CPT code 33702 denotes surgical closure of a fistula between the sinus of Valsalva and a coronary artery, a rare but clinically significant cardiac repair intended to prevent rupture and downstream ischemic or hemodynamic complications. Nationally, this code represents a specialized cardiothoracic surgical service performed in operating rooms or cardiac surgery suites, typically within inpatient or advanced outpatient surgical settings. Its correct use affects hospital case mix, procedural tracking, and payer reimbursement for high-acuity cardiac interventions.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of clinical context for the procedure, common payer coverage considerations, and benchmarking elements relevant to utilization and billing practice. The publication outlines where CPT code 33702 fits within procedural coding for cardiac surgery, summarizes expected service settings, and flags common modifiers and operational issues for coding teams.

This summary is intended for coding professionals, revenue cycle managers, and clinicians involved in perioperative documentation. It highlights the clinical rationale for the procedure, operational implications for hospitals and surgical centers, and the key areas to review when assigning CPT code 33702.