CPT code 33851 represents a cardiac surgical procedure to excise tissue causing aortic narrowing, with optional repair of a patent ductus arteriosus using the left subclavian artery or a prosthesis. This operation is clinically significant because aortic narrowing and associated ductal defects can cause critical cardiac and systemic circulatory compromise; appropriate coding ensures accurate capture of complex surgical care and supports quality reporting and payment processes.

Key payers considered in the national context include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find concise benchmarks and coding context, operational considerations for hospital-based cardiac surgical services, and notes on clinical indications and procedural scope. The publication covers coding nuances for billing and documentation, typical sites of service, and the clinical context that justifies use of this code. Data not provided in the input (such as payer-specific reimbursement rates, taxonomies, and related ICD-10 codes) are noted as unavailable where appropriate.