That makes sense and would have been quite important with the early medical gear, but now virtually all medical equipment has battery backup. In fact the IV pump I was hooked up to had battery backup, and I was after the first day of bed rest encouraged to get up and walk around as much as possible. I would chase the nurses around, and go the the main nurse's desk to look at my heart rate telemetry.
Interesting that the Code appears to be silent on this in a way (since the idea of if a bathroom is part of the patient room can be subject to interpretation) and that it is a job spec instead.
For what it's worth, I am not sure how old the hospital I was in is, but is is not "new", if I had to guess it was built in the early 80's or maybe before...