Sleep Apnea Secondary to PTSD

Overview

Obstructive sleep apnea (OSA) is a condition in which the upper airway repeatedly narrows or collapses during sleep, interrupting breathing and fragmenting sleep. It is common in veterans with PTSD, and it is often claimed as secondary to PTSD. It is also a condition with strong risk factors of its own, including excess weight, age, male sex, and airway anatomy. VA examiners will weigh those.

That makes this a claim where the quality of the medical opinion decides the outcome. There is no presumption. An opinion that says only “PTSD and sleep apnea often occur together” is usually not enough. An opinion that traces a documented pathway in your records, with causation and aggravation addressed separately, is.

VA rates sleep apnea under Diagnostic Code 6847. It is a respiratory rating, separate from the mental-health rating for PTSD, so a grant combines with your PTSD rating.

What the Research Shows About PTSD and Sleep Apnea

• High prevalence in PTSD. A 2017 meta-analysis of 12 studies (Zhang et al., Sleep Medicine) estimated OSA prevalence in PTSD at 75.7% using an AHI of 5 or more, and 43.6% using an AHI of 10 or more. The confidence intervals were very wide, and rates were significantly different in veterans than in non-veteran samples. People with both PTSD and OSA also used CPAP significantly less than people with OSA alone.
• Younger veterans. In a 2015 study of 159 Iraq and Afghanistan-era veterans with PTSD (Colvonen et al., Journal of Clinical Sleep Medicine), 69.2% screened as high risk for OSA. Higher PTSD severity was associated with higher risk, and the authors noted that these younger veterans may not show classic OSA predictors such as older age and higher BMI. This was a screening questionnaire, not a sleep-study diagnosis.
• What this does and does not prove. These studies show that OSA is common in PTSD. They do not establish that PTSD causes OSA in a particular person. The proposed biological mechanisms, including sleep fragmentation, arousal, and stress-hormone effects, are still being studied.

Theories That Hold Up Best

1. Medication-related weight gain (intermediate step). Some psychiatric medications, such as certain antipsychotics (for example, quetiapine) and mirtazapine, are known to cause weight gain. Weight gain is a major OSA risk factor. VA’s General Counsel (VAOPGCPREC 1-2017) held that obesity can be an intermediate step between a service-connected condition and a secondary one. The adjudicator must find three things: (1) the service-connected condition, or its treatment, caused the weight gain; (2) the weight gain was a substantial factor in causing the sleep apnea; and (3) the sleep apnea would not have occurred without it. Weight records before and after the medication, and the prescription dates, are the key evidence.
2. Aggravation. If you already had OSA, the question is whether PTSD, or its treatment, worsened it beyond natural progress. One example is PTSD-related sedative use. Another is PTSD symptoms that prevent effective CPAP use, which the Zhang meta-analysis found is common. Aggravation requires evidence of the baseline severity, such as an earlier sleep study.
3. Direct PTSD-to-OSA causation. This theory is supported by association studies but is the hardest to prove in an individual case. It needs a specialist’s reasoned explanation, not a generic statement.

How VA Decides the Claim

• Causation (38 CFR 3.310(a)) and aggravation (38 CFR 3.310(b)) are separate questions. An examiner who addresses only causation has given an inadequate opinion (El-Amin v. Shinseki, 26 Vet. App. 136 (2013)). If a negative opinion skips aggravation or the intermediate-step theory you raised, point that out in a Higher-Level Review or Supplemental Claim.
• VA must consider every theory reasonably raised. If you believe your OSA began in service, raise direct service connection as well.

Evidence Requirements

• Sleep study diagnosis of OSA, with the apnea-hypopnea index (AHI).
• Service-connected PTSD. Your rating decision.
• Medication history with start dates, and weight history before and after, if you are using the weight-gain theory.
• A medical opinion from a sleep medicine physician, pulmonologist, or psychiatrist. It should address causation and aggravation separately, apply the facts in your records, and deal with other risk factors instead of ignoring them.
• CPAP prescription and usage data, which are relevant to the 50% level.
• Lay statements from a bed partner describing snoring, gasping, or breathing pauses, and when they began.

Rating Criteria for Sleep Apnea

Sleep apnea is rated under DC 6847 (38 CFR 4.97). These are the current criteria:

0% Rating

Asymptomatic but with documented sleep disorder breathing.

30% Rating

Persistent daytime hypersomnolence.

Monthly compensation at 30% (single veteran, no dependents, 2026): $552.47

50% Rating

Requires use of a breathing assistance device such as a continuous airway pressure (CPAP) machine.

Monthly compensation at 50% (single veteran, no dependents, 2026): $1,132.90

100% Rating

Chronic respiratory failure with carbon dioxide retention or cor pulmonale, or requires tracheostomy.

Proposed change. VA has proposed replacing these criteria with a system based on treatment effectiveness. It is only a proposal and has not taken effect. See our update on the proposed sleep apnea rating changes.

How to File This Secondary Claim

1. Get a sleep study if you do not have a diagnosis. Ask your VA or private clinician.
2. Confirm PTSD is service connected.
3. Gather the facts that support your theory, especially medication start dates and weight records.
4. Get a medical opinion that applies those facts and addresses causation and aggravation separately.
5. File VA Form 21-526EZ on VA.gov, listing sleep apnea as secondary to PTSD, and upload your evidence with the claim.
6. Attend the C&P exam.

C&P Exam Tips

• Bring your CPAP usage data or a printout from your device or supplier, along with your sleep study report.
• Describe your symptoms accurately: daytime sleepiness, morning headaches, concentration problems, witnessed breathing pauses, and how often each happens.
• Explain the timeline: when PTSD treatment started, which medications, when your weight changed, and when snoring or apnea symptoms were first noticed.
• Describe typical days and bad days, and say which is which. Accuracy is more persuasive than broad statements.

Impact on Combined Rating

VA combines ratings with the 38 CFR 4.25 combined ratings table.

Example: PTSD 70% + sleep apnea 50%

1. 70% combined with 50% = 85
2. 85 rounds up to 90%

At 2026 rates, a single veteran with no dependents goes from $1,808.45 per month at 70% to $2,362.30 per month at 90%.

If you have other rated conditions, use our VA disability calculator to see how adding sleep apnea would affect your combined rating. For related sleep problems, see insomnia secondary to PTSD.

For personalized guidance on your VA disability claim, consult a VA-accredited VSO, attorney, or claims agent.