From the Nevada desert to the Pacific atolls, thousands of American service members were ordered to participate in nuclear weapons tests, occupy contaminated Japanese cities, or clean up after nuclear accidents — often with little to no protection and no explanation of the risks. These "atomic veterans" carried invisible injuries for decades, developing cancers and other serious diseases at elevated rates. The VA recognizes a broad list of radiogenic diseases as presumptively service-connected for veterans with qualifying radiation exposure. If you or a family member served in any of the covered locations during the covered periods, this guide explains exactly how the benefit system works, what the presumptive conditions are, and how to file a winning claim in 2025.
The term "atomic veteran" refers to any U.S. military service member who was exposed to ionizing radiation as a result of their military service. This category is broader than many veterans realize — it encompasses not just those who were present during nuclear detonations, but also those who participated in cleanup operations, occupied contaminated areas, or were stationed at locations affected by nuclear accidents.
The VA identifies several categories of radiation-risk activities that may give rise to radiogenic disease presumptives:
Service members who participated in or were present at atmospheric nuclear weapons tests conducted by the United States or its allies between 1945 and 1962. This includes personnel who:
U.S. service members who entered and occupied Hiroshima or Nagasaki, Japan for the purpose of occupying those cities before July 1, 1946. The residual radiation in both cities following the atomic bombings created significant exposure risk for American occupation forces in the months after August 1945.
American POWs who were held near Hiroshima or Nagasaki and were exposed to residual radiation from the bombings. This is a narrow category requiring documentation of POW status and location relative to the detonation sites.
Service members who participated in the cleanup of Enewetak Atoll in the Marshall Islands between 1977 and 1980. Enewetak was the site of 43 nuclear tests and contained significant residual radioactive contamination. Cleanup crews were exposed to fallout particles, contaminated soil, and irradiated coral during the remediation operation.
Service members who responded to or were present during nuclear weapon accidents, including:
The primary regulations governing radiation exposure claims are 38 CFR 3.309(d), which establishes the list of radiogenic disease presumptives, and 38 CFR 3.311, which governs the radiation exposure claims process including dose reconstruction for non-presumptive conditions. Together, these regulations create two distinct pathways for veterans with radiation exposure.
The VA has defined specific locations and time periods that constitute qualifying radiation-risk service. Service at these locations during the specified periods creates a presumption of significant radiation exposure:
| Location | Time Period | Exposure Type |
|---|---|---|
| Nevada Test Site | January 27, 1951 – October 31, 1958; July 1962 – November 1962 | Atmospheric nuclear tests |
| Pacific Proving Grounds (Bikini, Enewetak, other Pacific atolls) | June 30, 1946 – April 25, 1962 | Atmospheric nuclear tests, fallout |
| Hiroshima, Japan | August 6, 1945 – July 1, 1946 | Residual radiation from atomic bombing |
| Nagasaki, Japan | August 9, 1945 – July 1, 1946 | Residual radiation from atomic bombing |
| Enewetak Atoll (cleanup) | January 1, 1977 – December 31, 1980 | Residual fallout, contaminated materials |
| Palomares, Spain | January 17, 1966 – March 31, 1967 | Nuclear weapon accident, plutonium contamination |
| Thule Air Base, Greenland | January 21, 1968 – September 25, 1968 | Nuclear weapon accident, plutonium contamination |
The PACT Act of 2022 also expanded the list of qualifying locations and time periods — see the PACT Act section below for details on these additions.
Under 38 CFR 3.309(d)(2), veterans with qualifying radiation-risk service who develop one of the following conditions are presumptively service-connected — meaning the VA assumes the condition was caused by radiation exposure without requiring additional medical proof of causation.
The regulation takes a broad approach: any malignant tumor in a veteran with qualifying radiation exposure is presumptively service-connected. This includes virtually all solid tumors and hematologic malignancies. The major exception is chronic lymphocytic leukemia (CLL), which is excluded from the radiogenic disease presumptive list under 38 CFR 3.309(d) — though CLL may qualify under other PACT Act presumptives.
Specifically enumerated in 38 CFR 3.309(d)(2) are:
In practice, the "all other malignant tumors" language means that any diagnosis of cancer — if you have qualifying radiation-risk service — can form the basis of a presumptive claim. The key is having documentation of your presence at a qualifying location during the covered period.
A radiogenic disease is one that can be caused by ionizing radiation. The VA's presumptive framework doesn't require you to prove your specific tumor was caused by radiation — only that you were at a covered location during the covered period and that you have a diagnosis of a covered disease. The regulatory presumption handles the causal link.
For radiation exposure claims that don't fit neatly within the 38 CFR 3.309(d) presumptive framework — either because the condition isn't on the presumptive list, or because service was at a location not explicitly listed — the VA employs a process called dose reconstruction under 38 CFR 3.311.
