NEXUS Letter

A NEXUS letter is a key element in filing a claim to access benefits for service-related disabilities. The NEXUS letter is a written medical opinion by a qualified medical provider specifically regarding the veteran’s injury/disability in question. Most of the time, the evaluating doctor completes the NEXUS letter; however, sometimes the veteran must complete it. There must be significant proof to get a successful VA claim these days (as there has always been). Just a tip:

The evaluator’s job is NOT to just look at your condition and say, “Okay, it’s a legitimate service-connected disability.” Their job is to determine whether the injuries are service-related and, more than anything, try to prove they aren’t.

What Is a VA NEXUS Letter and Why Do You Need One?

The NEXUS letter is a way of linking your injury to your VA or medical claim. A NEXUS letter should be written by a veteran’s primary care physician stating their medical opinion regarding whether the claim was service-connected or not.

What a lot of veterans don’t know is what they are required to do in order to get a VA disability claim, especially one that’s not originally thought of to be service-connected. This way, there’s enough evidence to show that your injury is indeed service-related and that your injuries are also on the VA’s Presumptive List.

Do You Need a Separate NEXUS Letter for Each Condition?

Yes, every condition, including secondary conditions, requires its own NEXUS letter. Only one letter is accepted per claim.

Secondary conditions are medical issues that develop as a result of an existing service-connected disability. For example, a knee injury sustained in service that later causes hip problems would qualify as a secondary condition — and would need its own separate NEXUS letter. The same applies to conditions like arthritis developing from an unresolved service-connected injury.

If your original condition has worsened over time, you may also be eligible to file a disability increase claim, which would similarly require updated supporting documentation.

How to Write a Strong VA NEXUS Letter

A strong NEXUS letter can significantly improve your chances of a successful claim — whether it’s an initial claim or an increase. The key is making sure your doctor has everything they need and that the letter meets the VA’s expectations.

Your primary care physician can write the letter, but keep in mind the VA gives more weight to credible, specialized providers — ideally one familiar with VA claims. If your private physician has stronger documentation than the VA’s assessor, their opinion can tip the scales in your favor, but only if they’ve reviewed your complete medical history, including all VA records.

A strong NEXUS letter should include:

1. Clear and concise conclusions: brief but thorough, covering the facts of the case and the doctor’s medical opinion.
2. A specialist, where possible: a podiatrist for foot or knee injuries, a neurologist for TBI, etc. Matching the doctor to the condition adds credibility.
3. Complete medical records: make sure your doctor has all relevant records, including in-service medical documentation. If you can’t locate your military records, request them from the National Personnel Records Center.
4. “At least as likely as not” language: your doctor doesn’t need to be 100% certain. A statement that the injury is “at least as likely as not” related to military service meets the VA’s standard.
5. The most recent treating physician: not required, but a current treating doctor carries more weight than one who saw you years ago.

See an example of a NEXUS letter at nd.gov. Use our VA disability calculator to estimate your monthly compensation once your claim is approved.

Taking Control of Your VA Disability Claim

The VA system has a lot of room for error, with wrong documentation, missing records, and incomplete information all common pitfalls. The most frequent reason first-time claims are denied isn’t bad faith on the VA’s part; it’s simply that the VA didn’t receive enough information or an official diagnosis to approve the claim.

That’s why taking ownership of your paperwork matters. Keep all your medical records organized and accessible, make sure your doctor has everything they need to write a strong NEXUS letter, and don’t wait for the VA to track down documentation on your behalf.

Learn how to apply for VA disability pay and check VA disability pay dates so you know exactly when to expect your first payment once your claim is approved.