What Is a Nexus Letter and Why Do You Need One?
A nexus letter is a medical opinion document that establishes a connection — or “nexus” — between a veteran’s current medical condition and their military service or a service-connected disability. Written by a qualified healthcare provider, this letter provides the medical evidence the VA requires to grant service connection for a claimed condition.
The VA adjudication process hinges on three elements: (1) a current medical diagnosis, (2) an in-service event, injury, or disease (or, for secondary claims, an existing service-connected condition), and (3) a medical nexus connecting the two. Without all three elements, a claim cannot be granted. The nexus letter addresses the third element — and it is the element most frequently missing from denied claims.
A well-crafted nexus letter does more than state a conclusion. It provides the medical reasoning — grounded in the veteran’s specific medical history, clinical evidence, and peer-reviewed literature — that explains why the claimed connection is “at least as likely as not” (50% or greater probability). This level of medical detail is what separates nexus letters that result in grants from those that are dismissed by VA raters.
This guide walks you through the complete process of obtaining a nexus letter, from gathering evidence to selecting a provider to submitting the letter with your VA claim.
Step-by-Step: How to Get a Nexus Letter
Step 1: Gather Your Evidence
Before contacting a nexus letter provider, assemble the records that will form the foundation of the medical opinion. The more complete your evidence package, the stronger the resulting nexus letter will be.
Essential records include:
- Service treatment records (STRs) — documenting in-service injuries, illnesses, complaints, or exposures relevant to your claim
- VA medical records — including treatment history, diagnostic evaluations, and any prior C&P exam reports
- Private medical records — any treatment records from non-VA providers that document your condition
- Current diagnosis documentation — a formal diagnosis of the condition you are claiming, from a qualified provider
- Buddy statements — lay evidence from spouses, fellow service members, or others who can attest to your symptoms, their onset, and their progression
- DD-214 — your discharge document confirming service dates, duty stations, and character of discharge
- Existing VA rating decisions — if you are pursuing a secondary claim, your current rating decision showing service-connected conditions
Organizing these records chronologically and highlighting relevant entries saves time during the medical record review and helps the provider identify the strongest evidence for your nexus opinion.
If you are missing records, you can request your service treatment records through the National Personnel Records Center (NPRC), your VA medical records through the VA Blue Button feature on My HealtheVet, and your private medical records directly from your treating providers.
Step 2: Choose a Qualified Medical Professional
Not all nexus letters carry equal weight. The VA evaluates nexus opinions based on the qualifications of the provider, the thoroughness of the medical rationale, and the relevance of the provider’s expertise to the condition being claimed.
Key factors in selecting a provider:
- Board certification in a relevant specialty — a psychiatrist for mental health claims, an orthopedist for musculoskeletal conditions, a pulmonologist for respiratory claims
- Familiarity with VA evidentiary standards — the provider must understand the “at least as likely as not” standard and structure their opinion accordingly
- Medical degree (MD or DO) — while nurse practitioners and physician assistants can write nexus letters, opinions from board-certified physicians generally receive greater probative weight from VA adjudicators
- Willingness to provide detailed rationale — avoid providers who offer template-based letters without individualized analysis
- Transparent pricing and process — reputable providers clearly disclose their fees, timelines, and what happens if a favorable opinion cannot be supported
The provider does not need to have treated you previously. Independent medical opinions (IMOs) from specialists who review your records and provide an expert assessment are standard practice in VA claims and are given full probative weight by VA adjudicators.
Step 3: Submit Records for Review
Once you have selected a provider, you will submit your medical and military records for review. This typically involves:
- Creating an account on the provider’s patient portal (VetNexusMD uses CharmHealth)
- Uploading your records securely through the portal
- Paying the medical record review fee (at VetNexusMD, this is $200)
- Completing any required intake forms describing your condition, symptoms, and service history
The record review fee is a standard industry practice that covers the provider’s time in reviewing your case to determine whether a supportable nexus opinion can be rendered. Reputable providers — including VetNexusMD — will not charge for the full nexus letter if they determine that a favorable opinion is not medically supportable.
