Sleep apnea is one of the most-claimed secondary conditions in the VA system — most often discussed as secondary to service-connected PTSD, but also to weight gain from psychiatric medication, or to nasal and sinus conditions. Under 38 CFR 3.310, if a service-connected condition caused or aggravated your sleep apnea, the sleep apnea can be service-connected too — but only with a sleep-study diagnosis and a medical nexus tying it to the primary.
Straight talk first
Sleep apnea is the secondary I get asked about more than any other, and for good reason — a lot of veterans have it, and a lot of them have a service-connected condition it could plausibly trace to. But here's where guys go wrong: they assume "PTSD + sleep apnea = automatic secondary." It isn't. VA doesn't connect conditions because they sound related; it connects them when a medical opinion says one caused or worsened the other. So the work isn't claiming it — it's documenting it.
This page is the sleep-apnea-specific version of the framework on VA secondary conditions.
The links veterans commonly pursue
These are the connections that come up most — each is a starting point to investigate with a provider, not a guaranteed grant:
- Sleep apnea secondary to PTSD or another mental health condition — the most common pairing, with several discussed mechanisms (disrupted sleep architecture, medication effects, weight gain).
- Sleep apnea secondary to weight gain driven by a service-connected condition or its medications.
- Sleep apnea secondary to a nasal/sinus condition (e.g., chronic rhinitis or a deviated septum from a service injury) that obstructs the airway.
Which one fits — if any — depends on your records and a medical opinion. Use the Secondary Conditions Finder to see how your service-connected condition commonly links, then talk it through with a provider.
What you have to prove (38 CFR 3.310)
Three pieces, same as any secondary claim — aimed at the link:
- A current diagnosis of sleep apnea, confirmed by a sleep study (polysomnography). A CPAP prescription alone usually isn't enough.
- An already service-connected primary condition (e.g., PTSD).
- A medical nexus opinion stating the primary "at least as likely as not" caused or aggravated the sleep apnea.
Remember that aggravation counts too — if a service-connected condition permanently worsened a sleep apnea you'd otherwise have, that's covered by 3.310, and VA compensates the degree of worsening over baseline.
How to strengthen the link
- Get the sleep study done and in your file.
- Ask your provider for an opinion that explains the mechanism — why the primary caused or aggravated the apnea — not just a one-line "they're related."
- Pull together supporting evidence: treatment records, a medication history (for the weight-gain pathway), and statements describing the timeline.
The mechanics of building and submitting that evidence are in how to file your own claim.
What it can do to your combined rating
Sleep apnea has its own rating criteria under 38 CFR 4.97, Diagnostic Code 6847. Once it's service-connected, that rating doesn't simply add to your existing percentage — it combines using VA math. Run the result through the VA Combined Rating Calculator to see how it would actually move your number.
Key takeaways
- Sleep apnea is most commonly claimed secondary to PTSD, but the link must be shown, not assumed.
- You generally need a sleep-study diagnosis, a service-connected primary, and a medical nexus (38 CFR 3.310).
- Aggravation of pre-existing sleep apnea by a service-connected condition counts too.
- A new sleep apnea rating combines with your others — use the calculator to see the real effect.
Frequently asked questions
- Can I claim sleep apnea as secondary to PTSD?
- Many veterans do. It's one of the most commonly discussed secondary links. Under 38 CFR 3.310 you'd need a current sleep apnea diagnosis (confirmed by a sleep study), an already service-connected primary like PTSD, and a medical nexus opinion connecting the two. The opinion is what carries the claim.
- Do I need a sleep study to claim sleep apnea?
- Effectively yes. VA generally wants sleep apnea confirmed by a sleep study (polysomnography), not just symptoms or a CPAP prescription. The diagnosis is the foundation — without it there's nothing to service-connect.
- What's the medical link between PTSD and sleep apnea?
- Researchers have discussed several possible mechanisms — disrupted sleep, the effects of psychiatric medications, and weight gain among them. Treat that as a starting point to explore with a provider, not a guarantee; your records and a medical opinion decide whether the link holds in your case.
- How is sleep apnea rated?
- Sleep apnea has its own rating criteria under VA's respiratory schedule (38 CFR 4.97, Diagnostic Code 6847), which turn on how the condition is treated and its severity. Once service-connected, that rating combines with your others using VA math.
Sources
- 38 CFR 3.310 — secondary service connection (caused or aggravated): https://www.ecfr.gov/current/title-38/chapter-I/part-3/subpart-A/section-3.310
- 38 CFR 4.97 — schedule of ratings, respiratory system (incl. Diagnostic Code 6847, sleep apnea): https://www.law.cornell.edu/cfr/text/38/4.97
- VA — how VA decides service connection: https://www.va.gov/disability/eligibility/
