What’s your situation?
- VA denied my claim: What to check after a denial
- I'm claiming this condition for the first time: How to file a VA claim for PTSD
- My current rating no longer fits: PTSD rating increase: showing the next level
- I have a claim exam coming up: C&P exam preparation
The secondary theory
A secondary claim does not argue the apnea began in service. It argues the apnea was caused or aggravated by a condition that is already service-connected — here, PTSD. The claim therefore needs three things: a current apnea diagnosis, the underlying PTSD service connection, and a reasoned medical opinion connecting them. The opinion is the contested piece: an examiner or treating provider has to explain the link in this veteran's case, not merely note that the two conditions coexist. Veterans pursue this pairing with that opinion in hand; without it, secondary claims are routinely denied for lack of a nexus.
In this series: PTSD VA rating
- PTSD VA rating criteria: the general rating formula
The complete General Rating Formula for Mental Disorders — 0% to 100% — that VA applies to PTSD under DC 9411, with a plain-language reading of every level.
- The PTSD DBQ and C&P exam
What the PTSD Disability Benefits Questionnaire covers — diagnosis, the occupational and social impairment summary, and the symptom record — and how it feeds the rating formula.
- How to file a VA claim for PTSD
The three elements of a PTSD claim — current diagnosis, in-service stressor, and a link between them — and the evidence that establishes each one.
- PTSD rating increase: showing the next level
An increase turns on impairment, not diagnosis: what has to change between the formula's levels, and the records that prove the change.
How sleep apnea is rated (DC 6847)
However the connection is granted, the percentage comes from DC 6847, the sleep apnea schedule.
- 100%: chronic respiratory failure with carbon dioxide retention or cor pulmonale, or requires a tracheostomy.
- 50%: requires use of a breathing assistance device such as a continuous airway pressure (CPAP) machine.
- 30%: persistent day-time hypersomnolence.
- 0%: asymptomatic but with documented sleep disorder breathing.
38 CFR 4.97, Diagnostic Code 6847 — Sleep apnea syndromes (eCFR)
The sleep study
Apnea ratings rest on a documented sleep disorder, and the diagnosis is made by sleep study — the study report, the prescribed device, and records showing you use it are the core evidence. If a CPAP is prescribed, the 50% line turns on the device being required, so the prescription and compliance records belong in the file. File the secondary claim with the study, the PTSD rating decision, and the nexus opinion together, and protect the date with an Intent to File if the opinion will take time to obtain.
38 CFR 4.97, Diagnostic Code 6847 — Sleep apnea syndromes (eCFR)
Secondary apnea evidence worksheet
A secondary claim is three documents deep: the apnea diagnosis, the PTSD service connection, and the opinion joining them. Assemble all three before filing so the claim does not wait on any one of them.