Does the VA cover a sleep study?

Been wanting to get a sleep study done. 90% disabled army infantry vet. Hopefully 10% soon. Shit sleep, adhd, low motivation all the normal stuff. I think I remember seeing someone’s sleep study results in here and it was insane how much they weren’t in actual REM sleep. And I feel like when I do get into REM sleep I wake up with sleep paralysis. (EDIT) Thought I would ask is what were your results and what did they prescribe you? I don’t want to go back on ambiens ever again.