Sleep apnea is one of the most commonly claimed VA secondary conditions — and for good reason. Research consistently shows that veterans with PTSD are significantly more likely to develop obstructive sleep apnea. If you already have a service-connected PTSD rating, you may be leaving hundreds of dollars per month on the table by not also claiming sleep apnea.
This guide walks you through exactly how the VA rates sleep apnea, what the connection to PTSD looks like in the VA's eyes, and what you need to file a winning claim.
A 50% sleep apnea rating is worth $1,133.68/month on its own (veteran alone, 2026 rate). Combined with a PTSD rating, your total monthly pay could increase significantly.
How the VA Rates Sleep Apnea
The VA rates sleep apnea under Diagnostic Code 6847. The rating levels are straightforward compared to many other conditions:
| Rating | Criteria | Monthly Pay (Alone, 2026) |
|---|---|---|
| 100% | Chronic respiratory failure with carbon dioxide retention, cor pulmonale, or requires tracheostomy | $3,938.58 |
| 50% | Requires use of breathing assistance device such as CPAP machine | $1,133.68 |
| 30% | Persistent daytime hypersomnolence (excessive sleepiness) | $553.31 |
| 0% | Asymptomatic but with documented sleep disorder breathing | $0 (but service connection established) |
The most important thing to notice: if your doctor has prescribed a CPAP machine, you are automatically eligible for the 50% rating. This is the most common sleep apnea award and it's worth $1,133.68 per month as a standalone rating.
The PTSD-Sleep Apnea Connection
To claim sleep apnea as secondary to PTSD, you need to establish a medical nexus — a documented link showing your PTSD caused or contributed to your sleep apnea. The good news is that this connection is well-established in medical literature, which makes it one of the stronger secondary claims you can file.
Here's why the connection is medically sound:
- PTSD disrupts sleep architecture, which can trigger or worsen sleep-disordered breathing
- Hyperarousal from PTSD keeps the nervous system in a heightened state during sleep
- Veterans with PTSD are 69% more likely to develop sleep apnea according to VA research
- Many veterans develop sleep apnea years after PTSD onset — the timing actually supports the secondary claim
What You Need to File This Claim
1. An Existing Service-Connected PTSD Rating
You must already have PTSD rated as service-connected. If you don't yet have a PTSD rating, file for both at the same time and ask for sleep apnea as an alternative secondary condition.
2. A Sleep Study (Polysomnogram)
You need a formal diagnosis of sleep apnea, not just symptoms. Get a sleep study done — through the VA or a private doctor. The VA will not rate sleep apnea without an official diagnosis backed by a sleep study.
3. A Nexus Letter
This is the most important document. A nexus letter is a statement from a doctor — private or VA — that says your sleep apnea is "at least as likely as not" caused or aggravated by your service-connected PTSD. That phrase "at least as likely as not" is the VA's legal standard. It doesn't mean the doctor is certain — just that it's more likely true than not (50/50 or better).
VA examiners sometimes deny the PTSD-sleep apnea nexus, claiming insufficient evidence. A strong private nexus letter from a physician who specializes in sleep medicine or psychiatry dramatically improves your odds. Don't rely solely on a VA C&P exam for this.
4. Your Personal Statement
Write a personal statement (VA Form 21-4138) describing how your PTSD affects your sleep — nightmares, hypervigilance at night, inability to relax, waking in a panicked state. This establishes the symptom timeline and supports the nexus.
How Much Can You Earn With Both Ratings?
Let's look at a realistic example. Say you currently have a 70% PTSD rating and you add a 50% sleep apnea secondary claim. Using VA math:
| Scenario | Combined Rating | Monthly Pay (Veteran Alone) |
|---|---|---|
| PTSD 70% only | 70% | $1,808.45 |
| PTSD 70% + Sleep Apnea 50% | 85% → rounded to 90% | $2,362.30 |
| Difference | +20% | +$553.85/month |
That's an extra $6,646 per year — tax-free — just from adding one secondary condition you may already have.
Common Reasons Claims Get Denied (and How to Fight Back)
- No nexus letter: The VA denies because there's no medical opinion linking the conditions. Solution: get a private nexus letter before filing.
- Weight cited as the cause: VA examiners sometimes attribute sleep apnea to obesity rather than PTSD. Counter this by having your doctor explicitly address weight as a factor and explain why PTSD is the primary cause.
- No sleep study on file: You cannot win this claim without a formal diagnosis. Get the sleep study first.
Filing Your Claim
File your supplemental claim or new claim at VA.gov/disability or through a VSO (Veterans Service Organization) like the DAV or VFW. When filing, explicitly state: "Obstructive sleep apnea, secondary to service-connected PTSD." Include your sleep study results, nexus letter, and personal statement in the same submission.
Calculate Your Combined Rating
Use our free tool to see exactly what your combined rating and monthly pay would be after adding sleep apnea.
Open Combined Rating Calculator →Bottom Line
If you have service-connected PTSD and you've been diagnosed with sleep apnea — especially if you're using a CPAP — you almost certainly have a strong secondary claim. The 50% rating is well-established, the nexus is medically supported, and the monthly pay increase can be substantial. Don't leave that money unclaimed.