Mental Health · Independent Medical Opinion / Nexus Letter

PTSD

Nexus letters and independent medical opinions for Post-traumatic stress disorder (PTSD) VA disability claims, prepared exclusively by licensed psychologists and board-certified psychiatrists. We conduct the structured diagnostic evaluation, connect your verified stressor to the current diagnosis, build marker-based support for military sexual trauma claims, and document occupational and social impairment in the language of Diagnostic Code 9411, the evidence that separates a 30% rating from 70%.

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VA DIAGNOSTIC CODE

DC 9411

Post-Traumatic Stress Disorder (PTSD)
RATING
CRITERIA
100%
Total occupational and social impairment
70%
Deficiencies in most areas: work, school, family relations, judgment, thinking, or mood
50%
Reduced reliability and productivity
30%
Occasional decrease in work efficiency, with intermittent periods of inability to perform tasks
10%
Mild or transient symptoms, decreased efficiency only during periods of significant stress
0%
Diagnosis established, symptoms not severe enough to interfere with functioning or require continuous medication

About PTSD VA Claims

Post-traumatic stress disorder (PTSD) is the most claimed mental health condition in the VA system, and one of the most misunderstood at rating time. The reason is structural. Every mental health condition is rated under one General Rating Formula, and that formula does not measure the diagnosis. It measures occupational and social impairment: what the condition does to work, relationships, memory, judgment, and daily functioning. A PTSD diagnosis alone supports a 0% rating. The impairment evidence is what supports everything above it.

Service connection rests on three elements. A current diagnosis from a qualified mental health clinician. A verified in-service stressor. And a medical opinion linking the two. The stressor rules are more flexible than most veterans believe. Combat and fear of hostile military or terrorist activity carry relaxed verification standards, and military sexual trauma has its own evidence rules built around markers rather than official reports, because the VA recognizes most MST was never reported.

The recurring failure point sits at the exam. A C&P evaluation is a short snapshot, and veterans trained to hold composure often present well for thirty minutes while their daily reality looks very different. Our clinicians address both halves of the problem: a structured diagnostic evaluation, including the CAPS-5 where the case calls for it, that produces measured findings a rater cannot dismiss, and functional documentation that covers the time the snapshot never sees.

Three Ways PTSD Connects to Service

Different stressor types carry different verification rules. Knowing which rule applies to your claim changes what evidence you need, and what you do not.

Combat Stressor

RELAXED VERIFICATION

For veterans who engaged in combat, the lay statement itself can establish the stressor when it is consistent with the circumstances of service. No incident report is required. The work shifts to the diagnosis and the functional evidence.

Fear of Hostile Activity

NO SINGLE INCIDENT NEEDED

Veterans who served where attack was a real, ongoing threat can establish the stressor through the circumstances of deployment confirmed by a VA psychiatrist or psychologist, or one the VA contracts with. Convoy duty, indirect fire, base attacks. The rule exists precisely because no one documented every close call.

Non-Combat & Military Sexual Trauma

EVIDENCE SUPPORTED

Non-combat stressors need supporting evidence such as unit records or buddy statements. Military sexual trauma has its own rules: because most MST was never officially reported, claims can be supported by markers, including changes in performance evaluations, a transfer request, health visits around the time of the event, or a statement from someone you confided in.

Why PTSD Claims Are So Often Underrated

Where Ratings Fall Short

A PTSD rating is built on evidence of impairment. These are the three gaps we see most.

1

The file shows a diagnosis, not a life.

Treatment notes confirm PTSD but say nothing about the job that ended, the marriage under strain, or the crowds a veteran cannot enter. The rating formula measures exactly those things, so a file without them rates low no matter how real the condition is.

2

The exam captured thirty composed minutes.

Veterans are trained to hold it together, and many do exactly that at the C&P exam. The examiner records what they saw. The fix is evidence across time and settings: treatment records, statements from family and coworkers, attendance and work history.

3

Lay evidence was never gathered.

