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CO-16 Remark MA04

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TXBiller:
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

Michele:
They are asking for the primary carrier EOB.  Medicare (or the payer being billed) is apparently secondary.

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