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 through Social Security, either in person at a local Social Security office, through the Social Security website, or by calling 1-800-772-1213 (TTY users 1-800-325-0778) from 7AM to 7PM, Monday through Friday.