Attrition is a common problem across the industries and there could be company specific reasons and need not be specific to the industry that deals with "Revenue Cycle Management." Earlier, I have given exhaustive reply about attrition analysis. Check the following link to refer it:
I recommend you doing analysis of the attrition and preparing action plan. Upload the action plan on this forum and some senior like me could suggest corrections.
8th December 2016 From India, Bangalore