CPT code 33322 denotes suture repair of the heart’s great vessels performed with cardiopulmonary bypass. This high-acuity cardiothoracic surgery code represents complex operative management of major vascular structures — the aorta, pulmonary arteries and veins, and the vena cava — and is typically billed in inpatient hospital settings. Nationally, procedures captured by this code carry significant resource use, influence cardiac surgical quality metrics, and intersect with payer authorization and bundled payment considerations.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find: an explanation of the clinical service and typical site of care; common modifiers and administrative considerations; payer coverage patterns and billing nuances where available; and related coding context to support accurate claim submission. The summary highlights clinical context for coding decisions and the administrative elements that commonly affect reimbursement and utilization tracking. Data not available in the input are noted where applicable.