I have an outside biller who has an inbox in AC and is able to access it on a remote server.
Once I sign off on a chart with the CPT and diagnosis codes I forward the chart to her inbox. She is able to complete the claim form and send it electronically from her computer.
This works really well for me.
I personally do not feel the need to add billing softwear as I am still learning with Dragon, Updox and other interfaces.
I really love the AC medical record and notes- it comes as close as can be to the perfect hybrid between an old style chart note and EMR.
The place where I feel AC needs improvement is in the "orders" section. In addition I am not wild about the e-prescribing , especially with respect to renewal requests, formulary lists,etc. Version 6 is better than previous versions, though, so it is livable.