| Term | Definition |
| Ischemic heart disease: (3) | arteriosclerotic heart disease, coronary ischemia, coronary artery disease |
| aborted myocardial infarction | 411.1 Intermediate coronary syndrome (no damage) |
| STEMI NSTEMI | ST elevation 410 |
| AMI 410 acute myocardial infarction | diagnosed often by lab tests of serum markers |
| Newer AMI serum markers: | troponin T and I, myoglobin, and CK-MB |
| 412 | Old myocardial Infarction, healed MI |
| Unstable angina 411.1 | crescendo or preinfarction angina (discomfort) |
| Angina Pectoris 413 | Chest pain due to ischemia (loss of blood) to the heart |
| Principal Diagnosis | condition established after study occasioning hospital visit |
| 414 Chronic ischemic heart disease | arteriosclerotic heart disease |
| atherosclerosis | lesions on the inside of arterial walls, major cause of stroke, con. heart failure, MI, kidney failure angina pectoris |
| 5th digit of 414 | vessel specific: artery, graft, etc |