Wiki Two ER visits same day

[aekenyon87]

Patient presented to ER with Epistaxis... CPT 99283-25 and CPT 30903-LT billed for first visit. Patient returned few hours later for same reason and second 99283 billed by same ER provider. The insurance is stating that the second visit paid in error since it is included in global days. From my research, CPT 30903 has no global period. Should the second 99283 also be billed with 25 modifier?

Thanks!