CPT code 33944 captures the surgical preparation of a donor heart received in cold preservation for transplantation. This code documents intraoperative work by the transplant surgeon to inspect the donated organ, repair or suture donor vessels, remove blood clots, and excise portions of the pulmonary artery and aorta as needed prior to implantation. Nationally, accurate use of this code is important for documenting transplant operative complexity, supporting quality reporting, and ensuring consistent clinical records across transplant centers.

Key payers considered include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context for 33944, typical sites of service, and the procedural elements that distinguish this donor-organ preparation service from other transplant-related codes. The publication also summarizes common billing modifiers associated with transplant surgery and identifies areas where policy updates or payer-specific coverage rules commonly affect claims processing. Clinicians and billing professionals will gain clarity on when to use CPT code 33944, what documentation supports its use, and where to look for payer-specific guidance. Data not available in the input is noted where applicable.