A spouse's statement about nightmares and hypervigilance, or a supervisor's account of missed days and conflicts, is competent evidence the VA must weigh. Most files contain neither, and the rating decision fills the silence with the exam snapshot.

What These Claims Look Like

In Practice

Rated 30%, but the work history says 70%

A veteran holds a PTSD diagnosis and a 30% rating, yet has lost three jobs in four years to conflicts, absences, and an inability to tolerate supervision. The evaluation documents impairment across work, family, and mood in the formula's own terms, and lay statements from a spouse and a former supervisor cover the years the exam never saw.

Rating increase · Functional evidence

Denied for lack of a verified stressor

A veteran who ran convoy security was denied because no single incident appeared in the record. The claim is rebuilt under the fear of hostile military or terrorist activity rule: deployment records confirm the circumstances, and the clinician confirms the stressor is adequate to support the diagnosis.

FEAR OF HOSTILE ACTIVITY · DENIED CLAIM REBUILT.

Military sexual trauma with no report on file

A veteran never reported the assault and assumed that ended the claim. A careful and private record review finds what the VA calls markers: a sudden drop in performance evaluations, a transfer request weeks after the event, and a statement from the friend she confided in at the time. The evaluation and opinion are built on that foundation, at her pace.

MST MARKERS · HANDLED WITH CARE

What's Included

Structured diagnostic evaluation by a licensed psychologist or board-certified psychiatrist, conducted by secure telehealth, including the CAPS-5 where the case calls for it
Independent review of your claim file, service records, and any prior C&P examination to identify what the evidence is missing
Stressor analysis matched to the correct verification rule: combat, fear of hostile activity, non-combat, or MST markers
A nexus opinion connecting the verified stressor to the current diagnosis, with the medical reasoning written out and supported by literature
Functional impairment documented in the language of the General Rating Formula, across work, social, and daily settings
Guidance on lay evidence: which statements from family, friends, and coworkers would strengthen the file, and what they should cover
Rebuttal opinions when a C&P examiner's conclusion did not address your evidence
Documentation of the PTSD foundation for physical secondary claims, prepared for the physician who authors them
Specialist Guide

Who Should Write Your PTSD Independent Medical Opinion / Nexus Letter?

Match the writer to the medical question for maximum probative weight:

Licensed Psychologists
PhD and PsyD clinicians trained in structured assessment. They administer the diagnostic evaluation, connect the stressor to the diagnosis, build marker-based MST support, and document impairment in rating-formula language. The stronger author for most PTSD claims, because testing produces measurable findings a rater cannot dismiss as subjective.
1600+
Psychiatrists
Board-certified physicians whose training covers the body as well as the mind. The stronger author when the claim carries medical questions: a contested diagnosis, layered conditions where the VA disputed which symptoms belong to what, symptoms the VA argued could have a medical cause, or a rebuttal of a physician C&P examiner, where credential parity carries weight.
1600+

Frequently Asked Questions

About PTSD Independent Medical Opinion / Nexus Letters

PTSD is rated under Diagnostic Code 9411 using the General Rating Formula for Mental Disorders, at 0%, 10%, 30%, 50%, 70%, or 100%. The rating does not follow the diagnosis. It follows occupational and social impairment: how the condition affects work, relationships, memory, judgment, and daily functioning. Two veterans with the same diagnosis can hold very different ratings, and the evidence of function is what separates them. F

Three elements. A current PTSD diagnosis from a qualified mental health clinician. A verified in-service stressor. And a medical opinion linking the stressor to the diagnosis. Beyond service connection, the rating itself depends on a fourth element most files are missing: documented evidence of how symptoms impair work and daily life.

The stressor is the in-service event or circumstance the PTSD traces to. Combat, a hostile attack, an accident, the death of a fellow service member, fear of hostile military or terrorist activity while deployed, or military sexual trauma. Different stressor types carry different verification rules, and knowing which rule applies to your claim changes what evidence you need to gather.

