RFI # 2820 UB-04 and Loop 2300, HI - Patient Reason for Visit - If Desired (837I) Description The original X12 standards document indicates that the REASON FOR VISIT is “Required when claim involves outpatient visits. If not required by this implementation guide, do not send.” Then, in RFI #1256 , you clarified that the field is only required on “certain outpatient claims as directed by the NUBC billing manual.” The description is: “Required only on 013x, 078x and 085x claims when: a) Priority (Type) of Admission or Visit codes 1, 2 or 5 are reported (FL 14). AND b) Revenue Codes 045x, 0516, 0