How Do I Prove My Sleep Apnea is Secondary to PTSD and Get a VA Rating?

For veterans with both sleep apnea and PTSD, sleep apnea can be service connected as a secondary condition, with its own rating (0%, 30%, 50% or 100%) and monthly compensation, when the evidence shows the PTSD caused or aggravated it. You do not have to prove that the apnea started during service, only that the service-connected PTSD brought it on or made it worse.

• PTSD raises sleep apnea risk through sleep fragmentation and hyperarousal, the weight-gain and airway effects of PTSD medications, and CPAP intolerance that leaves the apnea undertreated.
• The VA rates sleep apnea 0%, 30%, 50%, or 100% under Diagnostic Code 6847, most commonly 50% when a CPAP machine is required.
• A winning claim needs three things: a sleep study confirming the diagnosis, an already service-connected PTSD rating, and a nexus letter linking the two.
• A combined PTSD and sleep apnea rating can raise a veteran’s overall rating and may support Total Disability based on Individual Unemployability (TDIU).

A Columbia University study of Vietnam-era veterans found that about 33% of those with PTSD also had sleep apnea. If you’re one of them, the Hill & Ponton free book The Road to VA Compensation Benefits can help you claim VA disability for both disabilities.

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VA Disability Ratings for Sleep Apnea and PTSD

Under the VA rules, separate evaluations are combined when sleep apnea is granted secondary to service-connected PTSD, and both conditions receive separate ratings.

PTSD (DC 9411) is rated at 0%, 10%, 30%, 50%, 70%, or 100%, using the same criteria as other mental health conditions under 38 CFR § 4.130. The rating depends on the severity and frequency of symptoms and is heavily focused on their impact on social and occupational functioning.

Sleep apnea (DC 6847) is rated at 0%, 30%, 50%, or 100% under 38 CFR § 4.97. A 50% rating is often assigned when a CPAP device is required for treatment.

Rating	Criteria (DC 6847, Sleep Apnea Syndromes: Obstructive, Central, Mixed)
100%	Chronic respiratory failure with carbon dioxide retention or cor pulmonale, or requires tracheostomy
50%	Requires use of a breathing assistance device such as a continuous positive airway pressure (CPAP) machine
30%	Persistent daytime hypersomnolence
0%	Asymptomatic but with documented sleep disorder breathing

For the overall rating, the VA uses a combined rating formula to evaluate how each condition impacts overall functioning. Use Hill & Ponton’s online VA disability calculator to calculate the overall rating.

What Is the Connection Between Sleep Apnea and PTSD in Veterans?

Obstructive sleep apnea (OSA) occurs when the airway becomes blocked, disrupting normal air flow and breathing patterns throughout the night. It is often rated as a secondary condition, caused or aggravated by service-related disabilities like depression, chronic pain, heart disease, traumatic brain injuries, or PTSD.

A 2022 meta-analysis in the Journal of Clinical Medicine found obstructive sleep apnea in as many as 75.7% of the PTSD patients studied (based on an apnea-hypopnea index of 5 or more), far above the roughly 13% seen in the general male population.

The Impact of PTSD on Sleep Apnea

PTSD and sleep apnea are intricately connected and can influence each other over time. Symptoms linked to PTSD, along with related physical and behavioral changes, may increase the risk of developing or worsening sleep apnea. This interaction can create an ongoing cycle of disrupted sleep and declining overall health.

PTSD does not directly block the airway in sleep apnea. Instead, this occurs over time in response to PTSD symptoms (including ongoing stress and behavior changes).

PTSD may not be the primary cause of a veteran’s sleep apnea, but when service-connected PTSD worsens nighttime breathing, sleep apnea may be considered a secondary service-connected condition.

This includes sleep apnea that began before PTSD was service connected. Under 38 C.F.R. § 3.310(b) and Allen v. Brown, a veteran can be compensated when service-connected PTSD aggravates a pre-existing case of sleep apnea beyond its natural progression.

What PTSD-related Factors Contribute to Sleep Apnea?

• Activation of the fight-or-flight response triggers frequent, fragmented awakenings from chronic stress
• Insomnia – caused by disrupted, shallow sleep due to hyperarousal (a constant state of alertness) destabilizes breathing patterns
• Stress response increases muscle tension, which affects airway stability
• Weight gain, linked to stress or medication, causes physical changes such as tightened airway muscles
• PTSD coping habits (such as alcohol use) relax the throat muscles

This overlap of sleep apnea and PTSD, medically coined co-occurring disorders (when two medical conditions occur alongside each other), is particularly significant in veterans.

