@gray_witch @parismarx From the fine article:

"His family appealed the denial, twice, overturning it on the second appeal after NaviHealth doctors reviewed Tetzloff's medical records. But, after 40 days at the skilled nursing home, UnitedHealth denied coverage again and refused to provide a reason. The family continued trying to appeal the denial, but were unsuccessful."

So you can ask for whatever documentation you want, but that doesn't mean that you will get it.