Pros
The work is very rewarding (when you are left alone to do it). There is something very rewarding about figuring out ways to make insurance companies pay on previously denied claims. Drafting appeals and going through medical records looking for loopholes is always different on each account (never a dull day there). The experience you gain from interacting with various insurance plans, companies and insurances is priceless as it relates to how insurance works and various state and local laws.
Cons
Management and Supervisors can be extremely unprofessional and petty at the smallest offense and there is definitely favoritism for those employees who report on others. The rules are meant for small children, for instance, no talking to coworkers, no eating at your desk (and I mean candy, etc. not full blown meals), HR is never neutral when you are brought in (their decision is already made and its clear they will side with the manager or supervisor), personal time off is given but you are encouraged not to use it ( I was told my pto usage was creating a trend). Your pay is significantly less than other companies pay in the same area and their is NO bonus structure even though your appeals bring in hundreds of thousands of dollars, some co workers are not able to write or articulate clearly in either appeals or in the notation system and often you spend time trying to retrace why claims denied and recalling insurance.