Clear and Unmistakable Error (CUE) Claims Explained

What CUE is — and isn't

Clear and Unmistakable Error is the narrow doctrine, codified at 38 CFR § 3.105(a), that lets VA revise a final decision (one that was not appealed within a year, or one already affirmed on appeal) when the rater made an obvious error. CUE is the only collateral attack available on a final VA decision.

CUE is not a 'do-over.' It is not a way to argue the evidence should have been weighed differently. It is not a vehicle to introduce new evidence. It exists only to correct undebatable errors that the record at the time of the prior decision plainly establishes.

The three-prong standard

1. Either the correct facts as they were known at the time were not before the adjudicator, OR the statutory or regulatory provisions extant at the time were incorrectly applied.
2. The error must be undebatable — reasonable minds could not differ.
3. The error, if corrected, would have manifestly changed the outcome of the decision.

Common scenarios where CUE actually applies

• The rater applied the wrong version of a rating criterion (e.g., used a post-amendment version when the claim predated it).
• Service connection was denied despite the file containing a clear in-service incurrence finding the rater ignored on the face of the record.
• An effective date was assigned later than the law required under § 3.400 (e.g., the one-year-after-separation rule was missed).
• Two ratings were assigned for the same disability under different diagnostic codes in violation of pyramiding (§ 4.14).
• The wrong combined-ratings calculation was used.

What does NOT support CUE

• Disagreement with how the rater weighed conflicting medical opinions.
• A duty-to-assist error (those are remediable through HLR or Supplemental Claim, not CUE).
• New medical evidence or new case law decided after the prior decision.
• A subsequent change in the law that was not in effect at the time of the original decision.

How to file a CUE motion

There is no special form. The motion is submitted in writing to the agency of original jurisdiction (the VA Regional Office for a rating decision, or the Board for a Board decision). It must (1) identify the specific decision being challenged, (2) state the alleged error with specificity, (3) explain why it satisfies the three-prong standard, and (4) explain how the outcome would have manifestly changed.

There is no deadline. CUE can be raised at any time. If granted, the corrected decision is treated as if it had been correct from the original date — restoring the original effective date and triggering back pay for the entire intervening period.

Where these claims break down

• ×Framing a re-weighing-of-evidence argument as CUE — it will be denied as a matter of law.
• ×Failing to specify the exact decision, date, and issue being challenged.
• ×Submitting new evidence with a CUE motion — it cannot be considered.
• ×Conflating CUE with the AMA decision-review lanes (HLR, Supplemental Claim, Board appeal).
• ×Filing CUE before the prior decision is actually final (i.e., during the appeal window).

Frequently Asked Questions