Skip to main content
Education · Toxic exposure and presumptive

Cancers and Environmental Exposures

Quick summary
Many cancers are linked to military environmental exposures. Several are now presumptive under the PACT Act and other VA rules.
What this guide covers
  • The concept
  • Related on this site
By the editorial deskUpdated Jul 5, 2026Sources verified Jul 5, 2026

A cancer diagnosed decades after service often feels impossible to connect to it. For the recognized exposures, the law expects the delay: Agent Orange, burn pits, Camp Lejeune water, and ionizing radiation each carry presumptive cancer lists, and an active cancer on one of them is generally rated 100 percent during treatment without a separate nexus opinion.

The concept

Cancers can develop years after a military exposure. VA recognizes certain cancers as presumptively connected to qualifying exposures, including Agent Orange, burn pits, contaminated water at Camp Lejeune, ionizing radiation, and other hazards. Presumption means VA presumes the link without requiring the veteran to separately prove it.

Categories of recognized exposures

  • Agent Orange and other herbicides, including expansions under the PACT Act.
  • Burn pits and airborne hazards during service in Southwest Asia and certain other locations under the PACT Act.
  • Camp Lejeune contaminated water between August 1953 and December 1987.
  • Ionizing radiation, including atmospheric nuclear testing and certain occupational exposures.
  • Gulf War service connected to undiagnosed and chronic multisymptom illnesses.

What you usually need

A current cancer diagnosis from a qualifying medical provider, evidence of qualifying service such as DD-214 and service personnel records, and confirmation that the diagnosis appears on the relevant presumptive list.

Active cancer rating

Most cancers are rated 100 percent during active treatment under the appropriate diagnostic code. After active treatment ends, VA schedules a residuals examination, and the rating may be reduced based on residuals.

Working with an accredited representative

Presumptive lists are detailed and change over time. An accredited representative can confirm coverage, identify residuals worth rating separately, and watch for connected claims such as survivor benefits.

Related on this site

For questions about your specific ratings or decision, contact your Veterans Service Officer (VSO), an accredited claims agent, or an accredited attorney. Browse the accredited representative directory or verify a representative's accreditation before sharing your records.
This is an educational estimate and not a guarantee of benefits, ratings, or back pay. VA makes all final determinations. We are not a law firm, VSO, accredited claims agent, or VA representative. We provide educational information only and encourage veterans to seek accredited help for individual claim advice. The Veteran Benefit Desk™ is a veteran founded independent digital publication and education platform that helps veterans understand VA disability claims, ratings, evidence, and appeals using clear explanations, original research, and cited public sources.
Printed from The Veteran Benefit Desk - https://veteranbenefitdesk.com/education/cancers-and-environmental-exposures. Figures reflect this page as published. Rates change each December; confirm current amounts at veteranbenefitdesk.com before relying on them.
We use only strictly necessary, first-party cookies. No advertising or cross-site tracking cookies run on this site. We use limited first-party, cookieless measurement to understand site performance and prevent abuse: no third-party pixels, no ad profiling, and no selling or sharing of personal information for behavioral advertising. We honor Global Privacy Control signals automatically, and if we ever add optional cookies, the choice you save here will govern them. Read our Privacy Policy.