Coronary heart disease is caused by the buildup of plaque in the arteries to your heart. This may also be called hardening of the arteries. 1  Fatty material and other substances form a plaque build-up on the walls of your coronary arteries. 2  The coronary arteries bring blood and oxygen to your heart.
Medicare is a Federal health insurance program for people 65 years of age or older, under 65 with certain disabilities, and any age with end-stage renal disease (permanent kidney failure requiring dialysis or a kidney transplant).
You can apply for Medicare Part A and/or Part B through Social Security (if you worked for a railroad, you need to apply through the Railroad Retirement Board). The start of your coverage will depend on which month you sign up during your IEP, and you should receive your Medicare card within 30 days of being approved.