasculature, and stabilize heart failure. The workflow includes preoperative assessment (imaging, labs, anesthesia evaluation), operative placement of umbilical tape bands around the right and left pulmonary arteries under general anesthesia with median sternotomy or thoracotomy exposure, intraoperative hemodynamic monitoring and adjustment of band tightness, and postoperative intensive care monitoring with serial echocardiography and potential later staged definitive repair.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier — standard reporting | Use when no additional modifier applies and service is billed routinely |
11 |