A TRICARE explanation of benefits (EOB) is not a bill. It is an itemized statement that shows what action TRICARE has taken on your claims. An EOB is for your information and files.  A sample of an EOB and instructions on how to read an EOB can be seen in the Prime Handbook.  After reviewing the EOB, you have the right to appeal certain decisions regarding your claims. You can file an appeal in writing within 90 days of the date of the EOB notice. You should keep EOBs with your health insurance records for reference.  View and print your EOB at myTRICARE.com.