Athscl other CABG with refractory angina pectoris

This code signifies the presence of atherosclerosis affecting a coronary artery bypass graft (CABG) other than a native coronary artery, specifically when the patient experiences refractory angina pectoris. Refractory angina indicates persistent chest pain despite optimal medical therapy and/or revascularization.

Apply this code when documentation clearly states atherosclerosis within a CABG (e.g., saphenous vein graft, internal mammary artery graft) and the patient's angina is described as refractory. This typically applies to patients with a history of CABG who are now experiencing recurrent, difficult-to-manage angina due to graft disease.

• Ensure documentation explicitly links the atherosclerosis to a bypass graft and specifies refractory angina.
• Do not use for atherosclerosis of native coronary arteries; use appropriate I25.1- codes.
• Sequence this code after the primary diagnosis if the refractory angina is a manifestation of another underlying condition.