Heart disease , describes a range of conditions that affect your heart. Diseases under the heart disease umbrella include blood vessel diseases, such as coronary artery disease; heart rhythm problems (arrhythmias); and heart defects you're born with (congenital heart defects), among others. This is often used interchangeably with the term cardiovascular disease . Cardiovascular disease generally refers to conditions that involve narrowed or blocked blood vessels that can lead to a heart attack, chest pain (angina) or stroke . Other heart conditions, such as those that affect your heart's muscle, valves, or rhythm, also are considered forms of heart disease . Screening blood tests for cholesterol, lipid, and triglyceride levels can detect conditions that may lead to heart disease . Eligibility Medicare Part B covers blood tests for heart disease once every five years when ordered by your provider . You do not need to show signs of heart disease or have a...