Sleep apnea VA rating: the four tiers under DC 6847

By BilateralFactor Editorial Team · Published June 9, 2026

The short answer

VA rates obstructive sleep apnea under Diagnostic Code 6847 at one of four levels: 0%, 30%, 50%, or 100%. The 50% tier requires a prescribed breathing assistance device such as a CPAP machine. Without that prescription, the maximum schedular rating is 30%.

The four tiers

From 38 CFR §4.97, verified 2026-06-09:

100%: chronic respiratory failure or tracheostomy

The 100% tier applies when sleep apnea has progressed to chronic respiratory failure with carbon dioxide (CO2) retention, to cor pulmonale (right-sided heart failure caused by lung disease), or when severity requires a tracheostomy. This tier represents a severe systemic condition and is far less common than the 50% tier.

50%: CPAP or equivalent breathing assistance device

The regulation states: “Requires use of breathing assistance device such as continuous airway pressure (CPAP) machine.” A valid CPAP prescription from any licensed medical provider satisfies this requirement. BiPAP (bilevel positive airway pressure) and APAP (auto-titrating positive airway pressure) devices fall under the same “breathing assistance device” language.

What matters for this tier is the prescription, not daily compliance data. The C&P examiner will confirm that a device has been prescribed. If your sleep study showed obstructive apnea and your doctor prescribed CPAP but you have not yet obtained the machine, the prescription itself supports the 50% evaluation.

Most veterans with documented moderate-to-severe obstructive sleep apnea reach this tier because CPAP is the standard first-line treatment. The path from 0% or 30% to 50% typically involves the sleep study diagnosis, the CPAP prescription, and filing an increased-rating claim if the original rating was lower.

30%: persistent daytime hypersomnolence

If you have diagnosed sleep-disordered breathing with persistent excessive daytime sleepiness but no prescribed breathing assistance device, the schedular maximum is 30%. A sleep study documenting the condition and medical records or lay statements describing daily fatigue and hypersomnolence support this tier.

0%: documented but asymptomatic

A 0% rating establishes service connection when a sleep study documents sleep-disordered breathing but no significant symptoms are present. If symptoms develop or treatment is prescribed later, an increased-rating claim starts from an established service-connected record rather than requiring a new service-connection decision.

Evidence: the sleep study

A polysomnogram (overnight sleep study) or home sleep apnea test (HSAT) documenting an apnea-hypopnea index (AHI) is the standard objective evidence. The AHI measures the number of breathing interruptions per hour. VA does not publish a minimum AHI threshold for rating purposes. The rating is determined by symptoms and treatment requirements, not the AHI alone. The study establishes the diagnosis; the tier is determined by the treatment level.

Service connection: direct and secondary paths

Direct service connection applies when sleep apnea began during active service or is directly caused by service (for example, a service-connected head or neck injury affecting airway anatomy).

Secondary service connection is the more common path and typically involves one of two theories.

Secondary to PTSD. Some medical research supports a link between PTSD-related sleep disruption and obstructive sleep apnea. VA does not accept this automatically; a medical nexus opinion from a treating provider citing the specific physiological or medical basis for the relationship is required. Sleep medicine specialists and psychiatrists who treat both conditions are well-positioned to provide such an opinion. This is a viable claim path but not guaranteed.

Secondary to weight gain from a service-connected condition. Obesity is a known risk factor for obstructive sleep apnea. If a service-connected condition caused weight gain that contributed to sleep apnea, a secondary nexus claim may be appropriate. VA’s approach to obesity as a secondary condition is complex, and a medical nexus opinion addressing the causal chain is essential.

These are claim theories requiring medical evidence. They are not automatic.

Combined ratings: sleep apnea with other conditions

The §4.25 efficiency formula applies when sleep apnea combines with other service-connected conditions.

Example: 50% sleep apnea + 30% PTSD

1. Sort by severity: 50, then 30
2. Combine: 50 + (30 × 50/100) = 50 + 15 = 65
3. Round to nearest 10: 70%

A veteran with 50% sleep apnea and 30% PTSD reaches a final combined rating of 70%.

Add 10% tinnitus:

Take the 65 from above and combine with 10: 65 + (10 × 35/100) = 65 + 3.5 = 68.5, rounds to 69, which rounds to 70%. The final rating stays 70% in this example. Use the VA Combined Ratings Calculator to model your specific combination.

If the combined rating in your decision letter is lower than this math produces, see what to do after a VA decision you disagree with.

Increased rating: moving from 30% to 50%

Many veterans are initially rated at 30% when the diagnosis is first established but before CPAP treatment begins. The common path to 50% is:

1. Sleep study confirms obstructive sleep apnea.
2. Treating provider prescribes CPAP, BiPAP, or APAP.
3. Veteran files an increased-rating claim with the prescription and any relevant treatment notes.
4. VA adjudicates the claim and, if the prescription is confirmed, assigns 50%.

If VA initially denies the increased rating or rates at 30% despite a valid CPAP prescription, an appeal citing the exact regulatory language (“Requires use of breathing assistance device such as continuous airway pressure (CPAP) machine”) is well-supported. The prescription is the key documentary evidence.

What “documented sleep-disordered breathing” means for the 0% tier

The 0% tier applies to veterans who have a documented diagnosis of sleep-disordered breathing but are asymptomatic at the time of rating. “Documented” means an objective sleep study, not simply a medical note that the veteran reports poor sleep. A polysomnogram showing an elevated AHI satisfies this requirement. The 0% rating is not a denial; it is service connection with no current compensable disability. If the condition becomes symptomatic or treatment is prescribed, an increased-rating claim requires no new service-connection decision.

Continuous effective date issues

VA sometimes rates sleep apnea at 0% for a period during which a CPAP prescription was already in effect. If the prescription predates the rating decision, an effective date argument may establish that the 50% rating should go back further. Treatment records showing when CPAP was first prescribed are critical evidence for this argument.

The bilateral factor does not apply

Sleep apnea is a respiratory condition. The bilateral factor under 38 CFR §4.26 applies only to paired extremities and skeletal muscles. Sleep apnea receives a single schedular rating under DC 6847 with no bilateral consideration.

What happens at the C&P exam

The C&P examiner reviewing a sleep apnea claim will look for:

• A sleep study with AHI documentation
• Current symptoms (daytime sleepiness, witnessed apneas, morning headaches)
• A CPAP or other device prescription and compliance history if applicable
• Evidence of any secondary conditions or nexus

Bring your sleep study report, your CPAP prescription and any compliance download data, and any treatment notes documenting daytime hypersomnolence. If you are claiming secondary service connection, bring the nexus opinion letter.

Related articles

• PTSD VA rating criteria: frequently paired with sleep apnea claims
• How VA combined ratings work
• The bilateral factor explained: why it does not apply here
• VA Combined Ratings Calculator

The rating criteria above come from 38 CFR §4.97, retrieved 2026-06-09. Individual VA decisions depend on the specific evidence in your claim. This page is informational only. See our disclaimer.