Toxic exposure: Radiation
Radiation Exposure and VA Disability Claims
Atomic veterans and cleanup crews were exposed to radiation in service. For certain cancers and certain jobs, the VA treats the link as presumptive. That means you do not have to prove it.
Other radiation claims are decided one at a time, using an estimate of your dose. Either way, a clear record of your exposure moves the claim. A medical opinion helps where the link is not automatic.
Medically reviewed by the Patriot Path Medical Team
Licensed MD and PhD reviewers • Last updated: June 2026
How veterans were exposed to radiation
Exposure came from nuclear weapons tests, the occupation of Hiroshima and Nagasaki, work at certain nuclear plants, and the cleanup of old test sites. Some veterans were also around depleted uranium.
For a recognized radiation-risk job, the VA presumes that certain cancers are tied to service. For other cancers and jobs, the VA estimates your dose and weighs each case on its own. That is where good evidence and a medical opinion matter.
Who qualifies, and what it means for you
If you meet the rule and have a listed condition, this is likely presumptive and you do not need a nexus letter. If not, there is still a path. Check yours.
Are you in the presumptive window?
Check the rule and your condition. Two answers and you will know whether this is likely a presumptive claim or one that needs a nexus letter. Orientation only, not a claim decision.
Who qualifies
Radiation-risk activities, including atmospheric nuclear testing, the occupation of Hiroshima and Nagasaki, and certain gaseous diffusion and cleanup sites.
Some cancers are presumptive for a radiation-risk activity; others are reviewed case by case using a dose estimate.
Where this exposure can still win a claim
Many conditions are tied to the specific chemicals you were exposed to, not just to a program name. That is the opening when you are not presumptive.
The chemicals you were exposed to, and what they cause
Radiation and depleted uranium carries chemicals that also show up in other exposures. Some conditions they cause are already presumptive for a different program. If you have one of these and you are not presumptive here, you are not stuck. The same science can support a direct service-connection claim, which is exactly what a nexus letter is for.
Also found in: nuclear testing, certain duty stations, and radiation-risk activities.
Linked conditions
- Leukemia (other than CLL)
- Thyroid cancer
- Breast cancer
- Lung cancer
- Bone cancer
Already presumptive under Radiation (38 CFR 3.309(d)). If you were exposed to ionizing radiation a different way, you do not get that presumption, but a physician can connect these conditions to your exposure with a nexus letter. It is decided case by case, which is why the medical opinion matters.
This shows possible pathways, not a decision on your claim. Whether a condition connects to your exposure is a medical judgment, made case by case. It is not medical or legal advice.
How a nexus letter fits
When a claim is not presumptive, you win it by direct service connection. Under 38 CFR 3.303, that needs three things: a current diagnosis, an in-service exposure, and a medical opinion tying them together.
The opinion has to clear one standard: “at least as likely as not,” a 50% or better chance the condition is tied to service. That comes from the benefit-of-the-doubt rule in 38 U.S.C. 5107(b), carried out in 38 CFR 3.102. The PACT Act goes further: for a non-presumptive condition tied to a qualifying toxic exposure, the VA must order an exam and a medical opinion. That opinion is the nexus, and it is what we write.
Related condition guides
Secondary conditions
A radiation-related cancer can lead to other ratable conditions, including depression. We look for those secondary claims too.
Frequently asked questions
Which radiation claims are presumptive?
For a recognized radiation-risk job, certain cancers are presumptive. They include most leukemias (one slow-growing type is excluded), plus thyroid, breast, lung, and bone cancer, among others.
What is a radiation-risk activity?
A set list of duties, such as taking part in nuclear weapons tests, the occupation of Hiroshima or Nagasaki, or service at certain nuclear sites. The VA's rule names the duties that qualify.
My cancer is not on the presumptive list. Can I still claim it?
Yes. The VA estimates your radiation dose and decides the claim case by case. A medical opinion that weighs your dose against your cancer is often the deciding piece.
What about depleted uranium?
Veterans near vehicles hit by friendly fire, or who handled damaged equipment, may have been exposed. The VA has a follow-up program, and these claims are reviewed on their facts.
My radiation claim was denied. What now?
Denials often turn on the dose estimate or the link to your condition. A medical opinion and a complete exposure record can address both on appeal.
Does Patriot Path help with radiation claims?
Yes, especially the case-by-case claims that need a medical opinion. The first consultation is free.
Were you exposed to radiation and depleted uranium?
Let’s figure out your path together. The first consultation is free, and we will tell you straight whether a nexus letter can help your claim.
Sources & regulatory references
- Radiation-related diseases (VA Public Health) https://www.publichealth.va.gov/exposures/radiation/diseases.asp
- 38 CFR 3.309, Disease subject to presumptive service connection (eCFR) https://www.ecfr.gov/current/title-38/section-3.309