Nexus Letter Example: A Physician's Sample

The Anatomy of a Nexus Letter

Every strong nexus letter is built from the same parts. Whatever length it runs, each part does a specific job, and a rater who reads dozens of these a week is scanning for all of them. Leave one out and the letter reads as incomplete, no matter how confident it sounds. Here is what the VA is reading for, in the order it usually appears.

1. 1

   Provider identification and credentials

   Who the clinician is, their license and specialty, and why they are qualified to give this opinion. Specialty that matches the condition adds weight.

2. 2

   Records reviewed

   A statement that the clinician actually read the file: service treatment records, VA records, test results, and any lay statements. An opinion built on the record beats one built on the veteran's say-so.

3. 3

   The medical rationale

   The reasoning that connects the condition to service, spelled out. This is the part examiners weigh most, and the part weak letters skip.

4. 4

   The opinion, in the VA's language

   The conclusion stated as 'at least as likely as not' (a 50 percent or greater probability). This one sentence is what the rater looks for first.

5. 5

   Supporting basis

   What the opinion rests on: the clinician's expertise, the records, and the medical literature. A rationale without a basis reads as a guess.

6. 6

   Signature and contact

   A signature, printed name, credentials, license number, and contact information, so the VA can verify the author.

For the full checklist the VA applies to each of these, see our guide to nexus letter requirements.

The Language That Makes It Work

The single most important line in the example is the opinion itself. The VA weighs a nexus letter on whether it reaches a specific probability, and the wording is how it shows that. This is where most letters are won or lost. A caring provider who writes that a condition is 'likely related' or 'probably connected' may mean 50 percent or better, but the rater cannot read intent; they read the words on the page. The standard comes from the benefit-of-the-doubt rule: when the evidence for and against is roughly balanced, the tie goes to the veteran, so a letter that lands the opinion squarely at or above 50 percent tips a close claim in your favor.

That 50 percent standard is not a courtesy; it is the law. It comes from the benefit-of-the-doubt rule in 38 U.S.C. 5107(b), carried out in 38 C.F.R. 3.102. When the evidence for and against is in equipoise, the VA must resolve it in the veteran's favor.

Causal vs. Correlative Language

Probability is only half of the opinion line. The other half is the verb: whether the letter speaks in causal language or merely correlative language. Causal language states that service produced the condition: 'caused by', 'due to', 'a result of', 'incurred in', or, in an aggravation claim, 'aggravated by'. Correlative language only observes that two things appear together: 'associated with', 'linked to', 'consistent with', 'related to'. An association is not a cause, and the VA cannot grant service connection on a correlation alone.

The distinction matters because the medical literature mostly speaks in correlations. A study reports that a condition is associated with a risk factor; it cannot say what caused one veteran's illness. A strong letter uses that literature as support and then does what a study cannot: it states a causal opinion about this specific veteran. The example above does both. The rationale cites recognized risk factors and the natural history of the condition, and the opinion line converts that evidence into causal language, 'at least as likely as not incurred in or caused by' active-duty service. A letter that stops at 'associated with service' leaves the causal question unanswered, and the rater will not answer it for you.

How to Use This Example

The example is a model to learn from, not a document to submit. Here is how to put it to work on your own claim.

1. 1

   Do not copy it word for word

   A letter that matches a template found online carries little weight, and identical letters can hurt more than help. Use it to understand the shape, then have a clinician write to your facts.
2. 2

   Bring it to your provider

   Show it to the physician who knows your condition. It tells them exactly what the VA is reading for, which many providers have never been told.
3. 3

   Check your letter against the six parts

   When you get a draft back, confirm each of the six parts is present, above all the opinion line and the rationale. A missing part is a fixable weakness before you submit.
4. 4

   Submit it as evidence with your claim

   File it with your VA Form 21-526EZ (or 20-0995 for a Supplemental Claim), along with the records the letter relies on, so the rater sees the opinion and the basis together.
5. 5

   Keep a copy and track the claim

   Save a signed copy for your records, and follow the claim on VA.gov or through a Veterans Service Officer. If the VA schedules a C&P exam, bring the letter so the examiner sees the opinion you have already submitted.

For the full process, from finding a provider to filing, see our guide on how to get a nexus letter.

Who Writes a Strong Letter, and What It Costs

Any licensed clinician can write a nexus letter, but the VA gives the most weight to a provider whose specialty fits the condition, and to a letter that does everything the example above does: reviews the records, gives a rationale, and states the opinion in the right language. Many treating providers have simply never been shown what the VA needs, which is why so many letters fall short on the rationale or the opinion line.

You have two broad options: your own treating provider, or an independent physician who writes these opinions regularly. A treating provider already knows your history, which helps, but many have never seen what the VA requires and write in clinical language that misses the mark. An independent physician who reviews the records fresh can be just as persuasive, sometimes more so, because the opinion reads as neutral rather than advocacy. Either can work; what matters is that the letter does everything the example does.

Patriot Path's physicians write letters built to this standard for the exact claim you are filing: records reviewed, the connection explained, supporting evidence, and the opinion in the language the VA expects. One flat fee of $1,500, and the first consultation is free.

Not sure who qualifies? See our breakdown of who can write a nexus letter, and see our flat, upfront nexus letter pricing and what is included.