Wiktionary
n. 1 A bill of health that states that there is no infectious disease present in a ship, or its port of departure. 2 (Figuratively, by extension) A statement that indicates that there are no obvious problems.
WordNet
n. an assurance that someone is healthy or something is in good condition; "the doctor gave him a clean bill of health"
Usage examples of "clean bill of health".
I want to talk to that truck driver, Bob Mims, before we give you a clean bill of health.
Her last physical had given her a clean bill of health, but people dropped dead every day from conditions that hadn't shown up in physical examinations.
But he was determined to pass the test and to get a clean bill of health.
If he pressed, she would snap open her Chanel purse and pull out a clean bill of health from her gynecologist and a package of foil-wrapped party favors.
He hadn't been back all that long, and Bassingford Medical Center had turned him loose with a clean bill of health less than two months ago.
It isn't exactly as if you'd started in with a clean bill of health.
Confronting her was meaningless she'd only say she was going to the bathroom or something like thatand it would be far better to get a clean bill of health than to thwart a search and imply there was something to hide.
Joyce gave me a clean bill of health, then sent me to my cardiologist so he could do the same thing.