Some health insurance companies cover interesting things, like prescription contraceptives. Sometimes plastic surgery to correct asymmetrical breasts, droopy eyelids and deformed ears is also covered. That all makes perfect sense. Birth control is a necessity for nymphomaniacs, unless they want to be in a constant state of pregnancy. And plastic surgery is a necessity for people with funky looking boobs. Don't even get me started on people with deformed ears—they should have their own schools.
One thing health insurance won't cover: the shoe lift I wear because my femur migrated up due to a lack of hip bone. Insurance would cover the lift if it fit inside the shoe, but not mended to the sole. That was fine when I had a quarter inch insert, but now my lift is one and three quarter inches. That wouldn't even fit inside Shaq's size 23s.
That's okay. It's not like walking is a necessity.