a few things,
If you get a PM as an interim solution, remember that you will be using that software until every claim has been cleared. There is no transferring of claims from one PM to another. There may be a significant drain on your server and network.
Accounting software is the most difficult software to perfect, as you will lose patients over it if it is not rock solid. Don't expect the first version to be perfect.
Nationally, the average for unpaid claims is 17% as of a few years ago. This is the profit for the insurers. You are supposed to be to busy to fight for the hardest problem claims and be happy with a fraction.
As I grew, the best thing I ever did was hire a young person with the right skill set to be a good assistant to my in-house biller. I also have a program that guides them to the most important claims. You have to have adequate manpower and proper skills to dominate the insurers. They have to chase every claim on the telephone and fix anything necessary to get paid.
If you are getting paid 100% by any insurer, raise your charges!
Percent collections should be your revenue divided by your max allowable, which is different for every claim, over a time period.
While percent collections is nice to think about for comparing efficiency, it is unnecessary for your business. You need to think about your percent collections based on every insurer and for every CPT code to see if you are efficient or need to make changes.
Dan