Step 4: Medical Record Review
The provider reviews your submitted records to evaluate the strength of the evidence supporting the claimed nexus. This review includes:
- Assessment of your current diagnosis and its documentation
- Review of service treatment records for relevant in-service events or conditions
- Evaluation of the chronological progression from service to current condition
- Identification of any gaps in the evidence that may need to be addressed
- Determination of whether a favorable nexus opinion is medically supportable based on the available evidence
If the provider determines that additional records are needed — such as a current diagnostic evaluation, a sleep study, or updated treatment records — they will advise you before proceeding. If a supportable nexus opinion cannot be rendered based on the evidence, a reputable provider will inform you rather than issuing a weak or unsupported opinion that the VA will likely reject.
At VetNexusMD, Dr. Lee conducts each record review personally. He does not delegate this step to non-physician staff. This ensures that the physician who writes the nexus letter is the same physician who reviewed the records and formed the medical opinion — a detail the VA considers when evaluating the credibility of the opinion.
Step 5: Nexus Letter Preparation
If the evidence supports a favorable opinion, the provider prepares the nexus letter. A high-quality nexus letter includes:
- The provider’s qualifications, board certifications, and relevant expertise
- A summary of the medical records reviewed
- The veteran’s relevant medical history and symptom timeline
- Discussion of the specific medical mechanisms connecting the service event or service-connected condition to the claimed disability
- Citations to peer-reviewed medical literature supporting the connection
- A clear, unequivocal opinion statement using the VA’s “at least as likely as not” standard
- Explanation of why alternative causes do not fully account for the veteran’s condition
The letter is individually authored — not generated from a template — and tailored to the specific facts of the veteran’s case. Each nexus letter from VetNexusMD is written by Dr. Lee based on his personal review of the veteran’s records, ensuring the opinion reflects genuine medical analysis rather than formulaic language.
Step 6: Review and Submit to VA
After receiving your nexus letter, review it for accuracy. Confirm that all facts (dates, diagnoses, service-connected conditions) are correct. If any factual errors are present, contact the provider for correction before submission.
Submit the nexus letter as part of your VA claim package, along with all supporting evidence. The nexus letter can be submitted with:
- An initial claim (VA Form 21-526EZ) — for first-time claims for service connection
- A Supplemental Claim (VA Form 20-0995) — with new and relevant evidence after a prior denial
- A Higher Level Review (VA Form 20-0996) — note that new evidence generally cannot be submitted with an HLR, but an HLR can identify errors in how existing evidence was evaluated
- A Board of Veterans’ Appeals submission — for claims that have been through initial adjudication and HLR
You can submit evidence through your VA.gov account, through a Veterans Service Organization (VSO), or by mail. Electronic submission through VA.gov is generally the fastest method and provides a confirmation receipt.
Who Can Write a Nexus Letter?
Any licensed healthcare provider with the authority to render a medical opinion can write a nexus letter. However, the probative weight the VA assigns to the opinion varies based on the provider’s qualifications and expertise.
Board-Certified Physicians (MD/DO)
Opinions from board-certified physicians in specialties relevant to the claimed condition receive the highest probative weight. A board-certified psychiatrist writing a nexus letter for a mental health claim, for example, brings specialized training that VA adjudicators recognize as directly relevant to the medical question at issue. The American Board of Medical Specialties (ABMS) certification is the gold standard.
Nurse Practitioners (NP) and Physician Assistants (PA)
NPs and PAs can write nexus letters, and the VA does accept these opinions. However, when a VA examiner’s opinion conflicts with an NP or PA opinion, the VA may assign greater weight to the examiner — particularly if the examiner holds board certification in a relevant specialty. For contested claims or claims requiring specialized medical knowledge, a physician’s opinion provides a stronger foundation.
Your Own Treating Provider
A nexus letter from your treating provider — the physician who has managed your condition over time — can carry significant weight because they have direct clinical knowledge of your condition. However, treating providers are often unfamiliar with VA evidentiary standards and may not include the level of medical rationale that VA raters require. If your treating provider is willing to write a nexus letter, ensure they understand the “at least as likely as not” standard and the need for detailed supporting rationale.
What to Look for in a Nexus Letter Provider
The nexus letter industry includes both reputable providers and those who exploit veterans with low-quality, template-based products. Knowing the difference helps you avoid wasting money on a letter that will not advance your claim.
