More than 5 million veterans have completed VA's Toxic Exposure Screening since it launched, and 2.1 million of them, 43%, reported at least one likely exposure during service. Yet many of those same veterans hit a wall when they sit down to file: their unit's environmental records are gone, their service treatment records never mention burn pits or contaminated water, and no doctor ever wrote the words "toxic exposure" in a chart. That gap feels like the end of the claim. It is not. The PACT Act and decades of VA case law both recognize that a veteran's own sworn word, and the word of the people who served beside them, can carry a claim when paper records cannot.
Key Takeaways
- Understand that presumptive conditions under the PACT Act do not require proof of exposure, only proof of qualifying service location and dates.
- Gather lay and buddy statements early, since 38 CFR 3.159 treats credible firsthand testimony as competent evidence, not a lesser substitute for records.
- Request a formal record search through the National Personnel Records Center before assuming documentation does not exist.
- Use VA's Toxic Exposure Screening results and DD Form 214 to establish service dates and locations tied to known hazard sites.
- File a Fully Developed Claim when evidence is complete, or a Standard Claim when VA needs to help track down remaining records.
- Prepare for the C&P exam by bringing a written symptom timeline, since exam notes often become the strongest evidence in the file.
Table of Contents
- Who Qualifies for a Toxic Exposure Claim
- Building Evidence Without a Paper Trail
- Choosing the Right Filing Strategy
- Step-by-Step: Submitting the Claim
- After Filing: Exams, Decisions, and Appeals
 |
From the AVOY VA Benefits Mastery Library Burn Pits, Agent Orange & the PACT Act covers this in full depth, with step-by-step guidance for exactly this situation. Get the Book → |
Who Qualifies for a Toxic Exposure Claim
The pain point for most veterans is assuming exposure has to be proven with a lab report or an environmental hazard log. Under the PACT Act (Public Law 117-168), signed August 10, 2022, Congress created a category of presumptive service connection specifically to remove that burden. For a long list of conditions, from certain respiratory illnesses to specific cancers, VA presumes exposure happened if a veteran served at a qualifying location during a qualifying period. Once that service is established, the veteran does not have to separately prove the exposure itself.
This is formalized under 38 U.S.C. § 1119, which created the Toxic Exposure Risk Activity, or TERA, presumption. TERA covers veterans who performed a "covered activity," such as burn pit operations, in a designated location. Eligibility is checked against DD Form 214 dates and duty stations, not against medical documentation of the hazard.
Presumptive vs. Direct Service Connection
Two paths exist. A presumptive claim relies on the location-and-date match described above, and it is the faster, lower-evidence route when a condition is on VA's current presumptive list. A direct service connection claim is still available for conditions not yet presumptive, but it requires the traditional three-part showing: a current diagnosis, an in-service event or exposure, and a medical nexus linking the two. Veterans without medical records most often fall into this second category, which is why the evidence strategies in the next section matter so much. Always confirm the current presumptive list on VA.gov, since Congress and VA continue to expand it.
Building Evidence Without a Paper Trail
The pain point here is real: many burn pit and contamination sites were never formally logged, and unit records from decades-old deployments are often incomplete or destroyed. VA's own data shows the scale of the gap, with millions of veterans reporting exposures that never made it into a service record. The solution is a layered evidence file that does not depend on a single missing document.
Lay Statements and Buddy Statements
Under 38 CFR 3.159, lay evidence is legally competent when it comes from someone who personally observed or experienced the facts being described. A veteran's own statement about smoke, burning waste, or contaminated water they encountered daily is admissible evidence, not a substitute for evidence. The precedent case Buchanan v. Nicholson, 451 F.3d 1331 (Fed. Cir. 2006), held that VA cannot reject credible lay testimony solely because the witness is not a medical professional or has a personal relationship with the veteran. A strong personal statement describes what was seen, smelled, and experienced, and how symptoms began. Buddy statements from fellow service members who were stationed at the same location add independent corroboration and should describe specific, dated observations rather than general impressions.
Requesting Records That May Still Exist
Before concluding records do not exist, request a formal search. The National Personnel Records Center (NPRC) can search for morning reports, deployment orders, and unit histories that were never part of the individual service treatment record. VA Form 21-4142 authorizes VA to request private and military treatment records directly. Environmental and industrial hygiene records for some bases have also been digitized and may confirm burn pit or water contamination activity at a specific installation and time frame, even when a veteran's personal medical file is silent on the issue.
Choosing the Right Filing Strategy
The choice between a Standard Claim and a Fully Developed Claim (FDC) affects both processing speed and how much of the evidence-gathering burden falls on the veteran. VA reports that FDC claims have historically processed faster than standard claims because the veteran certifies that all evidence has already been submitted, allowing VA to skip its own record-gathering step.
When to File Standard Instead
An FDC only makes sense when the evidence file is genuinely complete: lay statements are signed, buddy statements are gathered, private treatment records are attached, and any nexus evidence is in hand. If service records are still missing and a veteran needs VA's help requesting them through official channels, a Standard Claim is the better choice. Filing an FDC prematurely, before evidence is truly complete, can slow a claim down rather than speed it up, since VA may still need to develop the file despite the certification.
Filing an Intent to File (VA Form 21-0966) before either claim type locks in an effective date for up to one year, protecting potential back pay while the rest of the evidence is assembled.
