A positive C&P exam opinion is strong evidence, but it is only one piece of the evidence the rating activity weighs under 38 CFR 3.102 and 3.159. Even with a favorable nexus opinion linking sleep apnea to a service-connected mental health condition, a claim can still be denied or delayed for several reasons.
First, the rating board reviews the entire claims file, not just the most recent DBQ. If earlier C&P exams or private medical records contain negative or inconsistent opinions, the rater may weigh those against the new favorable opinion, especially if the examiner did not adequately address prior negative findings. A well-reasoned rationale that explains why the current opinion is more probative (e.g., citing sleep apnea's known association with anxiety, PTSD, or antidepressant-related weight gain) helps, but the rater still has discretion to weigh conflicting evidence.
Official 2026 VA monthly compensation, including the 2.8% COLA increase.
Dependent add-ons start at a 30% rating. Child-only and dependent-parent rates: see the full 2026 pay chart.
| Rating | Monthly (2026, incl. 2.8% COLA) |
|---|---|
| 10% | $180.42 |
| 20% | $356.66 |
| 30% | $552.47 |
| 40% | $795.84 |
| 50% | $1,132.90 |
| 60% | $1,435.02 |
| 70% | $1,808.45 |
| 80% | $2,102.15 |
| 90% | $2,362.30 |
| 100% | $3,938.58 |
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Analyze my claim free →Second, secondary service connection under 38 CFR 3.310 requires showing that the service-connected condition caused or aggravated the claimed condition, not just that they are medically associated in general literature. If the examiner's opinion is vague about the actual causal mechanism in this specific veteran's case, the rater may find it insufficient.
Third, procedural issues can still arise: missing treatment records, an incomplete sleep study, or a DBQ that does not clearly state the diagnosis criteria (e.g., AHI results, CPAP prescription) can trigger a request for clarification or a new exam.
Fourth, even if service connection is granted, the disability rating itself (0, 30, 50, or 100 percent under 38 CFR 4.97, Diagnostic Code 6847) depends on whether CPAP or another breathing assistance device is required, which must be documented.
Finally, effective dates and any prior final denials matter. If sleep apnea was previously denied and not appealed within one year, a new grant may only be effective from the date of the new claim (or intent to file) rather than back to the original filing, unless there is a valid basis for an earlier effective date under 38 CFR 3.400.
Once the rating decision is issued, review it carefully for the stated rationale, the assigned percentage, and the effective date. If any of these seem inconsistent with the favorable evidence, a Supplemental Claim (VA Form 20-0995) with additional evidence or a Higher-Level Review (VA Form 20-0996) are the standard next steps.
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