What Exactly Does a Case Manager Do?

I can't speak for all hospices, but at ours Case Managers do everything from admissions to ordering diapers. This is by no means all of it, but some of the things I am expected to do are:

admissions
deaths/discharges
assessment
treatments
obtaining orders
ordering meds
ordering supplies
ordering DME
consulting with MSW/office/MD/chaplains/facility staff
educating families
IDT meetings
evaluating CNAs

pretty much, we're responsible for every aspect of the patient's care and coordinate the other disciplines. Nothing is done that isn't set into motion by the case manager.