Clear and unmistakable error (CUE) is a narrow way to ask VA to revise a final decision. It is not a general appeal and it is not a chance to submit a better medical opinion years later. The question is whether the decision was fatally wrong based on the record and the law that existed when VA made it. If the motion succeeds, the corrected decision can carry the effective date the original decision should have received. For a specific procedural clarification, read the M21-1 CUE due-process update separately from the substantive CUE standard explained here.

Two different CUE procedures

Start by identifying who made the final decision you are challenging:

  • Agency of Original Jurisdiction (AOJ) revision. A regional office can revise its own final decision under 38 C.F.R. § 3.105(a) (38 CFR § 3.105(a)). This is the rule generally used for a final rating or other AOJ determination.
  • Board CUE motion. A motion alleging CUE in a final Board of Veterans' Appeals decision is governed by 38 U.S.C. § 7111 and 38 C.F.R. Part 20, Subpart O (38 CFR Part 20, Subpart O, including § 20.1404). It is filed with the Board, not as a regional-office supplemental claim.

There is no universal “CUE form.” A written motion or request must identify the decision, date, issue, and specific error with enough detail for VA to understand the legal theory. VA Form 20-0995 is a Supplemental Claim form, not a CUE form. Do not label a CUE motion as a routine supplemental claim merely because that form is familiar.

The three-part test

The governing rules require more than an error in hindsight. A persuasive motion addresses all three parts:

  1. The correct facts were not before the adjudicator, or the law then in effect was incorrectly applied. Point to the exact record item or regulation. A later-created record is not part of the “record at the time.”
  2. The error is undebatable. It must be the sort of error about which reasonable adjudicators could not disagree—not a close call, a competing interpretation, or a preferred reading of the evidence.
  3. The error manifestly changed the outcome. Explain the result that necessarily would have followed if VA had used the correct fact or rule. If the outcome could still have been the same, the CUE test is not met.

The motion should quote or identify the relevant language in the decision, then explain the correct rule as it existed on that decision date. Keep the theory specific: one issue, one decision, and one outcome-changing error at a time is easier to evaluate than a list of every perceived unfairness.

What CUE is—and is not

Potential CUE theories can include applying the wrong diagnostic rule, relying on an indisputably incorrect fact when the correct historical record allowed no reasonable dispute, or failing to apply a controlling statute or regulation that was in force. A decision's failure to discuss a particular item is not automatically CUE. You may use your current copy of an old decision or claims file to locate the error, but current evidence cannot be used to rewrite the historical record.

The following are generally not CUE:

  • disagreement with how the adjudicator weighed or interpreted evidence;
  • a new diagnosis, nexus opinion, service record, or lay statement that was not in the record then;
  • a change in medical knowledge, regulation, or case law after the decision;
  • an argument that VA breached the duty to assist, such as not obtaining another examination. A duty-to-assist failure may matter in an active review lane, but it ordinarily does not create CUE in a final decision;
  • an argument that VA should have chosen a different reasonable factual interpretation.

Before you file

First check whether the decision is actually final and whether the one-year review period is still open. If it is, a Supplemental Claim, Higher-Level Review, or Board appeal usually preserves more options and allows evidence or argument that CUE cannot. CUE has no ordinary filing deadline, so there is usually no advantage to replacing a timely normal review with a premature CUE motion.

Obtain the decision and, when needed, the C-file. Make a timeline of the decision date, the issue, the evidence listed, and the law cited. Cipher can help you locate decision letters, exam reports, and code sheets for your own review; it does not decide whether the legal standard is met. If the motion concerns an older file, keep an unaltered copy and note the page or exhibit where each fact appears.

Because CUE is a legal standard with claim-specific consequences, consider a VA-accredited attorney or representative, particularly for a Board motion, a subsuming decision, or a repeat-motion risk. Do not promise a retroactive award merely because an old decision looks wrong. A careful, issue-specific motion is safer than a broad accusation.

Official sources