Clear and unmistakable error
A CUE claim reaches back into a decision that became final years or decades ago and, if it succeeds, pays from the original date. The standard is deliberately brutal, and most CUE claims fail for the same three reasons.
A VA decision you did not appeal within one year becomes final. Ordinarily that is the end of it: you can file a new claim going forward, but you cannot recover the years in between.
Clear and unmistakable error is the exception. Under 38 CFR § 3.105(a), final decisions are accepted as correct with respect to the evidentiary record and the law that existed at the time, in the absence of clear and unmistakable error. Where such error is shown, the prior decision is reversed or amended, and it is treated as though the correct decision had been made at the time. That is what makes CUE valuable: the effective date runs from the original decision, so a successful claim can carry decades of retroactive pay.
There is no time limit on raising it. A decision from 1974 can be challenged today.
The standard, and why it is so hard
CUE is not "the VA got it wrong." It is closer to "no reasonable adjudicator applying the law to that record could have reached that conclusion." Three things must all be true:
- Either the correct facts as they were known were not before the adjudicator, or the law in force at the time was incorrectly applied.
- The error is undebatable. Not merely arguable, not a matter on which reasonable people could differ. If two adjudicators could legitimately have reached different conclusions, it is not CUE.
- The error manifestly changed the outcome. A mistake that would not have altered the result, even if plainly a mistake, does not qualify.
The review is confined to the record and the law as they existed at the time of that decision. You cannot use evidence that did not exist then, and you cannot use a later change in the law or a later court interpretation.
Disagreement with how evidence was weighed. This is the big one. Arguing the rater should have believed your doctor over the examiner is a weighing disagreement, and weighing disagreements can never be CUE, by definition. New evidence. Anything not in the file at the time is outside the scope entirely. Failure to assist. A breach of the duty to assist is not CUE, because the argument is that the record should have been better, not that the decision was wrong on the record that existed.
What does qualify
Errors that are mechanical, legal, and provable from the face of the file:
- A regulation applied incorrectly. The rating criteria in force at the time plainly required 30% on the findings recorded, and 10% was assigned.
- A regulation ignored altogether. The bilateral factor was never applied where two paired limbs were rated. The minimum compensable rating for painful motion under § 4.59 was never considered.
- Arithmetic. Combined rating tables misapplied, producing a total the table does not support.
- An effective date contrary to the regulation. A claim filed within a year of separation, with the date set at the filing date instead of the day after separation.
- Evidence physically in the file that was overlooked. Not evidence that was weighed and rejected, which is a weighing question, but evidence that plainly was never considered at all.
- A statutory entitlement never adjudicated. SMC-K entitlement obvious on the recorded findings and never addressed. See Special Monthly Compensation.
The pattern is that a successful CUE points at something on the page and says: this rule existed, these facts were recorded, and the two do not match. It does not say: I should have won.
Use the ordinary lanes if you still can
If the decision is less than one year old, do not file CUE. You have far better options, all of which use a lower standard:
| Situation | Use |
|---|---|
| Decision under a year old, the rules were misapplied to the existing record | Higher-Level Review (VA Form 20-0996) |
| Decision under a year old, you have new evidence | Supplemental Claim (VA Form 20-0995) |
| Any age, you have new and relevant evidence | Supplemental Claim |
| Final decision, no new evidence, an undebatable legal error on the old record | CUE |
A Supplemental Claim can be filed at any time, not just within a year, so a final decision is not a dead end even without CUE. The difference is the effective date: a Supplemental Claim generally pays from the date you file it, while a successful CUE pays from the original decision. That gap is the entire reason to attempt CUE.
How to raise it
There is no dedicated CUE form for a regional office decision; it is raised in writing, and VA Form 21-4138 is commonly used. A CUE challenge to a Board decision is different and goes to the Board itself under its own motion process.
Whatever the route, the request must be specific. A general assertion that a past decision was wrong is not a valid CUE claim and can be dismissed, and a dismissal on those grounds may bar you from raising the same error again. State:
- The exact decision, by date.
- The exact error, identified precisely.
- The law or regulation as it read at that time, cited.
- The evidence that was in the file then, cited to the record.
- Why the outcome would manifestly have been different.
You cannot do any of that without the C-file. It holds the rating worksheet, the examiner's report, and the prior decision, which is the record the review is confined to. Requesting it is the first step, not an optional one.
CUE is the most technical thing an ordinary veteran will attempt, it turns on the regulation text as it read decades ago, and a badly framed attempt can foreclose a good argument permanently. This is where an accredited representative or a VA-accredited attorney earns their place. Find one through VA.gov, and verify accreditation before signing anything.
A realistic expectation
Most CUE claims fail, and that is by design rather than by accident: the standard exists to protect the finality of decisions, not to provide a second appeal. Filing one on a weighing disagreement wastes months and teaches nothing.
But where a genuine mechanical error sits in an old decision, and particularly where an effective date is provably contrary to the regulation, it is the only tool that recovers the intervening years. Read the decision, read the regulation as it stood, and see whether the two actually match. If they plainly do not, it is worth pursuing.