VA Sleep Apnea Rating: How 38 CFR § 4.97 DC 6847 Determines Your Disability Percentage

Sleep apnea is one of the most commonly claimed VA disabilities in the country, and it is also one of the most misunderstood. Veterans get denied, underrated, or just plain confused because they do not know how the VA actually evaluates this condition. This post breaks down exactly how the VA rates sleep apnea under 38 CFR Part 4, Diagnostic Code 6847 — and what you need to do to get the rating you earned.

What Is Diagnostic Code 6847?

Under 38 CFR § 4.97, the VA rates respiratory conditions using a schedule of diagnostic codes. Sleep apnea syndromes — obstructive, central, and mixed types — fall under Diagnostic Code 6847. The rating levels are:

• 0% — Asymptomatic but with documented sleep disorder breathing, or requires no treatment
• 30% — Persistent daytime hypersomnolence (excessive daytime sleepiness)
• 50% — Requires use of a breathing assistance device such as a CPAP machine
• 100% — Chronic respiratory failure with carbon dioxide retention, cor pulmonale, or requires tracheostomy

The 50% rating is the most common outcome for veterans who use a CPAP or BiPAP machine. If you have been prescribed one and are using it, that alone meets the criteria for a 50% rating. Do not let the VA rate you at 30% when your treatment clearly qualifies you for 50%.

How to Establish Service Connection

Before the VA can rate your sleep apnea, you have to prove it is connected to your military service. There are three main paths:

Direct service connection requires a current diagnosis, an in-service event or condition, and a medical nexus linking the two. Documented fatigue complaints in your service treatment records or a sleep study conducted while on active duty can support a direct connection.

Secondary service connection is often the stronger path. PTSD is well-documented in medical literature as a condition that disrupts sleep architecture and contributes to obstructive sleep apnea. Obesity secondary to a service-connected orthopedic condition is another common pathway. You can read more about how secondary conditions work and how to build that type of claim.

Aggravation under 38 CFR § 3.310(b) applies if your military service worsened a pre-existing sleep disorder beyond its natural progression.

The Evidence You Need

A sleep apnea claim lives or dies on documentation. Here is what to gather:

• Sleep study results (polysomnography) — This is your diagnosis. Without it, you have no claim.
• CPAP/BiPAP prescription and compliance records — Document your device use. Some CPAP machines generate compliance data that can be printed and submitted.
• Nexus letter — A physician needs to provide a written opinion connecting your sleep apnea to your service or to another service-connected condition. The opinion must state it is "at least as likely as not" that the condition is related to service.
• Service treatment records — Look for any documented complaints of fatigue, snoring, or sleep disturbances during service.

If you are unsure how to pull together the right evidence or work with a physician on a nexus letter, the Win Your VA Disability Claim guide walks through the full evidence-building process in detail.

Common Mistakes That Cost Veterans Money

1. Filing without a sleep study. You cannot get a rating for a condition you have not been formally diagnosed with.
2. Not documenting CPAP use. If you use a CPAP and do not specifically document it, you may get rated at 30% instead of 50%.
3. Skipping the nexus letter. The VA is not going to connect the dots for you. You need a physician to make that connection in writing.
4. Missing secondary connection opportunities. If you have PTSD, a back condition, or another service-connected disability that contributed to your sleep apnea, file it as secondary.
5. Accepting a 0% rating without appeal. If you are symptomatic or using a CPAP, a 0% rating is wrong. File a Supplemental Claim with the right evidence.

What to Expect at Your C&P Exam

The examiner will review your sleep study results, treatment history, and current symptoms. Be specific about how often you use your CPAP, what happens when you do not, and how sleep apnea affects your daily functioning — your ability to work, drive, and concentrate. The examiner is filling out a Disability Benefits Questionnaire (DBQ), and specific answers produce accurate results. Use the free VA claim tools on this site to organize your symptoms before the exam.

The Bottom Line

Sleep apnea under DC 6847 is a straightforward rating once you understand the criteria. If you use a CPAP, you qualify for 50%. The key is getting the diagnosis documented, the treatment recorded, and the nexus established. Get the sleep study. Get the nexus letter. File the claim.