Segment: REF
Loop: 2330D Segment: REF
Element: REF01 (Other Payer Rendering Provider Secondary Identification Reference ID Qualifier)
Allows 'OB', '1G', and 'G2'. Allows up to all 3.
Element: REF02 (Other Payer Rendering Provider Secondary Identification Reference ID)
Allows 'OB', '1G', and 'G2'. Allows up to all 3.