OA-251: Incomplete or Deficient Attachment/Documentation Received

What Does OA-251 Mean?

When paired with Group Code OA, the incomplete documentation typically involves a secondary payer needing more complete information for coordination of benefits adjudication.

CARC 251 means the payer received the correct type of document with your claim, but the document is incomplete, deficient, or unusable. Unlike CARC 250 (wrong document entirely), the issue with CARC 251 is that the right document was sent but it lacks necessary content.

Common deficiencies include missing pages from medical records, absent physician signatures, incomplete operative notes, illegible scanned documents, partial records that omit required sections, and documents missing mandatory dates or required fields. The payer cannot process the claim because the submitted documentation does not contain enough information to make a coverage or payment determination.

The accompanying RARC codes identify what specific information is still needed. Addressing the deficiency and resubmitting is typically faster than filing an appeal.

Common Causes

How to Resolve

1. Identify what the secondary payer needs Determine what specific information is still needed for the secondary payer to process the claim.
2. Submit complete documentation and resubmit Send the full documentation to the secondary payer with the corrected claim.

How to Prevent OA-251

• Apply the same documentation quality standards for claims submitted to all payers

General Prevention

• Apply the same documentation quality standards for claims to all payers

Also Filed As

The same CARC 251 may appear with different Group Codes:

Related Denial Codes