Veterans often ask whether they should get a nexus letter before filing their claim, before their C&P exam, or after receiving a denial. The answer depends on the strength of your evidence, the complexity of your condition, and your strategic goals. Each timing option has distinct advantages.
Option 1: Before Filing the Claim
Submitting a nexus letter with your initial claim means the VA has a favorable medical opinion in the file from day one. Advantages:
- The adjudicator sees favorable evidence immediately.
- If a C&P exam is ordered, the examiner must address the nexus letter in their opinion.
- May result in a grant without a C&P exam if the evidence is strong enough.
- Filing as a Fully Developed Claim (FDC) with a nexus letter can accelerate processing.
Option 2: Before the C&P Exam
If you've already filed but haven't had your C&P exam yet, submitting a nexus letter before the exam forces the examiner to address it:
- The C&P examiner must explain why they agree or disagree with the private opinion.
- This produces a more detailed C&P report that is easier to challenge on appeal if negative.
- A vague negative opinion ("not related to service") is harder to write when a detailed positive opinion is already in the file.
Option 3: After a Denial
Getting a nexus letter after a denial allows the physician to directly target and rebut the specific reasons for the denial:
- The physician can read the C&P exam report and address its specific deficiencies.
- The nexus letter can rebut the exact rationale the VA used to deny the claim.
- The letter serves as "new and relevant evidence" for a Supplemental Claim.
The Key Point
There is no single "best" time — it depends on your situation. For straightforward claims with strong evidence, a nexus letter submitted with the initial filing often wins on the first try. For complex claims or claims that have already been denied, a targeted nexus letter that addresses the specific deficiency is the most effective approach. Either way, having a nexus opinion at some point in the process significantly improves your chances.
Continue Reading: Timing Strategy in Detail
Strategy 1: Filing with a Nexus Letter (Proactive Approach)
This approach is ideal when:
- You have clear in-service documentation of the event or condition.
- The nexus argument is straightforward (documented injury, continuous treatment, current diagnosis).
- You want to file as a Fully Developed Claim for faster processing.
- You have a strong records package and want to maximize the chance of a first-filing grant.
When filing with a nexus letter, the VA may still order a C&P exam. But the examiner must address the nexus letter in their report. If the examiner agrees, the claim is granted. If the examiner disagrees, they must explain specifically why — and that explanation creates a detailed record that can be challenged on appeal.
This approach is particularly effective for conditions with well-established medical connections to military service — back injuries from documented events, hearing loss from documented noise exposure, or respiratory conditions in veterans with documented burn pit exposure.
Strategy 2: After Filing but Before the C&P Exam
If you filed without a nexus letter and are waiting for a C&P exam, you can still submit a nexus letter to the VA before the exam takes place. This approach:
- Forces the C&P examiner to acknowledge and address the private opinion.
- Prevents the "bare negative opinion" problem, where the examiner simply states "not related to service" without detailed reasoning.
- Creates a better record for potential appeal, because the examiner must explain their disagreement with specific private medical reasoning.
To submit evidence after filing, you can upload documents through VA.gov, submit them through your VSO, or mail them to the VA Evidence Intake Center. Ensure the documents are associated with your specific claim.
Strategy 3: After a Denial (Rebuttal Approach)
This is often the most strategically powerful use of a nexus letter, because the physician has a specific target to address:
- Request the C&P exam report. Obtain the full report, not just the summary in the decision letter.
- Identify the specific deficiency. What exactly did the examiner get wrong? Inadequate rationale? Factual errors? Failure to consider evidence? Incorrect medical reasoning?
- Provide the C&P report to the nexus physician. The physician reviews the C&P opinion alongside the veteran's records.
- The nexus letter directly rebuts. The private opinion addresses the C&P rationale point by point, explaining why the examiner's reasoning is incorrect, incomplete, or based on factual errors.
- File a Supplemental Claim. The nexus letter constitutes "new and relevant evidence" that triggers a fresh review of the entire claim.
This approach produces the most targeted and persuasive opinions because the physician knows exactly what argument they need to overcome.
When NOT to Get a Nexus Letter
A nexus letter is not always necessary:
- Presumptive conditions. If your condition is on the PACT Act or other presumptive list and you have qualifying service, a nexus opinion is not strictly required. However, one can still help if the diagnosis is ambiguous or the qualifying service is disputed.
- Clear-cut cases. If you have extensive in-service documentation, continuous post-service treatment, and a current diagnosis with an obvious connection, the C&P examiner may issue a favorable opinion without a private nexus letter.
- Conditions the VA commonly grants. Some conditions (tinnitus with documented noise exposure, for example) are frequently granted based on the veteran's testimony and a standard C&P exam.
The Cost-Benefit Analysis
The decision to get a nexus letter is ultimately a cost-benefit analysis:
- Cost: The fee for the nexus letter (typically a few hundred dollars at flat rate).
- Benefit: Improved probability of a grant or favorable rating. For a 50% disability rating, monthly compensation is approximately $1,100 in tax-free benefits — over $13,000 per year for life.
- Risk of not getting one: Denial based on insufficient nexus evidence, followed by months of appeals that require a nexus letter anyway.
For most veterans with conditions that have a reasonable connection to service, the cost of a nexus letter is a fraction of a single month's compensation. The real cost is not the letter — it's the months or years of denied benefits while waiting for an appeal.
Working with Your Nexus Provider on Timing
Discuss timing strategy with your nexus provider. A physician experienced with VA claims can help you evaluate:
- Whether your evidence is strong enough to file first and get a nexus letter only if needed.
- Whether a proactive nexus letter would strengthen a borderline case.
- If you've been denied, what specific deficiency the nexus letter should address.
- Whether your condition would benefit from additional medical documentation before the nexus opinion is written.