
Sleep apnea is a common condition among veterans, with over 1.3 million veterans receiving disability compensation for it. To qualify for VA disability benefits, veterans must prove that their condition is service-connected, either by showing that it began during their military service or was caused or aggravated by their service. This can be done through service treatment records, medical nexus letters, and buddy statements. A nexus letter is a medical opinion linking sleep apnea to military service and is critical to winning a claim. It should state that it is at least as likely as not that sleep apnea is related to military service and should reference the veteran's medical history and service records.
| Characteristics | Values |
|---|---|
| Prevalence among veterans | 1.3 million veterans receive disability compensation for sleep apnea |
| Connection to service | Direct, secondary, or presumptive service connection |
| Direct service connection | Sleep apnea started during military service |
| Secondary service connection | Sleep apnea caused or worsened by another service-connected condition, such as PTSD, depression, respiratory issues, chronic rhinitis, asthma, a deviated septum, or diabetes mellitus type 2 |
| Presumptive service connection | VA presumes certain conditions are service-connected based on exposure to specific hazards or environmental factors during service |
| Nexus letter | A medical opinion linking sleep apnea to military service or a service-connected condition |
| Nexus letter requirements | Clearly state that it is "at least as likely as not" that sleep apnea is related to military service or a service-connected condition, explain the reasoning, and reference medical history and service records |
| Nexus letter specialist opinion | A nexus letter from a specialist, such as a sleep specialist or pulmonologist, can carry more weight than a general practitioner's opinion |
| Evidence | Service treatment records, buddy statements, sleep studies, doctor's notes, records of treatments, lay statements from family or roommates |
| Rating | 0%, 30%, 50%, or 100% benefits depending on the severity and impact on daily activities |
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What You'll Learn

The importance of a nexus letter
Sleep apnea is a common issue for veterans, with over 1.3 million veterans receiving disability compensation for the condition. It is a condition where breathing repeatedly stops and starts during sleep, leading to various health issues. Veterans can receive disability benefits from the Department of Veterans Affairs (VA) if they can prove that their sleep apnea is connected to their military service. This is where a nexus letter comes in.
A nexus letter is a document that establishes a connection between a veteran's current medical condition and their military service. The term nexus means a connection or link, and that is what the letter aims to provide – a clear, medically-supported link between a veteran's current disability and their time in service. It is a medical opinion that links sleep apnea to military service. If sleep apnea is claimed as a secondary condition (for example, caused by PTSD or a respiratory issue), a nexus letter can be critical evidence.
The nexus letter should clearly state that it is “at least as likely as not” that the veteran's sleep apnea is related to their military service or a service-connected condition. A nexus letter offers a professional medical opinion that carries significant weight with the VA. It strengthens the veteran's claim, and addresses any gaps in their medical records. The nexus letter should be written by a medical expert, such as a physician or specialist who has treated the veteran before, and ideally, the one who has treated them the longest. This is because the VA's assessment of probative value takes into account how long the veteran has been treated by that physician.
To obtain a nexus letter, veterans should choose the right medical professional – ideally, a doctor who is familiar with their medical history and understands VA regulations. They should provide their doctor with all relevant medical records, including service medical records, post-service treatment records, and any VA decision letters they have received. It is important to explain the purpose of the nexus letter to the doctor, so they understand why it is important for the veteran's VA claim.
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Proving direct service connection
Sleep apnea is a common concern for many veterans, with over half a million veterans service-connected for the condition. It is a condition where breathing repeatedly stops and starts during sleep, leading to various health issues. To qualify for VA disability benefits for sleep apnea, veterans must establish a direct service connection. This means proving that their sleep apnea either began during their military service or was caused or aggravated by their service.
To prove direct service connection, veterans must show evidence of the following:
- A current diagnosis of sleep apnea, as confirmed by a sleep study. A formal sleep study is one of the most common requirements for a successful claim. Without this official diagnosis, the VA is unlikely to grant a disability rating.
- A medical nexus letter or opinion, linking their diagnosed condition to their military service. This should state that it is "at least as likely as not" that their sleep apnea is related to their military service. A nexus letter from a specialist, such as a sleep specialist or pulmonologist, can carry more weight than a general practitioner's opinion.
- Service treatment records, buddy statements, and lay evidence of sleep-breathing problems during their period of service can also help to prove direct service connection. Family members or roommates can describe how they noticed symptoms such as loud snoring, gasping for air during sleep, or daytime fatigue. These observations can support a claim, especially if they describe symptoms that occurred during or immediately after service.
Veterans can also prove direct service connection by showing that their sleep apnea symptoms manifested within one year of discharge from service. This is known as the "presumptive period". If sleep apnea symptoms appear within this time frame, it is presumed that the condition was incurred during service.
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Proving secondary service connection
Sleep apnea is a common condition among veterans, with over half a million veterans service-connected for the condition. It is a concern for those who have served in the military as the stresses and physical demands of service can often exacerbate or contribute to this condition.
To qualify for VA disability benefits for sleep apnea, you must establish that your condition is service-connected. This means proving that your sleep apnea either began during your military service or was caused or aggravated by your time in service.
To prove secondary service connection, you must provide a medical nexus opinion linking your current secondary condition to your already service-connected disability. This nexus letter is a medical opinion that links your sleep apnea to your military service. It should state that it is “at least as likely as not” that your sleep apnea is related to a service-connected condition. Your doctor should explain the reasoning behind their opinion and reference your medical history and service records.
A nexus letter from a specialist, such as a sleep specialist or pulmonologist, can carry more weight than a general practitioner's opinion, especially in complex cases. For example, a veteran with service-connected PTSD who developed sleep apnea may submit a nexus letter from a sleep specialist explaining how PTSD contributes to the development or worsening of sleep apnea by causing fragmented sleep.
