Athscl bypass of cor art of txplt hrt with refract ang pctrs

This code signifies the presence of atherosclerosis specifically affecting a coronary artery bypass graft (CABG) in a patient who has undergone a heart transplant. The patient is experiencing refractory angina pectoris, meaning their chest pain is persistent and not adequately relieved by standard medical treatment. This indicates a significant and ongoing issue with blood flow to the transplanted heart.

Use this code when documentation clearly states atherosclerosis of a coronary artery bypass graft in a transplanted heart, coupled with refractory angina. This typically applies to patients presenting with worsening or intractable angina despite optimal medical therapy following heart transplantation and CABG. Support for this code includes diagnostic reports confirming graft atherosclerosis (e.g., angiography) and physician notes detailing refractory angina.

• Ensure documentation explicitly states "refractory angina pectoris" and not just general angina.
• Verify the atherosclerosis is in a bypass graft of the coronary artery, not the native coronary arteries of the transplanted heart.
• This code requires a history of both heart transplant and coronary artery bypass grafting.