Sleep apnea and CRSC: it’s all about what it’s secondary to.

How a “non-combat” condition qualifies

CRSC recognizes secondary conditions: if a primary condition is approved as combat-related, a condition that is medically linked to that primary can qualify too. Sleep apnea is the textbook case. The VA frequently rates obstructive sleep apnea secondary to PTSD (and sometimes secondary to TBI or to weight gain caused by combat-related orthopedic injuries). If the primary qualifies, the secondary can follow — but only if your packet documents the chain explicitly. Boards do not connect those dots for you.

The three links your packet must show

• Link 1 — a combat-related primary. Your PTSD or TBI must itself be approved (or claimed in the same packet) under a qualifying category. The chain is only as strong as its anchor.
• Link 2 — the VA’s secondary connection. Your rating decision should say your sleep apnea is secondary to that primary. If the VA rated it as directly service-connected instead, you’ll need medical nexus evidence making the secondary relationship explicit.
• Link 3 — the paper trail. The sleep study that diagnosed you, the rating decision language, and — where the VA language is thin — an independent medical opinion connecting the OSA to the combat-related primary.

Why sleep apnea claims get denied

• Claimed as a direct condition. A packet that argues sleep apnea itself came from combat almost always fails — there’s no mechanism. The secondary path is the path.
• The primary isn’t established first. If the PTSD or TBI anchor is denied or never claimed, the secondary has nothing to attach to.
• The word “secondary” never appears. The board sees an OSA rating and a PTSD rating side by side with nothing connecting them. The link exists in your VA file — the packet just never quoted it.

Why it’s worth doing right

Sleep apnea requiring a CPAP has historically carried a 50% VA rating — one of the largest single-condition ratings most retirees have. Because CRSC pays based on the combined rating of your approved combat-related conditions (up to the longevity portion of your retired pay), moving a 50% condition into the approved column can change your monthly payment more than any other single condition in your file. Run your numbers in the CRSC calculator.

Common questions

Can sleep apnea qualify for CRSC by itself?

Almost never as a direct condition — there's no combat mechanism for developing OSA. The recognized path is secondary: when your sleep apnea is medically linked to a combat-related primary condition such as PTSD or TBI, it can qualify through that causation chain. Your branch's board decides each link.

My VA letter says sleep apnea secondary to PTSD. Is that enough for CRSC?

It's the single most important sentence in your claim, but the chain needs both links proven: your packet must also establish that the PTSD itself is combat-related under a qualifying category. If the PTSD is approved and the secondary language is in your rating decision, your OSA claim is well positioned.

How much difference does an approved sleep apnea claim make?

CPAP-level OSA has historically been rated at 50%, one of the largest single-condition ratings. CRSC pays based on the combined rating of approved combat-related conditions, capped at the longevity portion of retired pay — so shifting a 50% condition into the approved column often changes the monthly amount substantially. Exact impact depends on your full rating picture.