What makes a medical opinion hold up

What VA's own manual requires

One of those seven is the whole ballgame for a nexus letter: a medical opinion is insufficient if it is not properly supported by a valid rationale or by the evidence of record. A conclusion with no reasoning behind it does not meet VA's own standard.

If VA gave you an exam, it has to be adequate

In Barr v. Nicholson, 21 Vet. App. 303 (2007), the Court of Appeals for Veterans Claims held that when VA provides an examination, the examination must be adequate, or the veteran must be notified why one will not or cannot be provided.

If your private evidence was unclear, VA was supposed to ask

Under 38 U.S.C. 5103A(a), VA has a duty to return unclear or insufficient private examination reports for clarification when the missing information is relevant, factual, and objective, and it bears on the value of the report. VA can ask the private examiner, ask you to obtain it, order its own examination, or explain why clarification is not needed. What it is not supposed to do is simply disregard the report.

What the Board actually did with these opinions

The record holds 3,058 distinct relevant decisions across Diagnostic Codes 6847, 9411 and 8100 in 2024 and 2025, drawn from 3,344 extracted issue rows. Each decision is counted once within each outcome even when it covers more than one of these codes. Of those 3,058 decisions, 942 had a granted issue and 762 had a denied issue. 25 of 3,058 decisions appear in both groups, because one decision can grant one condition and deny another. Opinion flags below are counted only from the evidence recorded for that outcome.

Any cited evidence was recorded in 830 of 942 granted decisions and 567 of 762 denied decisions. A decision with nothing recorded means the extraction found no listed evidence, not that the file had none. Generic references to an examination are not counted as opinions below.

Private opinions and nexus letters

An explicitly named private or independent medical opinion, or a nexus letter, was cited in 202 of 942 granted decisions and 27 of 762 denied decisions. A nexus letter whose author is not stated is included here, which does not prove it was private or paid for.

VA examiner opinions

A VA examiner opinion or VA medical opinion was cited in 154 of 942 granted decisions and 66 of 762 denied decisions.

Remands for an inadequate exam or opinion

1,133 of 3,058 distinct decisions had a remanded issue. 428 of 1,133 were remanded for an inadequate examination or opinion, and 284 of those 428 had a recorded description of the defect.

Explicit wording about a missing rationale appeared in 44 of 1,133 remanded decisions, and in 34 of 428 inadequate-exam remands. That is narrower than the broader rationale theme listed below.

Rationale or explanation missing or inadequate was recorded in 36 of 284 described inadequate-exam remands. Secondary causation or aggravation not addressed was recorded in 29 of 284 described inadequate-exam remands. Lay reports or continuity not addressed was recorded in 26 of 284 described inadequate-exam remands. Relevant records or history not considered was recorded in 16 of 284 described inadequate-exam remands. Inaccurate factual premise was recorded in 6 of 284 described inadequate-exam remands. These are overlapping wording-based groupings, not a complete classification of every remand.

These counts show what the Board cited, not what works. The Board lists the evidence it relied on when it grants. Denials often say less. A private opinion appearing more often in grants than denials does not mean buying one improves a claim. It means the Board names them when they carry the decision.

Where opinions fail

These are what the Board recorded in the 284 of 428 inadequate-exam remands with a described defect. The themes are transparent wording-based groupings of the extracted defect descriptions, not a fresh review of any decision. Each decision is counted once per theme, and one decision can appear under more than one theme, so the counts can overlap. 191 of 284 described remands matched none of these narrow categories and are not counted under any theme.

• Rationale or explanation missing or inadequate36 of 284 described inadequate-exam remands
• Secondary causation or aggravation not addressed29 of 284 described inadequate-exam remands
• Lay reports or continuity not addressed26 of 284 described inadequate-exam remands
• Relevant records or history not considered16 of 284 described inadequate-exam remands
• Inaccurate factual premise6 of 284 described inadequate-exam remands

None of this is about who writes the opinion. A letter from a specialist with no reasoning is worth less than a note from a treating physician who explains what in the record led to the conclusion. The Board is reading for the reasoning.

A word on template letters

There is a market in prepared nexus letters, and some of them are fine. A physician who reviews the actual record and explains the reasoning is doing real work, whoever is paying for it.

The ones that fail look the same as each other. Same structure, same phrasing, a conclusion with no path to it, and no sign anyone read the file. Raters and Board attorneys see hundreds of these, and an opinion that reads like a form carries the weight of a form.

Ruck does not write nexus letters and does not refer anyone to anybody who does. If you are considering paying for one, the questions worth asking are who reviews the record, what their credentials are, and what happens if the opinion does not support your claim. A provider willing to tell you they cannot support it is the one worth your money.

What you can do about it

The gap checker shows where your description falls short of the rating criteria. The C&P tool shows what the examiner is filling out. Both of those come before any opinion is written, and the record is clearer when your own account is already specific. Both start from the home page.

These counts come from automated extraction of the published decisions. Errors are possible. If something here looks wrong, the contact address is in the footer.