An explanation of benefits (commonly referred to as an EOB form) is a statement sent by a health insurance company to covered individuals explaining what medical treatments and/or services were paid for on their behalf.
[1] The EOB is commonly attached to a check or statement of electronic payment.
Electronic EOB documents are called edi 835 5010 files.
[2] There will normally also be at least a brief explanation of any claims that were denied, along with a point to start an appeal.
Generally, secondary insurance pays only the amount the EOB says the member is responsible for.