What is a presumptive condition under the PACT Act?

A presumptive condition is one that VA presumes was caused by qualifying military service, such as exposure to burn pits, Agent Orange, or contaminated water. If you served in a covered time and place and have a listed condition, VA accepts the service connection without requiring you to prove how the exposure caused it. The PACT Act of 2022 expanded the list of presumptive conditions and the qualifying locations for toxic exposure.

Do you need a nexus letter for a presumptive condition?

Generally no. For a presumptive condition, VA already presumes the link between your service and the condition, so a private nexus letter establishing causation is usually not required. You still need a current diagnosis and proof of qualifying service. A nexus letter is mainly used for direct-service-connection claims where the link is not presumed.

VA Toxic Exposure and Presumptive Claims

Everything you need in one place to understand VA toxic-exposure claims and presumptive conditions. The PACT Act of 2022 greatly expanded the list of presumptive conditions and qualifying service for burn pits, Agent Orange, and more, so many veterans no longer have to prove how an exposure caused their condition. Start with the PACT Act and a presumptive check, then dig into each exposure type and how to file.

Start here

The PACT Act

What the 2022 law changed and which presumptive conditions and locations it added.

Presumptive Check

See whether your condition and service may qualify for a presumption.

Burn pits and airborne hazards

Gulf War Presumptives

Burn pit and airborne-hazard presumptions for Gulf War and post-9/11 service.

Exposures by MOS

Common toxic exposures tied to your military job and duties.

Agent Orange and herbicides

Agent Orange Presumptives

Conditions VA presumes from herbicide exposure in Vietnam and other locations.

Chronic Disease Presumptives

Chronic conditions presumed service-connected when they appear within set timeframes.

Water and chemical

Camp Lejeune

Conditions presumed from the contaminated water at Camp Lejeune.

PFAS Exposure

Per- and polyfluoroalkyl substances from firefighting foam and base water.

Radiation and POW

Radiation Presumptives

Conditions presumed from ionizing-radiation exposure during qualifying service.

POW Presumptives

Conditions presumed service-connected for former prisoners of war.

Gulf War illness

Gulf War Illness Guide

Undiagnosed and chronic multisymptom illness from Gulf War service.

Service context

Combat Service Claims

How combat service affects proof of exposure and in-service events.

Guard and Reserve Claims

How exposure claims work for National Guard and Reserve members.

Filing and appealing exposure claims

Toxic Exposure Appeals

How the Board has decided burn pit, herbicide, and water-exposure appeals.

TERA Exceptions

Toxic Exposure Risk Activity and when the exam and review apply.

Related conditions

Cancer Claims Guide

How VA rates cancers, many of which are presumptive after toxic exposure.

Presumptive does not mean automatic. Even when your condition is on a presumptive list, you still need a current diagnosis and proof of qualifying service. The presumption removes the burden of proving how the exposure caused the condition, not the need to file a claim and show the diagnosis.

This hub is for educational purposes only and is not legal advice. For official guidance on the PACT Act and presumptive conditions see VA.gov. For help with your claim, find a VSO representative near you.

Related Tools and Guides

Conditions Guide

Browse plain-English claims guides for common service-connected conditions.

Cancer Claims Guide

How VA rates cancers, many presumptive after toxic exposure.

How Claims Work

The VA claim process from filing to decision, in plain language.

Nexus Letters

When you need a nexus letter, and when a presumption means you do not.