Step-by-Step: Submitting the Claim
Steps 1 Through 3
- File an Intent to File (VA Form 21-0966) immediately to lock in the earliest possible effective date.
- Confirm qualifying service dates and locations against the current PACT Act presumptive list on VA.gov.
- Assemble lay and buddy statements describing the exposure, the onset of symptoms, and day-to-day functional impact.
Steps 4 and 5
- Request outstanding records through the NPRC and submit VA Form 21-4142 for any private medical records tied to the condition.
- Submit VA Form 21-526EZ as either a Standard Claim or Fully Developed Claim, attaching every statement and record gathered.
Each step builds on the last. Skipping the Intent to File step is the most common, and most costly, mistake, since it can mean losing months of retroactive back pay even when the underlying claim is eventually approved.
After Filing: Exams, Decisions, and Appeals
The C&P Exam
Most toxic exposure claims are routed to a Compensation & Pension (C&P) exam, and for claims built on lay evidence rather than a thick medical file, this exam often becomes the single most influential piece of evidence VA will consider. Arrive with a written timeline of when symptoms started, how they have progressed, and how they affect work and daily life. Consistency between the personal statement, the buddy statements, and what is said in the exam room strengthens the file; contradictions weaken it.
If the Claim Is Denied
If VA denies the claim or assigns a rating lower than expected, veterans have options rather than a dead end. A Supplemental Claim allows new and relevant evidence, such as a buddy statement gathered after the original filing, to be added. A Higher-Level Review asks a senior reviewer to take a fresh look at the same evidence for legal or factual error. An appeal to the Board of Veterans' Appeals is available for more complex disputes. Each path has its own evidence rules and timelines, so understanding which one fits the specific denial reason matters before choosing a direction.
Take the Next Step
Missing records do not have to mean a missing claim. The Free VA Claim Readiness Test at avoyvet.com walks through service dates, symptoms, and available evidence to help identify which presumptive categories may apply and where evidence gaps still need to be filled. Visit avoyvet.com and ask AVOY Veteran Navigator AI™ for educational guidance on toxic exposure claims, PACT Act presumptions, and evidence strategy before submitting.
Frequently Asked Questions
Can I file a toxic exposure claim if my service treatment records never mention it?
Yes. Most burn pit and contamination exposures were never documented in individual service treatment records because they were environmental conditions at a base or deployment site, not medical events treated at the time. What matters most for a presumptive claim is confirming the location and dates of service against VA's current presumptive list. For conditions not on that list, a personal statement describing the exposure, combined with buddy statements and any available unit or deployment records, can fill the gap left by silent medical records.
What makes a buddy statement effective for a toxic exposure claim?
An effective buddy statement is specific, not general. It should identify the exact base or deployment location, the approximate dates of shared service, and a firsthand description of the environmental conditions, such as burn pit smoke or water quality issues. It should also describe any symptoms the writer personally observed in the veteran during that time. Vague statements that simply say "I served with him and he seemed fine" carry far less weight than a detailed, dated account of specific conditions and observations.
Do I need a nexus letter if my condition is on the PACT Act presumptive list?
Generally, no. The purpose of a presumptive condition is to remove the need for a nexus letter connecting the condition to a specific in-service event. Once qualifying service dates and locations are established, VA presumes the connection. A nexus letter becomes important again if the condition is not on the current presumptive list and the claim must proceed under direct service connection instead, which still requires a medical opinion linking the diagnosis to service.
How do I find out if my old base or deployment location qualifies under the PACT Act?
VA maintains a list of presumptive exposure locations and qualifying date ranges on VA.gov, and this list has been updated multiple times since the PACT Act became law in 2022. Cross-reference the duty stations and dates listed on your DD Form 214 against that current list. Because the list continues to expand, a location that did not qualify at an earlier date may qualify now, so it is worth checking again even if a previous claim was denied.
What if the National Personnel Records Center says my records were destroyed?
A negative record search is not the end of the claim. Request written confirmation of the search results, since this documentation itself can support the claim by establishing that records are unavailable through no fault of the veteran. At that point, lay evidence, buddy statements, and any surviving unit-level documentation become the primary evidence. VA is required to assist in developing the claim and cannot deny it solely because official records could not be located.
Should I file a Standard Claim or Fully Developed Claim when I am still waiting on some records?
If evidence is still being gathered, particularly records requested through the NPRC or private providers, a Standard Claim is usually the better fit, since it allows VA to continue its own record-development process alongside the veteran's efforts. A Fully Developed Claim requires certifying that all evidence has already been submitted, and filing that certification prematurely can create delays if VA later determines the file was not actually complete.
How much does the Toxic Exposure Screening at VA.gov affect my claim?
The screening itself is a health questionnaire, not a claims form, and completing it does not file a claim. However, the results can help identify which exposures and symptoms are relevant to document further, and the screening record can become part of the broader evidence picture. It is a useful starting point for organizing a claim, but it should be paired with a personal statement, buddy statements, and formal VA Form 21-526EZ filing to actually initiate the claims process.
Educational information only — not legal, medical, or claim representation, and not affiliated with the U.S. Department of Veterans Affairs. For help filing or appealing, contact a VA-accredited VSO (often free), claims agent, or attorney. For current rates, forms, and deadlines, see VA.gov.
