Can someone please help me understand and resolve this one?
CO-16: Claim/service lacks information which is needed for adjudication. Additional information is supplied using remittance advice remark codes whenever appropriate. This change to be effective 4/1/2007: At least one Remark Code must be provided
MA04: Secondary payment cannot be considered without the identity of or payment information from the primary payer. The information was either not reported or was illegible.
TIA