Often yes. The VA's fear of hostile military or terrorist activity rule covers veterans who served in areas where attack was a real ongoing threat, even without a single documented incident. If service records confirm you served in such circumstances and a VA psychiatrist or psychologist, or one the VA contracts with, confirms the stressor is adequate to support the diagnosis, the claim can proceed without incident-level proof. Our independent opinion supports the diagnosis and the functional evidence that VA confirmation builds on.

Yes. The VA recognizes that most military sexual trauma was never officially reported, so these claims do not depend on a report that may not exist. They can be supported by what the VA calls markers: changes in performance evaluations, a request for transfer, health visits around the time of the event, or a statement from someone you confided in. Our clinicians review these records carefully and privately, and they often find support a veteran did not know was there.

The 70% level describes deficiencies in most areas of life, including work, family relations, judgment, thinking, or mood. It matters beyond the monthly amount, because a single condition rated 70% opens the schedular door to TDIU. What usually separates the two levels is not the diagnosis but the documentation: evidence of how symptoms actually play out at work and at home, over time, from people who see it.

Usually because the file showed a diagnosis but not the impairment. A C&P exam is a short snapshot, and many veterans present composed for thirty minutes while their daily reality looks very different. The fix is evidence the snapshot cannot see: treatment records over time, statements from family and coworkers, work and attendance history, and an independent evaluation that documents impairment across settings rather than a single morning.

The CAPS-5 is the Clinician-Administered PTSD Scale, a structured diagnostic interview widely regarded as the reference standard for PTSD assessment. It produces measured, criterion-by-criterion findings rather than a general impression, which gives a rater something concrete to weigh and makes the diagnosis far harder to dismiss. Our psychologists administer it as part of the evaluation when the case calls for it.

Yes. Service-connected PTSD anchors several well-documented secondary claims: sleep apnea through sleep fragmentation and medication-related weight gain, GERD and IBS through chronic stress physiology, hypertension through sustained sympathetic activation, and migraines through stress-induced neurovascular changes. Because those claimed conditions are physical, the opinions come from physicians in the matching specialty, and the clinicians here document the PTSD that anchors the chain.

No. The VA assigns one combined rating for all mental health conditions together, because their symptoms overlap and the formula measures total occupational and social impairment. Every diagnosis still matters. Each contributes symptoms to the combined picture, and each service-connected mental health condition can anchor its own physical secondaries.

Yes, and PTSD is one of the most common foundations for TDIU. When service-connected PTSD prevents substantially gainful employment, TDIU pays at the 100% rate even if the schedular rating is lower. The documentation must connect specific symptoms to specific work capacities: concentration, reliability, working with supervisors and the public, and adapting to workplace stress.

Only mental health clinicians. A licensed psychologist authors most PTSD opinions, and a board-certified psychiatrist takes the cases that turn on medical questions, such as a contested diagnosis or a rebuttal of a physician C&P examiner. Both cost the same with us, so there is no reason for us to steer you. The fee is higher than our physical-condition letters because it includes a structured diagnostic evaluation, not only a record review.

The VA has proposed replacing the current formula with a model that rates impairment across life domains. As of this writing the change is not final. Veterans already rated keep protections, and if a new rule takes effect, the VA applies whichever criteria produces the more favorable rating for existing claims. The practical guidance is the same as ever: veterans with valid claims are better served filing now than waiting on a rule that may or may not arrive.

No. The evaluation is conducted by secure telehealth and the opinion is records-based, so distance does not matter. Our psychologists and psychiatrists serve veterans in all 50 states, and the letter carries the same weight with the VA whether it was written across town or across the country.

A no-obligation conversation about your history, your diagnosis if you have one, and your goals. We talk through your stressor type and its verification rule, what your file already shows, and whether an evaluation and opinion would genuinely help. There is no pressure to proceed. If a letter would not add value to your claim, we will tell you.
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Looking for a DBQ instead? Disability Benefits Questionnaires are handled within our separate DBQ service. This page covers the PTSD Nexus Letter (DC 9411) - Stressor Verification & Rating Evidence Nexus Letter.