VetVerity · PTSD guide
A calm, plain-language guide to PTSD nexus letters for VA claims.
A PTSD claim turns on a single piece of medical reasoning: an independent opinion that links your PTSD diagnosis to a specific in-service event, exposure, or stressor. The opinion letter that does this — commonly called a “nexus letter” — is what the rest of this page is about. The language inside it is what the VA rater reads as evidence, and a few simple rules separate a letter that helps from one that gets denied on speculation.
The opinion that moves the claim
What a strong PTSD nexus letter actually contains.
A PTSD claim is service-connection-by-opinion: the VA rarely has the in-service mental-health record on file, so the rater leans on what a current clinician writes about the link between what happened in service and the diagnosis you carry today. Four markers show up in every letter that gets taken seriously — and four red flags show up in every letter that gets denied on “speculative.”
- Probabilistic language at the VA’s ≥50% bar — “at least as likely as not,” not “possible” or “cannot rule out.”
- The specific stressor named, with its date range or unit assignment — not a generic reference to “service treatment records.”
- The chain in writing: in-service event or exposure → current PTSD diagnosis → current symptom severity and occupational / social impairment.
- Signed on letterhead, with credentials, license number, and the date. A PDF with no signature or no clinic block reads as boilerplate.
Credible language
A sample of credible specialist language.
Below is an abbreviated excerpt of the kind of language a board-certified clinician writes for a PTSD claim. It is illustrative — actual language depends on the specialist and your record — but the structure is the same the VA raters are trained to look for.
It is at least as likely as not (≥50% probability) that the veteran’s current PTSD diagnosis is etiologically related to the documented in-service combat stressor during the 2007–2008 deployment to Helmand Province. The veteran meets DSM-5 criteria for PTSD, and the longitudinal clinical picture — including avoidance, hyperarousal, and intrusive re-experiencing documented since that deployment — is consistent with a service-connected onset rather than a post-service etiology.
Illustrative — actual language depends on the specialist and your record.
Words that get denied
Common VA rejection language to avoid.
A rater reads the letter once and categorizes it. Speculative phrases drop the letter into the “no” pile before the rest of the reasoning is even read. Specialists who write nexus letters for VA claims know these phrases by heart and avoid them — even when the underlying diagnosis is correct.
- “cannot rule out”
- “possible”
- “speculative”
- “more likely than not” (below the VA’s ≥50% bar, this language actually counts against you)
- “without further records”
When to book an evaluation
Book an evaluation vs. self-file.
Self-filing a VA claim is free and a real option for some conditions; PTSD is almost never one of them, because service connection is rarely documented in your service treatment records when the stressor is combat, MST, or a delayed-onset reaction. The closer your record is to a clean service-connected diagnosis, the more likely it is that self-filing is enough; the further it is from that, the more a specialist moves the needle for you.
Specialists in this directory
PTSD nexus-letter specialists.
The directory is verified monthly. Every profile is tagged either Nexus Letter Specialist or Veteran-Friendly Practice so you know which appointments produce the opinion letter your claim needs.
Pick the right appointment.
Browse the directory and pick the kind of appointment your claim actually needs.
Every profile is tagged “writes nexus letters” or “veteran friendly.” Once you’ve picked one — or two — the contact details unlock for $25, lifetime.