Severe PTSD symptoms in veterans often put stressors on the body that cause or worsen breathing pauses (the primary symptom of sleep apnea) during sleep. These stressors may result from:

• Severe nightmares
• PTSD-related migraines
• Chronic anxiety

How Do I Prove a VA Claim of Sleep Apnea Secondary to PTSD?

A secondary sleep apnea claim does not require veterans to prove their sleep disorder occurred as a direct result of military service. Instead, the claim is for compensation due to PTSD causing or worsening sleep apnea.

Essential Evidence

• An established service-connected PTSD disability rating
• A confirmed, current sleep apnea diagnosis conducted by a qualified provider (preferably a licensed mental health provider)
• Medical documentation that includes polysomnogram (sleep study) results showing the presence, type, and severity of sleep apnea
• Medical treatment and history records – clinical documentation showing a timeline of symptoms and treatment for each condition (sleep apnea and PTSD), including documentation on when sleep problems began in relation to PTSD symptoms.
• List of PTSD medications – including specific meds and side effects, especially SSRIs and certain antipsychotics, which can lead to weight gain and lower energy levels. These drugs may increase appetite or cause fatigue, reducing the likelihood of physical activity. Over time, these changes can increase the risk of sleep apnea.
• Lay (“buddy”) statements – spouse, roommate, family member, or friend statements describing the observation of symptoms such as insomnia, nightmares, use of CPAP, choking, gasping, or other sleep disturbance observations documented on a VA Form 21-10210.
• A personal statement describing when the symptoms of sleep problems started, how certain PTSD symptoms adversely impact sleep, and how symptoms worsened over time.
• A nexus (medical opinion) letter from a qualified provider stating the sleep apnea is “at least as likely as not” caused or worsened by service-connected PTSD (a strong letter includes the components below).

What Should the Nexus Letter Include?

1. A summary of the veteran’s medical history
2. A list of medical records reviewed (such as medication orders, hospital records, diagnostic assessments, etc.)
3. A detailed medical explanation for why the provider believes PTSD caused or aggravated the sleep apnea
4. A rebuttal concerning why risk factors or disorders other than PTSD fully explain the link to sleep apnea
5. A list of PTSD medications/side effects and how they contribute to sleep apnea
6. A statement on whether PTSD led to chronic sleep impairment or weight changes from PTSD medications or other PTSD related factors that contributed to apnea sleep

What Does a Winning VA Claim Look Like?

1. Undergo a sleep study
2. Ensure your PTSD is already service connected
3. Obtain a strong nexus letter from a licensed provider
4. Show documented evidence of symptoms with statements and medical records
5. Prepare in advance for the C&P exam

A VA claim for sleep apnea secondary to PTSD is often the strongest when you clearly show a specific chain of events: PTSD is service-connected → sleep apnea is diagnosed → a qualified, licensed provider explains how PTSD caused or worsened sleep apnea.

What Makes These Claims Challenging to Win?

Oftentimes, veterans get denied due to the VA claiming that sleep apnea is linked with certain lifestyle and health factors, such as:

• Weight gain or obesity
• Abnormal airway anatomy (such as a narrow or collapsible airway, obstructions from a large tongue or enlarged tonsils, or a small jaw)
• Age (causing weakening of the muscles that keep the upper airway open)
• Smoking (induces inflammation and swelling, narrowing the upper airway)
• Alcohol use (acts as a muscle relaxant, allowing throat tissues to collapse)
• Nasal obstruction (forces mouth breathing, increasing negative pressure, which causes the throat to tighten or close)
• Other health conditions

Because sleep apnea can have many causes, strong medical evidence is needed to directly link it to PTSD. An effective nexus opinion makes that link explicit with specific, reasoned statements such as:

• PTSD symptoms (such as hyperarousal) directly aggravated sleep apnea by causing chronic sleep disruption.
• PTSD resulted in reduced physical activity, which led to weight gain, contributing to the risk of OSA or worsening sleep apnea.
• PTSD medication side effects contributed to sleep apnea by causing weight gain.
• PTSD symptoms (such as hyperarousal, severe nightmares, or migraines) exacerbated (worsened) existing sleep apnea or increased the risk of developing OSA.
• PTSD-related CPAP intolerance (claustrophobia, panic, or flashbacks triggered by the mask) left the sleep apnea undertreated and worsened its severity; veterans with PTSD use CPAP far less consistently than others (41% versus 70% adherence in one VA study).

