Nexus letter vs. a DBQ: what the Board weighed
A DBQ is a VA form for medical findings. A nexus letter explains why your condition is linked to your service. Here is how the Board treated each in real appeals.
DBQ stands for Disability Benefits Questionnaire. The VA posts public DBQs so your own health care provider can send medical evidence on the VA’s form. A nexus letter is a signed medical opinion that links a current condition to your service.
If you sent a DBQ and were still denied: your decision letter lists the reasons. We read those reasons next to your DBQ and your records, page by page.
If you’re deciding what to send: the points below are what the Board weighed when a DBQ or a private opinion was in the file.
How a DBQ and a nexus letter differ
- A DBQ collects the medical information the VA needs, on the VA’s own form. Your health care provider can fill out the public ones.
- The VA’s Medical Opinion DBQ isn’t one of them. The VA lists it among the DBQs “not available for public use.” A nexus letter is where a private clinician explains the link, in full sentences.
- Where DBQs fell short in these appeals: one box checked next to a preprinted “at least as likely as not” line, with no reasons. The Board called one “vague and conclusory.” Three VA opinion DBQs fell short too, for passing over what witnesses saw.
- The VA doesn’t pay or reimburse the cost of a private DBQ. In most cases, it says, you’re entitled to a VA exam at no cost.
What the Board looked for
“Probative” is the Board’s word for convincing. A DBQ can come from a VA examiner or from your own provider. These appeals had both.
A private DBQ that came with reasons.Granted · 2025
“The provider examined the Veteran, considered his medical history, and provided a thorough rationale.”
A private provider filled out DBQs for this veteran’s sleep apnea and headaches. The provider explained how PTSD, the medicine for it, pain, and weight caused and worsened his sleep apnea.
Read decision A25051182 on VA.gov (opens in a new tab)Three VA opinion DBQs, one private opinion.Granted · 2025
“The Board further finds this private medical opinion to be persuasive, particularly compared with the Medical Opinion DBQs from October 2018, April 2019, and October 2021 discussed above.”
Three VA examiners said no on the VA’s Medical Opinion DBQ. They leaned on the lack of a sleep apnea diagnosis in service and passed over witnesses who saw him snore and stop breathing. The doctor who diagnosed and treated his sleep apnea explained why it began in service.
Read decision A25050609 on VA.gov (opens in a new tab)A checked box with no reasons.Denied · 2025
“Without supporting rationale, the opinion is no more than an unsupported conclusion, it cannot serve as an adequate medical opinion for VA compensation purposes.”
A private hearing exam came with one checked box next to a preprinted line linking the condition to service. It never named the noise or event in service and gave no reasons. The Board went with the VA examiner.
Read decision A25051414 on VA.gov (opens in a new tab)
What a nexus letter adds to a DBQ
From the opinions the Board found convincing:
- Names the event in service and the condition, in plain words.
- Explains how one led to the other. A checked box doesn’t.
- Shows the clinician read your records, with the pages named.
- Uses what you and others saw, like a spouse who heard you stop breathing.
- Comes from a clinician qualified to give a medical opinion.
- Takes on the VA’s opinion when the file has one.
See what your records support
Our Nexus Check reads every page you send and cites the page for each finding, including pages that work against the claim. It’s free. If you request a letter, we draft it, and a licensed clinician reviews it, edits it and signs only what they support.
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If we don’t respond the same day during business hours, you get 15% off your nexus letter.
A call, voicemail or text from us counts as our reply. Business hours: Mon to Fri 8 to 5, Sat and Sun 8 to 2 Pacific. Terms
We don’t file claims or contact the VA for you. You or your accredited representative decide how to submit your evidence.
Public Board of Veterans’ Appeals decisions. These veterans weren’t Anchorpoint clients. Every claim is decided on its own evidence.