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Claim Rejection status code: Billing Providers National Providers Identifier NPI (A7-21)

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3 comments

  • LaVerne H. Collins

    Yes. I've received something similar as well.  

    ACK,RETURND AS UNPRCESSBLE CLM- CLM,ENCNTER BEEN REJECTD AND NOT ENTERD INTO ADJUDICATION SYS.:ENTITY NOT FOUND.:PROVIDER (A7 - 21)

    I can't tell why.  For me, it seems to only happen with Aetna, but not with ALL Aetna claims.

    Have you gotten any answers from Simple Practice?

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  • Ashley Nelson

    We are also receiving from Aetna, but not ALL Aetna. Any answers yet?

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  • Christina Oxley

    Hoping someone has an answer for this. Same thing is happening to me

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