CPT code 33422 denotes an open mitral valve repair procedure performed under cardiopulmonary bypass to release a narrowed or stiff mitral valve. This code captures resource-intensive cardiac surgery with significant implications for inpatient surgical capacity, perioperative care pathways, and national procedural volume and cost monitoring.

Key payers considered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of clinical context and typical care setting, plus an outline of benchmarking and policy-relevant topics frequently associated with this service: payer coverage patterns, coding and billing considerations, utilization benchmarks, and implications for hospital surgical resource planning.

The content that follows provides clinical context for 33422, identifies where the procedure is typically performed, and summarizes the elements stakeholders monitor when evaluating access, utilization, and reimbursement for open mitral valve release under cardiopulmonary bypass. Data not available in the input will be noted as such in relevant sections.