Our surgeon performed 2 unrelated, major surgeries on the same Medicare patient on the same day. We coded the second surgery using modifier 79. Medicare reimbursed for both surgeries, but reduced our reimbursement for the second one (modifier 79) by 50%. Is this correct? I cannot find anything on the Medicare Intermediary's website which addresses a reduction in the reimbursement. It's not really a multiple procedure (modifier 51), is it?