Athscl native cor art of txplt heart w unstable angina

This code signifies the presence of atherosclerosis affecting the original coronary arteries within a heart that has been surgically transplanted into a recipient. The patient is also experiencing unstable angina, indicating a severe and worsening form of chest pain due to myocardial ischemia. This condition represents a significant complication in post-transplant patients.

Apply this code when documentation clearly indicates a patient with a history of heart transplantation who has developed atherosclerotic disease in their native coronary arteries, accompanied by unstable angina. Supporting documentation should include physician notes detailing the transplant history, diagnostic findings confirming atherosclerosis (e.g., angiography), and symptoms consistent with unstable angina.

• Ensure documentation specifies "native coronary artery" to differentiate from transplant coronary artery disease.
• Confirm the presence of unstable angina; if stable angina is documented, a different subcategory would be appropriate.
• Always sequence this code first if it is the primary reason for the encounter, followed by any associated conditions.