Insurance companies don't view ostomy supplies as necessary for life. about 8 years ago some insurance companies began eliminating or reducing coverage to these supplies and I suspect more will follow suit. When I had a temp ostomy my insurance company covered about 60--80% as I recall and that was about 7 years ago.
It doesn't seem fair since they seem to have no problem handing viagra out to any man who asks for it but deny women birth control pills? Don't get me started.
This is a major reason why people want national health care.
Health insurance companies only want people who are well and don't need medical care.
If you've got a cold and sniffles, they'll bend over backwards for ways to deny paying any claims.
(getting off the soapbox)