Sleep Apnea

A veteran rated at 30% for sleep apnea draws roughly $537 a month. The same veteran rated at 50% draws roughly $1,159. That's $622 a month, $7,464 a year, tax-free, riding on a single line in a sleep study report.

The line is whether a CPAP was prescribed and is medically necessary. That's the threshold under 38 CFR § 4.97 Diagnostic Code 6847. It's the single most consequential rating boundary in the whole respiratory chapter of the rating schedule, and most veterans never see it spelled out clearly. I pulled together the regulatory text, the medical criteria, the patterns I've seen in BVA decisions, and the places these claims most often get stuck. The goal here is to lay out what the rating actually is, where the 50% cutoff lives, and what tends to separate a claim that lands at 50% from one that lands at 30%.

TL;DR

• Sleep apnea is rated under 38 CFR § 4.97 DC 6847 at four levels: 0%, 30%, 50%, and 100%.
• The 50% rating requires use of a breathing assistance device such as CPAP. That single line is worth roughly $622 a month over the 30% rating.
• Sleep study diagnosis typically requires an AHI of at least 5 events per hour, with AHI of 15 or higher generally classified as moderate to severe.
• Roughly 660,000 veterans are service-connected for sleep apnea according to VA's 2024 Annual Benefits Report, which puts it inside the top 15 rated conditions overall.
• The most common denial paths are weak nexus opinions, missing CPAP necessity documentation, and effective date disputes around when the CPAP was first prescribed.

The Rating Schedule, Word for Word

38 CFR § 4.97, Diagnostic Code 6847 (Sleep apnea syndromes, obstructive, central, mixed), reads as follows:

Chronic respiratory failure with carbon dioxide retention or cor pulmonale, or; requires tracheostomy: 100%

Requires use of breathing assistance device such as continuous airway pressure (CPAP) machine: 50%

Persistent day-time hypersomnolence: 30%

Asymptomatic but with documented sleep disorder breathing: 0%

That's the entire rating table. Four tiers, no in-between values, no overlap. A veteran's sleep apnea sits in one of those four buckets. The compensation difference between adjacent buckets is significant at every step, but the 30-to-50 jump is the one that matters for the largest number of veterans.

The 0% tier covers veterans who have a documented diagnosis on a sleep study but no daytime symptoms and no prescribed treatment. Service-connected, no compensation. The diagnosis is preserved for future increase claims if symptoms develop.

The 30% tier requires persistent daytime hypersomnolence. That phrase has a specific meaning. It's not garden-variety tiredness. It's the kind of daytime sleepiness that interferes with daily function, often documented with an Epworth Sleepiness Scale score, sleep logs, or specific clinical findings.

The 50% tier is where most rated veterans land, because once OSA is severe enough to show up on a sleep study, treatment almost always follows.

The 100% tier is rare. It covers veterans with chronic respiratory failure, CO2 retention, cor pulmonale (right-sided heart failure from chronic lung pressure), or who require tracheostomy. These are end-stage presentations.

Why the 50% Threshold Carries Most of the Compensation Weight

The 2026 VA disability compensation rates put the dollar differences this way for a single veteran with no dependents:

• 30%: $537.42 per month
• 50%: $1,159.45 per month

That's a $622.03 monthly delta, $7,464.36 annually, tax-free. Across a 30-year compensation window, the difference is over $223,000 without any cost-of-living adjustment factored in.

For a married veteran with two children, the numbers stretch further because dependent allowances kick in above 30%. A 50% rating for that family pulls in roughly $1,372 a month versus roughly $605 at 30%. The delta widens.

There's no in-between rating. There's no 40%. The schedule jumps from 30 to 50 the moment a CPAP is prescribed and medically necessary. So a veteran whose sleep apnea is severe enough to warrant a CPAP but who didn't have CPAP documentation in the claims file at the time of rating can sit at 30% for years, missing roughly $7,500 annually until a supplemental claim or appeal corrects it.

This is the cliff I keep seeing in BVA decisions. The medical situation is the same. The compensation isn't.

The CPAP Rule, and What "Requires" Actually Means

The 50% rating turns on the word "requires." Not owns. Not uses occasionally. Not "was prescribed but never picked up."

VA's interpretation, supported by the Court of Appeals for Veterans Claims, is that "requires" means the device is medically necessary. The veteran's sleep medicine specialist has determined that without the device, the apnea events would continue at a clinically significant level.

In practice, this means three things need to be in the file:

• A sleep study documenting OSA, typically with an AHI (Apnea-Hypopnea Index) of 5 or greater.
• A prescription for a CPAP, BiPAP, or similar PAP device.
• Documentation that the device is medically necessary, not optional.