The C&P Exam

A Compensation and Pension (C&P) exam is a free medical evaluation that the VA orders to discover whether a veteran’s disability is service connected (linked to military service) and to evaluate its severity for rating purposes. Missing the C&P exam often results in an automatic denial of the veteran’s disability claim.

What Is the C&P Exam for Sleep Apnea Secondary to PTSD?

The C&P exam for sleep apnea secondary to PTSD is usually focused on two specific categories, including qualifications for a sleep apnea diagnosis, and whether the PTSD caused or worsened sleep apnea; specific questions may include:

1. Does a veteran qualify for a sleep apnea diagnosis?
2. Is it at least as likely as not that PTSD caused or worsened sleep apnea?
3. When was the veteran diagnosed?
4. Did the veteran have a sleep study?
5. What were the veteran’s symptoms (snoring, choking, gasping, daytime sleepiness, cognitive impairments, etc.) before diagnosis?
6. Does the veteran use a CPAP or receive other treatment?
7. What are the veteran’s PTSD symptoms (nightmares, anxiety, panic, poor sleep, or hypervigilance)?
8. What is the veteran’s weight history?
9. What medications does the veteran currently take?
10. What is the level of alcohol, tobacco use, or other risk factors?

How to Prepare for the C&P exam

Veterans preparing for a C&P exam should be direct and specific in answering the examiner’s questions and refrain from exaggerating or minimizing issues. Helpful points to explain:

• When sleep problems started or worsened
• How PTSD symptoms affect/interfere with sleep (provide a sleep journal if possible)
• Whether PTSD medications disrupted sleep or increased weight
• Snoring, choking, or breathing pauses noticed by a spouse or partner
• Level of daytime fatigue
• Frequency of CPAP use, if applicable

Items to bring to the exam (to ensure they are considered if mistakenly not in the records) include:

• Sleep study results
• Current sleep apnea diagnosis
• CPAP prescription, if applicable
• Medical opinions from other providers (such as the veteran’s personal physician)
• Family and friend statements

A unique, diagnosis-based Disability Benefits Questionnaire (DBQ) form is completed based on the examiner’s findings. The results of the C&P exam are used to determine approvals or denials and to assign a rating percentage.

Why Did the VA Deny My Claim for Sleep Apnea Secondary to PTSD?

A denial usually means the evidence was insufficient, or the link to service-connected PTSD was not properly established in the claim. Some of the most common reasons secondary sleep apnea claims get denied include:

• Missing record of sleep study results
• The medical records lack sufficient evidence of a sleep apnea diagnosis because it lacks essential signs, symptoms, and treatment (the use of a CPAP, loud snoring, gasping for air, excessive daytime drowsiness (hypersomnolence), morning headaches, and cognitive impairment)
• The nexus opinion is weak or missing from the medical records
• The examiner claims that PTSD and sleep apnea are unrelated
• The examiner deems that sleep apnea is caused by risk factors other than PTSD due to the lack of evidence showing that PTSD caused or worsened sleep apnea

Identifying the Reason for the Denial

When a claim is denied, it’s essential to carefully read the denial to find the weakness identified by the examiner, such as:

• No medical nexus (link) between PTSD and sleep apnea
• Sleep apnea was not incurred or caused by military service
• Sleep apnea is more likely due to obesity or other risk factors
• No documented evidence of PTSD aggravating sleep apnea

What to Do Next

1. Consult a licensed provider whose expertise is in the respiratory or mental health field and obtain an independent medical opinion that directly addresses the reason for denial. Examples include:
2. If the VA finds that obesity caused the apnea, ask the independent provider to write a statement explaining whether PTSD or PTSD medication contributed to weight gain, inactivity, or worsening sleep apnea.
3. If the VA says there is no medical link (nexus), get a detailed medical opinion that thoroughly explains the role of PTSD in causing or worsening sleep apnea.
4. If VA did not address spousal or buddy observations, submit a stronger lay statement with specific details like the frequency and severity of choking, loud snoring, and daytime exhaustion. A symptoms timeline with dates provides the best layperson’s evidence.
5. Review the denial statement to find out whether the examiner overlooked essential evidence, including:
6. The sleep study results
7. CPAP prescription
8. PTSD medications
9. Weight changes after PTSD symptoms worsened
10. Statements from your spouse or roommate