Just to bump this up: "According to Harrison's Principles of Internal Medicine (Harrison's Online, Chapter 237, Ischemic Heart Disease, 2008), IHD is a condition in which there is an inadequate supply of blood and oxygen to a portion of the myocardium; it typically occurs when there is an imbalance between myocardial oxygen supply and demand. Therefore, for purposes of this regulation, the term ``IHD'' includes, but is not limited to, acute, subacute, and old myocardial infarction