Number three is where claims sometimes get stuck. A C&P examiner can write "CPAP prescribed for symptomatic relief" and that language has been used in the past to argue against the 50% rating. The argument the rater might make is that the CPAP is for comfort, not for medical necessity, and therefore the veteran doesn't "require" it.

The Board has generally rejected this kind of distinction when the underlying sleep study supports medical necessity. The fact that a veteran can technically survive without a CPAP doesn't mean the device isn't required. People can technically survive without insulin, too. The question is whether the device is medically necessary to treat the diagnosed condition.

Still, the explicit language in the prescription matters. A prescription that says "patient requires CPAP for treatment of obstructive sleep apnea" is harder to dismiss than one that says "trial of CPAP recommended."

Sleep Study Mechanics: AHI Thresholds and What They Mean

The Apnea-Hypopnea Index is the central metric in any sleep apnea diagnosis. It measures the number of apnea events (full breathing stoppages) plus hypopnea events (partial breathing reductions) per hour of sleep.

The American Academy of Sleep Medicine criteria, which VA generally follows, set the thresholds this way:

• AHI of 5 to 14: Mild OSA
• AHI of 15 to 29: Moderate OSA
• AHI of 30 or greater: Severe OSA

The diagnostic threshold for OSA is generally AHI of 5 or greater. The severity threshold that typically triggers a CPAP prescription is AHI of 15 or greater, although clinicians can prescribe at lower AHI values if symptoms are significant. Some veterans with AHI in the 5 to 14 range still get CPAPs because of severe daytime sleepiness, witnessed apneas, or comorbidities.

There are two kinds of sleep studies. A polysomnography (PSG) is the in-lab overnight study with full monitoring. A home sleep test is a portable study, less comprehensive but cheaper and more accessible.

VA accepts both. There's no rule that says a home sleep test isn't good enough for a 50% rating, but home tests sometimes miss central sleep apnea or mixed apnea presentations. If the home test is borderline, the sleep medicine specialist may recommend a follow-up in-lab study.

For claims purposes, the sleep study report is the foundational document. It should include:

• AHI value
• Oxygen desaturation index (ODI)
• Time spent below 88% or 90% oxygen saturation
• Sleep architecture data (REM percentage, sleep efficiency)
• The clinician's diagnostic impression and treatment recommendation

If the sleep study report exists but the CPAP prescription is in a separate document, both need to make it into the claims file. I've seen cases where the sleep study was in the record but the CPAP prescription wasn't, and the rating got hung up at 30% until the supplemental came in.

The Almost-Change That Didn't Happen in 2022

In 2022, VA proposed amendments to the sleep apnea rating criteria that would have made the 50% rating significantly harder to reach. The proposed rule, published in the Federal Register, would have shifted the 50% trigger from "requires use of breathing assistance device" to a more functional standard tied to symptom severity and treatment response.

Under the proposed framework, simply being prescribed and using a CPAP wouldn't have been enough. The veteran would have needed to demonstrate that, despite treatment, they still experienced significant daytime impairment.

That proposal generated substantial pushback from veterans service organizations, sleep medicine specialists, and members of Congress. The argument from the medical side was that CPAP-controlled sleep apnea is still sleep apnea. The compensation reflects the chronic medical management burden, the costs of treatment, and the impact on quality of life, not just the residual symptoms after treatment.

The proposed rule was not finalized. The existing DC 6847 criteria remain in effect as I'm writing this. But veterans should know the proposal happened. It surfaces again periodically in rulemaking discussions, and it's worth tracking. If the change ever does go through, it would substantially affect future rating decisions, though existing ratings would generally be protected under the grandfathering provisions VA typically applies to schedule changes.

Service Connection Pathways: Direct, Secondary, and the Absence of Presumption

For sleep apnea to be rated at all, it has to first be service-connected. The three primary pathways are direct, secondary, and presumptive.

Direct service connection

Requires showing that the sleep apnea began in service or is directly related to a service event. This is the hardest of the three for sleep apnea, because the condition often manifests years after service when veterans gain weight, age, or have it diagnosed for the first time. Direct claims tend to win when there's documentation of in-service sleep disturbance, witness statements about loud snoring or witnessed apneas during service, or a sleep study performed during or shortly after service.

Secondary service connection

The most common winning pathway. Under 38 CFR § 3.310, sleep apnea can be granted as secondary to a service-connected condition that either caused it or aggravated it. The most-filed secondary chain is sleep apnea secondary to PTSD. The medical literature backing that chain is unusually strong, and the regulatory framework supports both causation and aggravation theories.

Other common secondary pathways include sleep apnea secondary to musculoskeletal conditions that limit mobility and contribute to weight gain, sleep apnea secondary to medications prescribed for other service-connected conditions, and sleep apnea secondary to sinusitis, rhinitis, or deviated septum where the upper airway anatomy is affected.

Presumptive service connection

Does not currently exist for sleep apnea. Sleep apnea is not on the PACT Act's list of presumptive conditions tied to burn pit and toxic exposure, despite ongoing advocacy from veterans groups arguing that toxic inhalation exposures contribute to upper airway changes. There have been congressional discussions about adding sleep apnea to the presumptive list, particularly for veterans with documented in-service exposure to particulates, but as of right now no presumption exists.

So for sleep apnea, a claim has to be filed and proven under direct or secondary theory. The presumptive shortcut isn't available.

What Common Denial Reasons Look Like

Across BVA decisions involving sleep apnea, a handful of denial patterns repeat:

No current diagnosis. The claim was filed but no sleep study is in the record, or the sleep study was performed but didn't meet diagnostic thresholds. This is the cleanest denial type and the hardest to argue around. Without a diagnosed condition, there's nothing to rate.

Weak or missing nexus opinion for service connection. This is the dominant pattern for secondary claims. The C&P examiner writes a short opinion that doesn't address the medical pathway, or the private opinion is too vague to be probative. Across 275 denied sleep apnea cases in Claim Raven's analysis, nexus gap was named in 28.7% of denials and missing service connection in another 12.7%. Together that's more than 41% of sleep apnea denials hanging on the nexus side of the analysis.

CPAP not documented as medically necessary. The veteran has a CPAP but the prescription says "trial" or "as needed" rather than "required." Rater grants service connection but rates at 30% rather than 50%.

Effective date disputes. Sleep apnea was diagnosed years before the claim was filed, or the CPAP was prescribed at a date the veteran can't document. The rating becomes effective at the date of claim rather than the date of diagnosis, which can cost years of back pay.

Obesity as alternative cause. For secondary claims, especially secondary to PTSD or musculoskeletal conditions, the C&P examiner often attributes the OSA primarily to obesity without addressing why the veteran became obese or whether the obesity itself is part of the service-connected chain.

The Board's standard for what makes a medical opinion persuasive comes up again and again in these decisions. From a typical Board explanation:

"A medical opinion is most probative if it is factually accurate, fully articulated, and based on sound reasoning."

A C&P opinion that names obesity as the cause without explaining why the veteran became obese, or one that names "natural aging" without addressing in-service exposures or service-connected medications, isn't "fully articulated" in the way the Board uses that phrase.

Effective Date Issues Around CPAP Prescription

The effective date of a 50% rating typically goes back to whichever is later: the date of the claim, or the date the CPAP became medically necessary.

The complication is that "medically necessary" is sometimes documented in the medical record on a different date than when the sleep study showed OSA. A veteran might have had a sleep study three years ago showing AHI of 22, but the CPAP wasn't prescribed until last year because the veteran initially declined treatment. The 50% rating might then be effective from the CPAP prescription date, not the sleep study date.

The opposite happens too. A veteran might have been on a CPAP for years before filing a claim. The sleep study and prescription both predate the claim. In that case, the rating becomes effective at the date of claim, not the date of CPAP prescription, because the claim is what triggers the rating period.

There's an exception for service-connected claims filed within one year of separation from active duty. Those can be effective from the day after separation. But for most claims, effective date follows the claim date.

This is one of the areas where supplemental claims and appeals can recover significant back pay. If a veteran was rated at 30% but the underlying medical evidence supported 50% at the time, a supplemental with the medical evidence can extend the 50% rating back to the original effective date of service connection. The back pay on a 20-point rating difference over several years can run into five figures.

How Sleep Apnea Combines With Other Ratings

VA's combined ratings table is not additive. A veteran with two 50% conditions doesn't end up at 100%. The math runs as a progressive reduction of the veteran's remaining capacity.

Here's how a 50% sleep apnea rating combines with common ratings. VA rounds to the nearest 10%, with values ending in 5 rounded up.

• 50% sleep apnea + 30% other = 50 + 15 = 65, rounds to 70% combined
• 50% sleep apnea + 50% other = 50 + 25 = 75, rounds to 80% combined
• 50% sleep apnea + 70% other = 70 + 15 = 85, rounds to 90% combined
• 50% sleep apnea + 100% other = 100% (no further combination needed)

The mechanics work like this. You take the higher rating first. The remaining capacity is 100 minus that rating. The smaller rating then takes its percentage of the remaining capacity. The result is added to the larger rating, and the total is rounded to the nearest 10.

For a veteran with PTSD at 70% who adds sleep apnea at 50%, the combined rating becomes 90%. That's the difference between roughly $1,756 per month and $2,297 per month for a single veteran in 2026, or roughly $541 per month. Across a year, $6,492. Tax-free.

For a veteran with multiple service-connected conditions, sleep apnea at 50% is often the rating that pushes the combined total over 90% or to 100%. There's a meaningful step function in compensation between 90% and 100%, and between 100% scheduler and 100% with SMC qualification. The 50% sleep apnea rating, on top of an existing 70% or 80% combined, can be the rating that gets a veteran to those thresholds.

The 30% Tier and Why It Exists

The 30% rating is for "persistent daytime hypersomnolence" without CPAP requirement. In practice, this is a rare placement because once OSA is severe enough to cause persistent daytime hypersomnolence, a CPAP is almost always prescribed.

Where the 30% rating shows up is in cases where:

• The veteran has a CPAP prescription but doesn't use it consistently. Some raters have treated non-adherence as evidence that the CPAP isn't "required" in the regulatory sense.
• The veteran refuses or can't tolerate CPAP and uses an oral appliance or position therapy instead. There's ongoing legal back-and-forth about whether oral appliances qualify as "breathing assistance devices" under DC 6847.
• The veteran was diagnosed before CPAP was prescribed, and the effective date period falls in that window.

The CPAP adherence argument is one that has been gradually pushed back on. The current trend in BVA decisions is that the question is whether the device is medically necessary, not whether the veteran uses it perfectly. A veteran who is prescribed a CPAP and uses it inconsistently is still a veteran who requires the device. Inconsistent use is a treatment compliance issue, not a rating issue.

The oral appliance question is murkier. Strict reading of DC 6847 talks about "breathing assistance device such as continuous airway pressure (CPAP) machine." The "such as" language has been interpreted to include other PAP devices like BiPAP and APAP. Whether it extends to mandibular advancement devices is a question that's been litigated case by case, with mixed outcomes.

Bottom Line

Sleep apnea at the VA is rated under 38 CFR § 4.97 DC 6847 at four levels: 0%, 30%, 50%, and 100%. The 50% rating turns on whether a CPAP or equivalent breathing device is medically required, and that single threshold is worth roughly $622 a month over the 30% rating for a single veteran. The condition has to first be service-connected through direct or secondary pathways (there's no presumption for sleep apnea), and the most common secondary chain runs through PTSD via medication-induced weight gain, sleep architecture disruption, or autonomic effects. The claims that get stuck tend to get stuck on either a weak nexus opinion for service connection or a CPAP necessity question for the 50% rating. The Board has been consistent on the standard for what makes a medical opinion persuasive: it has to be factually accurate, fully articulated, and based on sound reasoning. Bare-bones conclusions without rationales don't carry the weight, and that pattern shows up at every stage of the sleep apnea claim process.

Methodology and Limitations

• Data source: Rating criteria are quoted directly from 38 CFR § 4.97 Diagnostic Code 6847. Service-connection counts referenced from VA's 2024 Annual Benefits Report. Effective date and combined rating math follows the VA Adjudication Procedures Manual (M21-1) and the VA combined ratings table at 38 CFR § 4.25. Medical thresholds follow American Academy of Sleep Medicine criteria.
• Sample size: Patterns in this post are drawn from Claim Raven's analysis of 101,518 condition records drawn from 49,876 Board decisions, including 1,115 sleep apnea cases. Within that sleep apnea subset, outcomes ran 38.2% granted, 37.1% remanded, and 24.7% denied. The dataset captures BVA-level decision outcomes rather than schedular rating tiers, so the 30% vs 50% rating distribution referenced in this post is regulatory framework rather than a BVA-coded tier breakdown.
• Classification approach: Rating tier definitions are drawn from the regulatory text. Denial reason patterns are based on Claim Raven's review of BVA decisions involving sleep apnea claims.
• Limitations:
• Compensation figures are based on the 2026 VA disability pay rates for a single veteran with no dependents. Family rates differ above 30%.
• The combined ratings examples use approximate 2026 figures. Actual amounts depend on dependent status, SMC qualifications, and effective dates.
• The 2022 proposed rule change to DC 6847 has surfaced and resurfaced. The status quo is described as of the date of this post.
• Sleep study and CPAP necessity standards described here reflect typical VA practice and the AASM clinical guidelines. Individual sleep medicine specialists can vary in how they interpret marginal cases.
• Effective date rules described here cover the most common scenarios. Specific cases with multiple claims, prior denials, or CUE motions can produce different effective dates.
• Rating decisions on oral appliances versus CPAP machines vary across BVA decisions. The current state of that question is unsettled.
• These observations reflect patterns from the regulatory text and BVA decisions. They are not predictions of individual outcomes.