My group has received a denial because we billed for outpatient dialysis (G0317- ESRD related services with 4 or more visits per month) on a patient that was also seen by another physician group. I am unsure how the other group billed but I feel that since our physician did see the patient we should be able to be reimbursed. Has anyone experienced this and if so do you know how we can bill for these services? I'm told there is a way to do it.