katy wrote:

Medical billing is standardized in the US. Claims are submitted on
a UB-92
http://www.cigna.com/health/provider...forms/UB92.pdf
and coding is done with the ICD-9 code book. The only thing that is
different between submissions is the address on the envelope.

Still you have to keep track of many accounts with diferent providers.

Cheers
Marty