Hi Dutch,
I’m sorry to hear about your partner’s condition and I can only imagine all the many difficult issues that you are dealing with. My thoughts are with you.
For the sake of others that are reading this that are facing similar circumstances I’m guessing that one of the two posts you are referring to is this one in 2014 but I’m not sure which is the second one in 2015 that you referred to.
The specifics of different health care plans are outside the scope of my research and knowledge so my best suggestion would be to talk with your doctor or other health care specialist and with your health insurance provider who would be much more knowledgeable than I am about the specifics of what could be covered and what couldn’t.
It would seem somewhat likely to me that the adjustable bed would be covered if sleeping reclined helps her and your doctor will prescribe it but I don’t know if a specific mattress would be covered.
Phoenix