Claim rejection
A rejection is a claim returned before adjudication because it failed a format or data edit — it never entered the payer's system and cannot be appealed.
Updated
A claim rejection is a claim stopped by an edit before the payer adjudicates it — at the clearinghouse or at the payer's front door. It fails a structural or data check: a malformed field, an invalid identifier, a member ID that does not match, a missing required element.
Because a rejected claim was never adjudicated, there is no decision to contest. It is corrected and resubmitted, and to the payer it arrives as a first submission.
In practice
The distinction from a denial is the single most consequential one in denial work, because the two have different owners, different fixes, and different clocks. A rejection is fixed by the billing team and resubmitted; a denial is a payer decision that is either corrected, appealed, or written off.
Rejections are also easy to lose. A denial arrives on the remittance, where it is counted; a rejection is returned in a clearinghouse report that nobody is obliged to read, so an unworked rejection can sit invisible until the timely-filing window closes.
Commonly confused with
- Denial: A denial is the payer's decision after adjudication; a rejection never reached adjudication. Only a denial can be appealed.