I too work in a community acute hospital. We do everything in the RN CM spectrum (all kinds of UM, DC planning, coordination with the community network...), that makes my job "interesting," or I may just say "crazy" sometimes. I once hear an analogy about CM, and I think it really comes to life: "CM is like juggling a dozen of glass & rubber balls, your job is to figure out which ball is OK to drop and which ball cannot afford to be dropped, for now." That is exactly my kind of work life (plus the insufficient funds that leads to having insufficient staff, which leads to large caseload in an relatively inefficient environment, which makes the frustrating part of work). I think as a hospital, we have some room to improve... I like the concept of doing full spectrum CM though, I think it's a good training ground for me to go anywhere later if I want to.
Anyway, like the comment from MBARNBSN, I know people who work per diem in 2 jobs, work a CM job while doing a bedside nursing job, or just work part-time and have your own business (maybe be a consultant?). I think it'd be interesting for you to work "the other side" - review denials in hospital. Or maybe go into QI to improve documentation.