Veterans diagnosed with service-connected sleep apnea who require the use of a CPAP (Continuous Positive Airway Pressure) machine are generally assigned a 50% disability rating. This rating reflects the impact of sleep apnea on a veteran's daily life and health.
Comprehensive Medical Evidence:
This includes sleep studies, doctor's notes, and records of treatments for OSA and any linked conditions. It is important to provide evidence of how your condition affects your ability to function in daily activities and at work. Family members or roommates can describe how they have noticed symptoms such as loud snoring, gasping for air during sleep, or excessive daytime fatigue.
Establish the Connection Between Your Service and OSA:
Provide treatment records of any sleep problems, buddy statements that corroborate snoring or breathing issues during sleep while in service, and any other evidence that can show symptoms manifested or worsened during active duty.
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Qualifying for VA disability benefits
Sleep apnea is a common condition among veterans, with over 1.3 million veterans receiving disability compensation. Veterans are more prone to sleep apnea due to the physical demands and stress of military service, as well as associated health conditions like PTSD and respiratory issues.
To qualify for VA disability benefits, veterans must prove that their sleep apnea is service-connected. This can be done through a direct or secondary service connection.
A direct service connection means showing that sleep apnea began during military service. This can be demonstrated through service treatment records, medical nexus letters, and buddy statements. For example, if a veteran was diagnosed with sleep apnea while in service or experienced symptoms during service that were later diagnosed as sleep apnea.
A secondary service connection means establishing that sleep apnea is caused or worsened by another service-connected condition, such as PTSD, depression, respiratory issues, chronic rhinitis, asthma, or a deviated septum. In this case, a medical nexus letter is critical to linking the two conditions. This letter should state that it is “at least as likely as not” that sleep apnea is related to military service or a service-connected condition, and it carries more weight if it's from a specialist like a sleep specialist or pulmonologist.
Additionally, family members or roommates can provide statements describing symptoms like loud snoring, gasping for air during sleep, and excessive daytime fatigue. These observations can help establish that symptoms began during or shortly after service.
Under the VA Ratings Schedule, veterans with sleep apnea may receive a 0%, 30%, 50%, or 100% disability rating. A 50% rating is common when a CPAP machine is required, and a 100% rating is given for severe cases with complications like heart issues. Recent proposals suggest that veterans whose symptoms are well-managed with treatment may receive a 0% rating, while those with persistent symptoms despite treatment could qualify for higher ratings.
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The role of medical professionals
Medical professionals play a crucial role in helping veterans establish a nexus between their sleep apnea and their military service. This nexus is essential for veterans to receive disability benefits from the Department of Veterans Affairs (VA). Here is a detailed overview of the role of medical professionals in this process:
Diagnosis and Treatment Records: Medical professionals diagnose and treat sleep apnea, generating records that can serve as evidence of the condition. Service treatment records and military medical records can help establish that sleep apnea symptoms manifested during active duty service. These records can include sleep studies, doctor's notes, and treatment records for sleep apnea and any linked conditions.
Nexus Letters: One of the most critical roles of medical professionals is providing nexus letters. These letters are written opinions from medical experts that establish a link between a veteran's sleep apnea and their military service or a service-connected condition. Nexus letters should state that it is “at least as likely as not” that sleep apnea is related to military service or a service-connected condition. The medical expert should provide a rationale by referencing scientific literature, personal medical records, military records, and other relevant documents. For example, a nexus letter might explain how PTSD contributes to sleep apnea by causing fragmented sleep patterns.
Specialist Opinions: Opinions from specialists, such as sleep specialists or pulmonologists, can carry more weight in complex cases. For instance, a nexus letter from a sleep specialist could explain how PTSD contributes to the development or worsening of sleep apnea.
Establishing Secondary Service Connection: Medical professionals can help establish secondary service connection by linking sleep apnea to a service-connected primary condition. For example, a veteran with service-connected obesity due to mental health conditions or physical injuries acquired during military service can obtain secondary service connection for sleep apnea since obesity is associated with the development of obstructive sleep apnea.
Assessing Severity and Impact: Medical professionals also play a role in assessing the severity and impact of sleep apnea on a veteran's daily life and health. This evaluation is crucial in determining the disability rating assigned to the veteran, which can range from 0% to 100%. A higher rating reflects a more significant impact on the veteran's life and health.
In summary, medical professionals are instrumental in diagnosing, treating, and establishing the nexus for sleep apnea in veterans. Their opinions and records are vital evidence for veterans seeking disability benefits from the VA. Working closely with medical experts ensures that veterans can provide the necessary documentation to support their claims and receive the benefits they deserve.
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Frequently asked questions
A nexus letter is a medical opinion that links sleep apnea to military service. It should state that it is "at least as likely as not" that sleep apnea is related to military service.
A nexus to sleep apnea and military service can be constituted by providing military medical records, performance records, and other evidence recorded during service that shows sleep apnea started during military service.
To prove a direct service connection, veterans must show evidence of a current diagnosis of their condition, as confirmed by a sleep study, and a medical nexus, or link, between their diagnosed condition and an in-service event, injury, or illness.
To prove a secondary service connection, veterans must provide a medical nexus opinion linking their current secondary condition to their already-service-connected disability.
A veteran with sleep apnea may be entitled to 0%, 30%, 50%, or 100% benefits. A 50% rating is given to veterans who require the use of a CPAP machine, which currently entitles them to $1,102.04/month in compensation, in addition to healthcare services related to the condition.

