When a veteran files a radiation claim that requires dose reconstruction, the VA refers the claim to the Defense Threat Reduction Agency (DTRA) — the successor to the Defense Nuclear Agency, which oversaw many of the nuclear test programs. DTRA uses historical records, test data, atmospheric modeling, and veterans' service records to estimate the total radiation dose the veteran likely received.
The dose reconstruction takes into account:
Once DTRA produces a dose estimate, the VA's Under Secretary for Benefits makes a determination on whether the estimated dose — combined with the veteran's specific cancer type — creates a meaningful risk of causation. If so, the claim is granted. If not, the claim may be denied at the dose reconstruction stage.
Many veterans have experienced frustrating dose reconstruction outcomes. DTRA estimates are based on models and historical records that may not accurately reflect an individual's true exposure, particularly for veterans who performed unusual duties, worked in contaminated areas for extended periods, or whose records were lost or incomplete. A low dose estimate can result in a denied claim even for a veteran with a highly radiogenic cancer type.
This is why the presumptive framework in 38 CFR 3.309(d) is so valuable — it bypasses dose reconstruction entirely for veterans with qualifying service locations.
Even veterans who don't have service at one of the officially designated qualifying locations can file a radiation exposure claim under 38 CFR 3.311 if they have any documented radiation exposure during military service. This includes:
For non-presumptive claims, the dose reconstruction process under 38 CFR 3.311 is the primary pathway. The veteran must submit documentation of their radiation exposure, and the VA (through DTRA) will estimate the dose and assess whether the veteran's condition is likely related to that exposure.
Non-presumptive radiation claims have a lower success rate than presumptive claims, but they remain viable — particularly for veterans with documented high-dose exposures or for cancers with strong dose-response relationships to radiation.
The Sergeant First Class Heath Robinson Honoring our Promise to Address Comprehensive Toxics (PACT) Act of 2022 significantly expanded the VA's presumptive frameworks for radiation and other toxic exposures. Key radiation-related changes include:
The PACT Act directed VA to review and expand the list of qualifying radiation-risk locations. Additional sites with documented nuclear contamination or testing activity were added to the presumptive framework, and the VA was directed to conduct ongoing review of additional sites that may warrant inclusion.
The PACT Act also added expansive cancer presumptives under its toxic exposure provisions that may apply to veterans regardless of their radiation exposure history — specifically for veterans who served in post-9/11 combat zones with documented exposure to airborne hazards. These provisions are separate from the radiogenic disease presumptives but may provide an alternative or additional pathway for veterans who developed cancer after service in covered locations.
Veterans who were previously denied radiation claims may be eligible to have those claims reconsidered in light of the PACT Act's expanded presumptive framework. If your claim was denied before August 2022, it may be worth submitting a supplemental claim with the new regulatory authority cited. Use the PACT Act tool to check your eligibility.
Filing a radiation exposure claim requires the standard disability compensation application form plus additional documentation specific to radiation claims:
File your Intent to File (VA Form 21-0966) first to lock in your effective date, then gather documentation. The DTRA records search process can take several months, so starting early is important. If you're unsure whether your specific duty location qualifies, a VSO or VA-accredited claims agent experienced in radiation claims can help you research the applicable regulations and evidence requirements.
Use the rating estimator to understand what disability percentages might apply to your specific conditions before filing.
Whether you were at a Nevada Test Site detonation, occupied Japan in 1945, or helped clean up Enewetak, the VA has a presumptive pathway designed for you. Start your claim today.
Start Your Claim →If your radiation claim was denied because the dose reconstruction produced an insufficient estimated dose, you have several options:
You are entitled to receive the DTRA dose reconstruction report used to evaluate your claim. Request this report through your VA representative or through a Freedom of Information Act (FOIA) request. Review the assumptions used in the model — particularly the distance from the detonation, duration of exposure, and shielding assumptions. Errors in these inputs can significantly affect the dose estimate.
Health physicists and radiation medicine specialists can perform independent dose assessments based on your service records and any available personal dosimetry data. An independent expert report that challenges DTRA's methodology or assumptions can form the basis of a supplemental claim or appeal.
If new evidence is available — including an independent dose assessment, newly located unit records, buddy statements, or additional dosimetry data — file a supplemental claim under VA Form 20-0995 with the new and relevant evidence attached.
Radiation claim appeals that involve complex dose reconstruction issues may benefit from the Board of Veterans' Appeals hearing docket, where a Veterans Law Judge can review all the evidence and hear testimony. A VA-accredited attorney experienced in radiation claims can help structure a compelling appeal.
Radiation-related cancers and diseases are rated under the same disability rating schedule as other conditions. Key rating benchmarks for common radiation conditions in 2025:
Given that many radiation claims involve serious cancers, the potential monthly benefit can be substantial. For veterans with dependents or special monthly compensation needs, rates increase further. Use the rating estimator to calculate your potential benefit amount.
If you participated in nuclear weapons testing, occupied Hiroshima or Nagasaki, served at Enewetak, Palomares, or Thule, or had any other documented radiation exposure during military service, take these steps: