Since Tricare is a government policy, they should file Medicare guidelines. I would file an appeal with a print out of the code on Medicare's website showing that the code has a 0 day global and ask them to reconsider. In your appeal letter, I might also put in there why the code should not have a global. For example, patient comes only for injection, usually not much follow up and it doesnt warrant a 90 day global for the procedure. I would also put in the letter that the global is taken in consideration when a code is valued, a code with 0 global is going to have a lower reimbursement than a code with 90 day global.