Clear and Unmistakable Error, commonly known as CUE, is a legal mechanism that allows veterans to challenge final VA decisions from the past on the grounds that the original decision contained an obvious mistake. A successful CUE claim can result in an earlier effective date and potentially years of retroactive compensation. However, CUE has an extremely high standard of proof and is one of the most difficult claims to win in the VA system.
For an error to qualify as CUE, three elements must all be present. First, the correct facts as they were known at the time must have been before the adjudicator, or statutory and regulatory provisions that existed at the time were incorrectly applied. Second, the error must be undebatable, meaning that reasonable minds could not differ on whether the error occurred. Third, the error must have manifestly changed the outcome, meaning that but for the error, the decision would have been different. All three elements must be satisfied, and the claim is evaluated based only on the evidence and law that existed at the time of the original decision.
Equally important is understanding what does not constitute CUE. A disagreement with how the VA weighed the evidence is not CUE, even if you believe they weighed it incorrectly. New evidence that was not in the file at the time of the decision cannot support a CUE claim. A change in interpretation of the law after the decision was made does not create CUE. Medical opinions that you now disagree with, or situations where the VA failed to fulfill its duty to assist you, also do not meet the CUE standard. The bar is intentionally set very high because CUE allows attacking decisions that have otherwise become final.
To file a CUE motion, you submit it to the VA regional office for decisions made at that level, or to the Board of Veterans Appeals for Board decisions. Your motion must be specific about which decision you are challenging, what the error was, and how the outcome would have been different without the error. Vague or general allegations of unfairness will be dismissed. You must identify the specific factual or legal error with precision. Many veterans benefit from working with an accredited attorney or claims agent on CUE motions because the legal standards are unforgiving.
The reason CUE matters so much despite its difficulty is the potential for retroactive benefits. If you win a CUE claim, your effective date reverts to what it should have been had the error not occurred. For veterans whose claims were wrongly denied or underrated years or even decades ago, this can mean substantial lump-sum back payments. A veteran who should have been rated at 70 percent in 2010 but was erroneously rated at 30 percent could receive the difference in monthly payments for over fifteen years if CUE is established.
Before pursuing a CUE claim, honestly assess whether your situation truly involves an undebatable error or whether you simply disagree with how the evidence was evaluated. Consult with a veterans service organization or attorney who has experience with CUE claims. If your situation involves missing evidence or duty to assist failures rather than a clear misapplication of known facts, other avenues like supplemental claims or appeals may be more appropriate paths forward.
Note: This article references sections of the VA's M21-1 Adjudication Procedures Manual. The VA periodically reorganizes the M21-1 and section numbers may have changed since this article was written. For the most current section references, visit the VA's public M21-1 Web Automated Reference Material System (WARMS).