Sleep apnea is common among veterans, and it is also one of the most frequently denied claims. The condition is real and documented by a sleep study, but the VA often denies it because the service connection is not clear. This guide explains how the VA rates sleep apnea and how veterans establish that link.
How the VA rates sleep apnea
Sleep apnea is rated under diagnostic code 6847. The commonly cited rating levels are:
- 0 percent — diagnosed but asymptomatic
- 30 percent — persistent daytime sleepiness (hypersomnolence)
- 50 percent — requires a breathing assistance device such as a CPAP machine
- 100 percent — chronic respiratory failure with carbon dioxide retention, or cor pulmonale, or requires a tracheostomy
The 50 percent level matters because most veterans on a CPAP meet it, which is why establishing service connection is worth the effort.
Why sleep apnea claims get denied
The diagnosis is rarely the problem. The service connection is. Sleep apnea is frequently diagnosed years after separation, so there is often nothing in the service record naming it. The VA then denies for lack of a link.
There are two main paths to connect it:
Direct service connection
Evidence that symptoms began during service, even if undiagnosed. This can include:
- Documented in-service complaints of fatigue, snoring, or interrupted sleep
- Buddy statements from those who witnessed you stop breathing or snore heavily during service
- A medical opinion explaining that the symptoms of record were early signs of the condition
Secondary service connection
This is often the stronger route. Sleep apnea can be connected as secondary to an already service-connected condition (38 CFR 3.310). Common examples that a provider may link:
- Sleep apnea secondary to PTSD or another mental health condition
- Sleep apnea aggravated by weight gain tied to a service-connected condition that limits mobility
- Sleep apnea related to sinus or respiratory conditions
What a sleep apnea nexus letter should include
- A statement that the provider reviewed your sleep study, service records, and relevant history
- The path being argued (direct or secondary) and the condition it connects to
- The medical rationale, in plain language, for the connection or aggravation
- The nexus opinion in VA terms ("at least as likely as not")
A real-world example
A veteran had been denied for sleep apnea twice. Both times, the VA acknowledged the diagnosis but said there was no service connection. On the third attempt, a provider connected the apnea as secondary to his service-connected PTSD, explaining the documented medical relationship between the two and reviewing his full record. The claim finally had the link it needed.