Green Flags
- Transparent pricing with no hidden fees
- Risk reversal — you do not pay for the nexus letter if a favorable opinion cannot be supported
- Board-certified physician writing the opinion
- Individually authored letters based on your specific records, not templates
- Literature citations included in the opinion
- Clear communication about the process, timeline, and what is needed from you
- HIPAA-compliant record handling through secure patient portals
Red Flags
- Guaranteed approval — no provider can guarantee a VA claim outcome, and any provider making this claim is being dishonest
- No record review — a provider who writes a nexus letter without reviewing your medical records is producing an opinion with no evidentiary foundation
- Template-based letters — if the same letter could apply to any veteran with minimal changes, it lacks the case-specific analysis the VA requires
- Non-physician providers claiming specialist-level authority
- Extremely low prices — while cost matters, a $100 nexus letter from an unknown provider is unlikely to reflect the time, expertise, and medical analysis required for a quality opinion
- No refund policy — providers who charge the full fee regardless of whether a favorable opinion is supportable are not aligned with your interests
- High-pressure sales tactics — reputable medical providers do not use aggressive sales techniques or create artificial urgency
How Much Does a Nexus Letter Cost?
Nexus letter pricing varies across the industry, typically ranging from $500 to $1,500+ depending on the provider’s qualifications, the complexity of the case, and the depth of analysis provided. Understanding what you are paying for helps you evaluate whether a provider’s pricing reflects genuine value.
At VetNexusMD, pricing is straightforward:
- Nexus Letter: $600
- Medical Record Review: $200
- DBQ (Disability Benefits Questionnaire): $150 (with telehealth evaluation for MA/FL residents; otherwise record-based only)
The $200 medical record review fee is applied toward the nexus letter cost if a favorable opinion is supportable. If Dr. Lee determines that the medical evidence does not support a nexus opinion, you are not charged beyond the $200 record review fee.
When evaluating pricing, consider what is included: the provider’s board certifications, the depth of record review, whether the letter includes literature citations, and whether a risk reversal policy is offered. A $600 nexus letter from a board-certified psychiatrist with full medical rationale provides substantially greater value than a $300 template letter from a non-specialist.
Be cautious of providers charging significantly above market rates ($2,000+) without a clear justification based on expertise or service level. The cost of a nexus letter should reflect the time, credentials, and quality of the medical analysis — not inflated marketing overhead.
How Long Does It Take?
Turnaround times vary by provider. At VetNexusMD:
- Standard turnaround — 1-2 weeks on average from the time of the $200 medical record review deposit and submission of your medical and military records
- Rush delivery — 2-4 business days, case dependent
Factors that affect turnaround include the volume and complexity of medical records to be reviewed, whether additional records are needed, and whether a telehealth evaluation is required as part of the process.
To minimize delays, submit a complete record package upfront. The most common cause of extended turnaround is incomplete records that require follow-up before the review can be completed. Organize your records clearly, label files descriptively, and include a summary of your claim with key dates and diagnoses.
How VetNexusMD Works
VetNexusMD is led by Dr. Ronald Lee, MD, a board-certified psychiatrist (American Board of Psychiatry and Neurology) with Harvard training. Dr. Lee specializes in psychiatric nexus letters for VA disability claims, with particular expertise in PTSD, depression, anxiety, sleep disorders, and other mental health conditions secondary to military service.
Our Process
- Contact us — Call (617) 506-3411 or visit our website. Dr. Lee is available for calls on Mondays and Fridays, with limited availability on some Wednesdays. If you reach voicemail, leave a message and your call will be returned promptly.
- Create your CharmHealth account — Sign up on our patient portal to securely submit your records
- Submit records and record review deposit ($200) — Upload your medical and military records and submit the record review fee through our secure Bluefin payment system
- Medical record review — Dr. Lee personally reviews your records and determines whether a supportable nexus opinion can be provided
- Nexus letter delivery — If a favorable opinion is medically supportable, Dr. Lee prepares and delivers your individually authored nexus letter with full medical rationale and literature citations
Risk Reversal
If Dr. Lee determines after reviewing your records that a supportable nexus opinion cannot be provided, you will not be charged beyond the $200 medical record review fee. You pay for the nexus letter only when a favorable opinion is medically supportable. This risk reversal policy ensures your interests are aligned with ours — we succeed when your claim succeeds.
Pricing
- Nexus Letter: $600
- Medical Record Review: $200
- DBQ (Disability Benefits Questionnaire): $150 (with telehealth evaluation for MA/FL residents; otherwise record-based only)
Common Mistakes Veterans Make When Getting a Nexus Letter
Even veterans who understand the importance of a nexus letter can undermine their own claims through avoidable errors. Knowing these common mistakes helps you navigate the process more effectively.
