I have done med/surg, per diem, travelling, and critical care. I have always been allowed to hang a new bag if epidural solution and change the tubing; in fact, I can't imagine a residents or attendings face were I to call them to do it.
I have seen policies that prohibit RNs from giving a bolus off the pump, even with the surgeon's or anesthesia pain service's orders. Where I work now (ICU) we open the epidural system and give push fentanyl/ dilaudid/whatever with a preservative-free saline chaser for breakthrough pain. Getting APS onto the floor to program a bolus into the pump is ridiculous but I don't like opening the system for prn's either.
Every hospital/homecare system has it's own "right way" of doing things, but not being able to hang a bag is pretty restrictive. Any idea what is behind those rules? Have they had sterility or air bolus problems?