What is the diagnosis for coronary artery disease?

Various: If you're asking how CAD is diagnosed, there are actually many ways. Direct testing can show it (ie stress test, calcium scan, catheterization). We also consider the presence of vascular disease elsewhere in the body to be equiv. To having cad. So if someone has blocked circulation in the legs, or a history of certain kinds of stroke, they'd be treated like they have cad. It's a systemic process.

Cholesterol plaque: Build up in coronary arteries.