I keep getting CO-4 denials when a code is billed to MCR/MCR Advantage with modifier -GZ. From what I've seen, all CPT codes billed to MCR/MCR Advantage with -GZ are being denied as missing a modifier or that the wrong modifier was used. In reality they should be denied as not medically necessary, correct? (the client does put the charges under Non-Covered on a UB)
If anyone has insight on this issue, please let me know. Thanks!
If anyone has insight on this issue, please let me know. Thanks!