Cardiac allograft vasculopathy

This code signifies a form of accelerated coronary artery disease that develops in a transplanted heart. It involves diffuse narrowing and hardening of the coronary arteries within the allograft, leading to impaired blood flow and potential graft dysfunction.

Assign this code for patients who have undergone heart transplantation and are diagnosed with cardiac allograft vasculopathy (CAV). This diagnosis is typically made through angiography or other cardiac imaging studies demonstrating the characteristic vascular changes in the transplanted heart.

• Do not confuse this with typical atherosclerosis of native coronary arteries; the "Excludes1" note is crucial here.
• Ensure documentation clearly specifies the vasculopathy is related to the cardiac allograft.
• Consider any associated complications or manifestations of CAV, such as heart failure, and code them additionally.