Secondary service connection
Diabetes Mellitus, Type 2 Secondary to PTSD
If VA already rates you for PTSD, diabetes mellitus, type 2 can be claimed as secondary under 38 CFR § 3.310 — you do not have to prove it started in service.
Already rated
PTSD
Service-connected
The claim
Diabetes Mellitus, Type 2
Secondary · 38 CFR § 3.310
What the claim needs on paper
- A current diagnosis: Diabetes Mellitus, Type 2
- Your service-connected PTSD
- A medical opinion linking the two — “at least as likely as not”
The short answer
Diabetes Mellitus, Type 2 secondary to PTSD: can you claim it?
Type 2 diabetes can be claimed as secondary to service-connected PTSD under 38 C.F.R. § 3.310 when a clinician explains how PTSD or its treatment at least as likely as not caused or worsened the diabetes. The strongest version usually rests on your records: a psychiatric medication known to affect weight or blood sugar, followed by weight gain and rising A1C. If you have qualifying Agent Orange exposure, diabetes is presumptive and you don't need this route at all.
How this secondary claim works
The medical link
Sustained hypothalamic-pituitary-adrenal activation raises circulating cortisol and promotes visceral adiposity and insulin resistance, and second-generation antipsychotics and several antidepressants prescribed for the condition carry well-documented weight-gain and glucose-dysregulation effects.
What proves it
Psychiatric treatment records showing the diagnosis, its duration and the medications prescribed; HbA1c and weight trend after those medications began; nexus letter from the prescribing clinician or an endocrinologist addressing both the stress-physiology and medication pathways.
The rule VA applies
38 CFR § 3.310 covers secondary service connection two ways: a condition caused by a service-connected disability, and one aggravated by it beyond its natural progression. Either route works, and a claim can argue both. The standard is “at least as likely as not” — a 50% probability, not proof beyond doubt.
You do not need to show diabetes mellitus, type 2 began during service. That is what makes a secondary claim different, and it is the step most veterans do not realise is available to them.
How strong is this claim?
Diabetes has many causes, so VA examiners look hard at weight, family history, and age. The medication route is the more concrete one: several antipsychotics and some antidepressants carry documented weight-gain and blood-sugar effects, and a chart that shows the prescription, then the weight gain, then the diagnosis gives the clinician something specific to explain. The chronic-stress route is real in the research but harder to pin to one veteran, so it works best alongside the medication evidence rather than alone.
How VA rates diabetes mellitus, type 2
Under 38 C.F.R. § 4.119, DC 7913: 10% managed by restricted diet only; 20% requiring insulin or an oral medication plus a restricted diet; 40% adding regulation of activities; 60% and 100% for the more severe levels with hospitalizations or frequent care visits. Complications such as neuropathy are rated separately.
What the nexus letter for diabetes mellitus, type 2 secondary to PTSD must cover
- 1
The timeline in your chart
When PTSD was diagnosed and treated, which medications were prescribed and when, and your weight and A1C before and after.
- 2
The medication pathway
Which drug, what its known metabolic effects are, and how your records show those effects in you.
- 3
The stress pathway, if used
How chronic stress-hormone activation affects insulin resistance and weight, tied to the course of your PTSD.
- 4
Other risk factors addressed
Family history, weight from other causes, and age, and why PTSD or its treatment still contributed.
What this becomes
Build the documents for this claim
Tell us what's going on in your own words and we'll draft the nexus letter for your provider to review and sign, plus your personal statement and buddy statements.
Obstructive sleep apnea DC 6847
This claim needs: a nexus opinion.
- 1 · The diagnosisOn record — the VA already conceded it
- 2 · What happened, and how it affects youYour statement · daily life · a witness
- 3 · The link to your serviceReady to draft — this answers the denialDraft it →
How VA rates it — your records document the 50% level.
“Patient uses CPAP nightly, compliance 92% of nights.” — sleep study, p. 3
A demo claim, not a customer's — every claim is laid out this way. VA decides every claim.
Straight answers
Common questions
- Can diabetes be secondary to PTSD?
- It can be claimed that way under 38 C.F.R. § 3.310. The opinions that hold up usually point to a psychiatric medication with known weight or blood-sugar effects and the changes that followed in your records. VA decides whether the evidence is enough.
- Should I claim diabetes as Agent Orange instead?
- If you have qualifying herbicide exposure, yes: type 2 diabetes is presumptive under 38 C.F.R. § 3.309(e), so no nexus opinion is needed. The PTSD route is for veterans without that presumption.
- Can Diabetes Mellitus, Type 2 be service-connected as secondary to PTSD?
- It can be claimed that way. Under 38 CFR § 3.310, a condition that is proximately due to — or aggravated by — an already service-connected disability can itself be service-connected. Whether VA grants it depends on the evidence in your file, and the decision is made solely by VA adjudicators.
- What is the medical link between PTSD and Diabetes Mellitus, Type 2?
- Sustained hypothalamic-pituitary-adrenal activation raises circulating cortisol and promotes visceral adiposity and insulin resistance, and second-generation antipsychotics and several antidepressants prescribed for the condition carry well-documented weight-gain and glucose-dysregulation effects.
- What evidence do I need?
- Psychiatric treatment records showing the diagnosis, its duration and the medications prescribed; HbA1c and weight trend after those medications began; nexus letter from the prescribing clinician or an endocrinologist addressing both the stress-physiology and medication pathways.
- Do I need a nexus letter for a secondary claim?
- In most cases yes. The rater needs a medical opinion connecting the two conditions at the "at least as likely as not" (50% or greater) standard. That opinion has to come from a licensed clinician who reviews your records and signs it — a draft is a starting point for that provider, not a substitute for their judgment.
Keep going
Other conditions secondary to PTSD
Veterans rated for PTSD often have more than one of these.
Rated for more than PTSD?
Pick what you're rated for → see what commonly follows.
The free finder maps the secondary conditions that commonly follow every condition you already have — not just this one. No sign-up to look.
Start with the records you have.
Upload what you've got. We'll show you what it proves for Diabetes Mellitus, Type 2 and what to do next.
This page explains how a secondary claim works. It is not medical or legal advice, and it is not a prediction about your claim — service connection and any rating are decided solely by VA adjudicators. VA Claim Commander is not affiliated with the U.S. Department of Veterans Affairs.