Hi y'all! Help me with something please! I have a physician that is not credentialed to performed the FFR study therefore one of her partners does this for her during the cath procedure. She will be the cath code while he will bill the FFR. With the FFR being an add on code it, of course, is being denied! Is there a way to modify this code in order for her partner to be reimbursed for his services? Any advice would be beneficial!! Thank you!