I have sat on the examiner's side of the table for a long time. Most veterans walk into a Compensation and Pension exam nervous, and many walk out having understated their condition without meaning to. A little preparation fixes most of that.
A C&P exam gives VA medical information it needs to decide your claim. Depending on what VA asked, the examiner may confirm a diagnosis, measure how severe the condition is, give an opinion on whether it is connected to service, or all three. Exams are done by VA clinicians or by contracted examiners, and the findings are usually recorded on a Disability Benefits Questionnaire, or DBQ.
The examiner doesn't decide your claim and doesn't assign your rating. A VA rater does that later, using the report along with everything else in your file.
If you miss a scheduled exam without good cause, VA can decide the claim on the evidence it already has, and for some claims it must deny. If you truly can't make the date, call to reschedule before the appointment, not after.
Describe your bad days, not just today. Many conditions come and go. If your back flares several times a month and leaves you in bed, say so: how often, how long, and what you can't do during a flare. The rules require the examiner to consider flare-ups and functional loss, including what happens with repeated use, but they can only record what you tell them.
Answer honestly and specifically. Don't push through a movement that hurts to look tough, and don't exaggerate either. Tell the examiner where pain starts during range of motion. If you use a brace, cane or CPAP, mention it. If an exam feels rushed or incomplete, note what was skipped as soon as you leave, while it's fresh.
You can request a copy of the exam report. Read it. If it contains factual errors, leaves out flare-ups you described, or gives a negative opinion with little reasoning, that matters. A rater can weigh a private medical opinion against a VA exam, and an opinion that addresses the full record with clear reasoning often carries more weight. That's the gap a well-supported Nexus Letter is meant to fill. If a decision has already come back, see your three options for review.

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Nexus Letters and VA Disability Examinations
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Get the bookThis article is general information, not medical or legal advice. Every claim depends on its own record.
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