837 files are ANSI EDI HCFA files that are generated by a provider and submitted to a payer organization.
The 837 file is the electronic data interchange (EDI) transmission of claim data from a healthcare provider to an insurance carrier (or clearinghouse).
The OnBase 837 processor can be used to not only import and index data automatically but it can also, separate all EOBs into an individual claim on a per patient basis.