Waiting Too Long to Get a Nexus Letter
Many veterans file their initial claim without a nexus letter, relying on the C&P examination to establish the medical connection. This is a significant risk. C&P examiners are not advocates for your claim — they provide an independent medical opinion that may or may not support your case. Filing with a nexus letter already in your claims file ensures that a favorable medical opinion is part of the evidence before the C&P exam occurs, creating a higher standard that any contrary opinion must address.
Choosing a Provider Based on Price Alone
The cheapest nexus letter is rarely the best value. A \ letter from a non-specialist that gets dismissed by the VA costs you more — in delayed benefits and appeal expenses — than a \ letter from a board-certified specialist that results in a grant. Evaluate providers based on credentials, process quality, and track record, not just the price tag.
Submitting Incomplete Records
A nexus letter is only as strong as the evidence it is based on. Submitting incomplete or disorganized records forces the provider to work with gaps in the medical history, potentially weakening the opinion. Take the time to assemble a complete record package before starting the process.
Not Addressing Prior Denial Reasons
If you are filing a Supplemental Claim after a prior denial, the new nexus letter must specifically address the reasons for the prior denial. A generic nexus letter that does not account for the VA\’s stated rationale for denial is unlikely to change the outcome. Share your denial letter with your nexus letter provider so they can tailor the opinion to overcome the specific deficiencies identified by the VA.
Using a Provider With No VA Claims Experience
A brilliant physician who has never written a nexus letter may produce a medically sound opinion that nonetheless fails to meet VA evidentiary standards. The “at least as likely as not” language, the requirement for supporting rationale, the need to address alternative explanations — these are VA-specific requirements that providers without claims experience may not understand. Choose a provider who regularly writes nexus letters and understands the VA adjudication framework.
Frequently Asked Questions
How much does a nexus letter cost?
Nexus letter costs typically range from $500 to $1,500+ depending on the provider. At VetNexusMD, a nexus letter is $600, with a $200 medical record review fee. If a favorable opinion cannot be supported after record review, you are not charged beyond the $200 review fee. Learn more about nexus letter costs.
How long does it take to get a nexus letter?
At VetNexusMD, standard turnaround is 1-2 weeks on average from the time of the $200 medical record review deposit and submission of records. Rush delivery is available in 2-4 business days on a case-dependent basis.
Can I use a nexus letter from any doctor?
Yes, any licensed healthcare provider can write a nexus letter. However, the VA assigns greater probative weight to opinions from board-certified physicians in specialties relevant to the claimed condition. For mental health claims, a board-certified psychiatrist’s opinion carries the most weight. For musculoskeletal claims, an orthopedist’s opinion is strongest. The provider’s qualifications directly affect how the VA weighs their opinion against competing evidence.
Will a nexus letter guarantee my claim is approved?
No. No provider can guarantee a VA claim outcome, and any provider making this promise is being dishonest. A nexus letter is one piece of evidence in your claim — albeit often the most critical piece. However, claims supported by detailed nexus opinions from qualified specialists have significantly higher grant rates than claims submitted without medical nexus evidence. The nexus letter addresses the element most frequently missing from denied claims.
Can I use a nexus letter for a supplemental claim?
Yes. A new nexus letter constitutes “new and relevant evidence” that qualifies you to file a Supplemental Claim (VA Form 20-0995) after a prior denial. Many veterans who were initially denied have obtained favorable outcomes on supplemental claim when supported by a comprehensive nexus letter that addresses the specific reasons for the prior denial. This is one of the most common and effective uses of a nexus letter.
What conditions does VetNexusMD write nexus letters for?
VetNexusMD specializes in psychiatric nexus letters, including opinions for PTSD, depression, anxiety disorders, sleep disorders (including sleep apnea secondary to PTSD), and other mental health conditions. Dr. Lee’s board certification in psychiatry and neurology makes VetNexusMD particularly well-suited for claims involving the neuropsychiatric connections between service-connected conditions and mental health disabilities. For non-psychiatric conditions, we may be able to assist on a case-by-case basis — contact us at (617) 506-3411 to discuss your specific situation. Review our nexus letter examples for more information.