I have used EzClaim for the past 6 years with their electronic billing package through the Availity clearinghouse. It is relatively inexpensive and works well for me. I am able to submit all of my bills electronically and a majority of paymnents come back electronically and are automatically posted including BC/BS of Illinois, humana, medicare cigna, Aetna and United. They are very helpful. I will however be considering the integrated solutionin Version 7 of AC