It just keeps climbing even as I close hospitals, I close some and get a few game days with savings then it climbs again. I have corporations that produce "medical materials" and "medical supplies" in my empire, they have been in shortages for a long time but these growing costs continue.
Its the worst in my main nation "The Kingdom of Hodg" on White Giant.
Also what items go into hospitals, is it just Medical Materials and Medical supplies or are there other inputs?