Coronary artery disease is basically the blockage of the hearts own arteries leading to insufficient supply of blood to heart muscles. Common symptoms are pain on exertion and if neglected can lead to heart attack. To confirm Stress echocardiogram, CT Coronary angiography or Coronary Angiography can be done. Whenever coronary artery bypass surgery(CABG) is needed certainty it is the best option and specially in Diabetic patients with multivessel disease. Coronary artery bypass can be done by a small incision in left side of chest between the ribs.