Does anyone, in their experience, know how insurers reimburse for procedures with modifiers 59 and 51. I understand that the mod 51, if correctly placed will decrease reimbursement by 50% per line item. Is that correct and who does your "checking"? Now let's say 2 procedures are done-one through the abdomen and one through the vagina. Not bundled(per edits) so no modifier. Should I expect 100% reimbursement per fee schedule for both codes? If you need an example I have 57288 and 58661. I understand the endoscopic family reimbursement with mod 59(so I think). Thanks for any input.