Many veterans develop depression or anxiety years after service, not from a traumatic event but from living with a service-connected disability: chronic pain that never lets up, a condition that ended a career, or symptoms that shrink daily life. Under 38 CFR 3.310, that pathway has its own basis for compensation.
This guide explains the secondary route. For how the resulting condition is then evaluated, see our anxiety and depression ratings guide; for the mental health series overview, start with our PTSD service connection guide.
What 38 CFR 3.310 requires
A secondary claim has three parts:
- A current diagnosis of the secondary condition - here, a diagnosed mental health disorder
- An already service-connected disability
- Competent medical evidence linking the two, either by causation or by aggravation
Causation and aggravation are different claims
Causation means the service-connected disability caused the mental health condition. Aggravation means a condition the veteran already had was made permanently worse by the service-connected disability, beyond its natural progression. The regulation recognizes both, and compensation for aggravation is based on the degree of worsening attributable to the service-connected disability.
A pre-existing history of depression, then, does not by itself defeat a claim. It changes the question a clinician has to answer - and an opinion that ignores the pre-existing history rather than addressing it tends to carry little weight.
Common pathways
The pathways a clinician may evaluate include:
- Chronic pain from a service-connected musculoskeletal condition contributing to depressive symptoms and sleep disruption
- Loss of function or mobility leading to social withdrawal and reduced activity
- A service-connected condition ending a career or limiting employment
- Another service-connected mental health condition contributing to a distinct additional diagnosis
- Medication effects documented in the treatment record
Where veterans start
Every case is different, and there is no obligation at any step. When veterans want to understand what their records actually support, these are the two most common starting points:
- Medical records review
A licensed physician reviews your records for a $250 flat fee and identifies which conditions the available evidence may support. The fee is refunded in full if nothing supportable is identified.
- Individual Psychological Evaluation Package
A telehealth evaluation with a psychologist licensed in your state. It includes a one-on-one evaluation of your history, symptoms, and functional impact, a DBQ when clinically appropriate, and a nexus opinion section when the evaluation supports one. It starts with a free screening - you pay nothing unless a full evaluation appears clinically appropriate.
What a defensible opinion addresses
A useful secondary opinion does more than assert the link. It identifies the service-connected disability and its documented severity, describes the timeline of mental health symptoms against that history, applies recognized medical reasoning to that specific record, and confronts other plausible explanations rather than leaving them unanswered.
It also states the standard in the terms the VA uses - whether the condition is at least as likely as not caused or aggravated by the service-connected disability. Our guide to what 'at least as likely as not' means explains that threshold.
Where to start
Because secondary claims turn on the specific record, the first step is a paid medical records review to determine what your documentation supports. Where a clinical evaluation is needed, our Individual Psychological Evaluation Package begins with a free screening.
Patriot NEXUS Letters provides independent medical evidence, not legal representation or claim filing. We do not guarantee a favorable conclusion or any VA outcome.
Common physical conditions linked to secondary depression
Chronic pain conditions such as back, knee, and joint disabilities are frequently associated with secondary depression and anxiety because ongoing pain limits activity, disrupts sleep, and affects relationships and employment.
Sleep apnea, tinnitus, and migraines are also commonly cited pathways. Chronic sleep disruption from apnea, constant ringing from tinnitus, and disabling headache days can each independently contribute to a diagnosable mood or anxiety disorder over time.
How the medical opinion should be structured
A useful secondary opinion identifies the specific service-connected condition, reviews the timeline between that condition's onset or worsening and the mental health diagnosis, and explains the medical mechanism connecting them, such as chronic pain's well-documented relationship to depressive symptoms.
The opinion should also address alternative causes in the record and explain why the service-connected condition remains at least as likely as not a contributing cause, consistent with the standard described in the VA's benefit of the doubt regulation.
Frequently asked questions
Can I claim depression secondary to a physical disability?
Yes. Under 38 CFR 3.310, depression or anxiety that is caused or aggravated by an already service-connected condition, such as chronic pain, sleep apnea, or tinnitus, can be granted service connection on a secondary basis, even though it was never diagnosed in service.
Do I need a new stressor to claim secondary depression?
No. Secondary mental health claims do not require an in-service stressor the way a direct PTSD claim does. The focus shifts to whether the service-connected condition caused or worsened the depression or anxiety, which is a medical nexus question.
Can depression and PTSD be rated together?
The VA generally avoids separate ratings for overlapping psychiatric symptoms under 38 CFR 4.130. Depression, anxiety, and PTSD symptoms are typically combined into a single mental disorder rating rather than rated twice for the same impairment.
What if my depression is aggravated, not caused, by another condition?
Aggravation is a recognized secondary theory. A qualified opinion can address the baseline severity of the depression before the service-connected condition and the extent to which that condition made it permanently worse.
What evidence supports a secondary mental health claim?
Treatment records showing the timeline of symptoms, statements describing how the physical condition affects daily functioning and mood, and a reasoned medical opinion connecting the two conditions all strengthen a secondary claim.