Payers are rejecting XU modifier claims in 2026 mostly for three reasons: the documentation doesn’t clearly show the service was non-overlapping, the coding team defaulted to modifier 59 instead of the more specific XU modifier, or the code pair carries a Correct Coding Modifier Indicator of “0,” which means no modifier can bypass the edit […]
Why Are Payers Rejecting Your XU Modifier Claims in 2026?









