What is the origin of the idiom "clean bill of health" and when to use it?

The idiom "clean bill of health" has its origin in the 17th century, when sailors were required to produce a document called a "bill of health" before entering a port. Over time, the phrase came to be used in contexts, such as in business, finance, or sports, to indicate that something has been found to be in good condition or free from any problems or issues.