Depression secondary to chronic pain
Years of a bad back or a ruined knee do something to a person that has nothing to do with range of motion. The rating schedule has a place for it, the regulations allow it, and the medical literature supports it. It is still one of the least-filed claims in the system, because nobody thinks of their back as a mental health condition.
Under 38 CFR § 3.310, a disability that is "proximately due to or the result of" a service-connected condition is itself service connected. Depression, anxiety, or an adjustment disorder caused by living with a service-connected physical condition fits that rule exactly, and once connected it is rated on the same General Rating Formula for Mental Disorders as PTSD: 0, 10, 30, 50, 70, or 100 percent based on occupational and social impairment.
Why the theory works
The relationship between chronic pain and depression is one of the best-established in medicine. Pain disrupts sleep, limits activity, ends careers, strains marriages, and removes the things people used to do for relief. Depression, in turn, amplifies pain perception. Clinicians treat the two together as a matter of routine. A VA examiner asked whether a veteran's depression is at least as likely as not caused or aggravated by twenty years of service-connected back pain is being asked a question with a well-documented answer.
The same logic applies to other physical conditions with a heavy daily load: migraines, tinnitus severe enough to disturb sleep and concentration, IBS with its social constraints, erectile dysfunction, disfiguring scars, hearing loss that isolates, and any condition that has forced a change of work. The more the physical condition has rearranged your life, the stronger the theory.
§ 3.310 covers both. If you had no depression before and developed it under the weight of the physical condition, that is causation. If you had a history of depression that was manageable and the physical condition made it markedly worse, that is aggravation under § 3.310(b), and the VA compensates the increase above the pre-existing baseline. Ask the opinion to address both, because an examiner who rules out causation may still find aggravation.
What the claim needs
A current diagnosis
From a psychiatrist, psychologist, or other qualified mental health provider. "Major depressive disorder," "persistent depressive disorder," "generalized anxiety disorder," "adjustment disorder with depressed mood," or "unspecified depressive disorder" all work; the label does not change the rating formula. A primary care note saying "seems down" is not a diagnosis. If you are not in treatment, start. VA mental health care is free for most veterans with a service-connected condition, and treatment records over time are the evidence the rating formula is built on.
The primary condition, already service connected
The secondary claim rides on the primary. If the back, knee, or migraine is not yet service connected, file them together and state the secondary theory on the form; the VA will decide the primary first and the secondary follows if it succeeds.
A nexus opinion
This is the claim. The opinion has to say the mental health condition is at least as likely as not caused or aggravated by the named service-connected physical condition, and explain why in terms of your history: when the pain began, when the mood symptoms followed, what the pain took away, what the treating records show. An opinion from your treating mental health provider carries the most weight because they know the history. A private psychologist's evaluation is the common alternative. The evidence and nexus guide explains what makes an opinion persuasive and what gets one discounted.
The typical denial says the depression is due to non-service factors: a divorce, a job loss, finances, family history. A strong opinion gets there first. It acknowledges the other stressors and explains why the service-connected condition is still at least as likely as not a cause or an aggravating factor, often because the divorce, the job loss, and the finances are themselves downstream of the physical condition. A claim does not need the physical condition to be the only cause. It needs it to be a cause.
The one-rating rule
The VA assigns one rating for all of a veteran's psychiatric symptoms together under § 4.130, because the symptoms overlap and rating them twice would be pyramiding. The practical consequences:
- If you have no mental health rating, a secondary depression claim adds a new rating, commonly 30%, 50%, or 70%, to the combined total. On a veteran at 40% for physical conditions, a 50% secondary depression rating produces a combined 70%.
- If you already have a PTSD or other mental health rating, depression secondary to pain does not add a second number. It can still matter: the combined picture of all psychiatric symptoms may support a higher tier than the PTSD alone, and establishing the secondary connection protects the rating if the PTSD basis is ever questioned. File it as a claim for increase on the existing mental health rating with the secondary theory explained.
What it does to the total
Mental health ratings are large single numbers, and they move combined ratings more than most. They are also the most common single rating that meets the 70% threshold for TDIU, or that completes the 70%-combined-with-one-at-40% requirement when added to physical ratings. A veteran with a 40% back, a 20% knee, and a 50% secondary depression rating is at 80% combined with a single condition at 40% or more, which clears the schedular TDIU threshold of 70% combined with one rating at 40%. If the combination keeps them from working, the path to the 100% rate runs through TDIU, not through an appeal of the numbers.
The combined rating guide shows the arithmetic and the calculator runs it with your own numbers.
The evidence that moves the rating
Once connected, the rating follows the same rules as any mental health condition. What counts:
- Treatment records over time, showing symptoms, medication, and the provider's assessment of function.
- A symptom log: sleep, mood, days missed, withdrawal from people and activities.
- Lay statements from a spouse or friend describing the change, ideally tying it to the physical condition: "after the second surgery he stopped going to anything."
- Employment evidence: reduced hours, lost jobs, accommodations.
Read the mental health rating guide for what each tier requires and how to describe symptoms at the exam.
The checklist
- A mental health diagnosis from a qualified provider, with treatment ongoing.
- The primary physical condition service connected, or claimed at the same time.
- A nexus opinion addressing both causation and aggravation, that engages with your other stressors.
- The secondary theory stated on the 21-526EZ: "depression, secondary to service-connected lumbar spine condition."
- Treatment records, a log, lay statements, and employment evidence for the rating itself.
READY214 maps the secondary relationships that commonly follow the conditions you already have, mental health included, and tracks the evidence each one still needs. Free, no account needed to look.