Claims Processing Error Codes

AK5-A means the X12 997 Transaction Set Response indicates the transaction set was accepted.

AK5-E means the X12 997 Transaction Set Response accepted the transaction set but noted syntax errors.

AK5-M means the 997 transaction set was rejected because the message authentication code (MAC) failed.

AK5-R means the X12 997 Transaction Set Response rejected the transaction set due to syntax errors.

AK5-W means the 997 transaction set was rejected because assurance failed validity tests.

AK5-X means the 997 transaction set was rejected because content after decryption could not be analyzed.

AK9-A means the X12 functional group was accepted in the AK9 segment of a 997/999-style response.

AK9-E means the functional group was accepted, but errors were noted during syntax editing (AK9 segment).

AK9-M means the functional group was rejected because the message authentication code (MAC) failed.

AK9-P means the functional group was partially accepted and at least one transaction set was rejected.

AK9-R means the X12 functional group (GS/GE) was rejected due to syntax errors.

AK9-W means the functional group was rejected because assurance failed validity tests.

AK9-X means the functional group was rejected because content after decryption could not be analyzed.

IK5-A means the X12 999 Implementation Acknowledgment accepted the transaction set.

IK5-E means the X12 999 accepted the transaction set but reported implementation errors.

IK5-R means the X12 999 Implementation Acknowledgment rejected the transaction set due to implementation/syntax errors.

CP-30 indicates “Unknown Error” in claims processing workflows.

CP-29 indicates “Claim Rejected” in claims processing workflows.