Presumptive conditions are one of the most veteran-friendly parts of the VA claims system, and one of the most under-used, because many veterans don't realize their condition, or their service history, qualifies.
Normally, a claim requires proving a "nexus," a medical link between your current condition and something that happened in service. For a presumptive condition, the VA skips that requirement entirely: if you served in a qualifying location during a qualifying time period and you have a current diagnosis of a condition on the presumptive list, the VA assumes the connection to service without you having to prove it yourself.
You still need a current medical diagnosis. You do not need a nexus letter.
Agent Orange (herbicide exposure) — Vietnam-era service, plus expanded locations added over time including Thailand, Laos, Cambodia, Guam, Johnston Atoll, and certain Blue Water Navy and C-123 aircraft service. Covers a range of cancers and other conditions, and has been expanded in recent years to include additional conditions like hypertension.
Burn pits and other airborne hazards (PACT Act) — Post-9/11 service in locations including Iraq, Afghanistan, Djibouti, Egypt, Jordan, Lebanon, Syria, Uzbekistan, and Yemen. The PACT Act (2022) added over 20 respiratory conditions and cancers to the presumptive list for this exposure category, and implementation has continued to expand since.
Gulf War illness — Service in the Southwest Asia theater (Iraq, Kuwait, Saudi Arabia, and surrounding areas/airspace) on or after August 2, 1990. Covers chronic multi-symptom illnesses that can't be tied to a single clinical diagnosis, along with a list of recognized conditions such as chronic fatigue syndrome, fibromyalgia, and certain functional gastrointestinal disorders. There are filing deadlines tied to this category, so it's worth checking current status rather than assuming you have unlimited time.
Camp Lejeune water contamination — Service of at least 30 cumulative days at Marine Corps Base Camp Lejeune or MCAS New River between August 1, 1953 and December 31, 1987. Covers exposure to contaminants including TCE, PCE, benzene, and vinyl chloride, and includes a separate benefit pathway for family members who lived on base during that period.
Radiation exposure — Certain occupational exposure circumstances, such as atomic testing participation or specific occupations involving radiation risk.
Prisoner of war status — Certain conditions are presumptive based on POW status alone, regardless of other exposure categories.
The VA's presumptive lists have expanded substantially and continue to be updated. Critically, your effective date, and therefore your back pay, is calculated from when you filed your claim or Intent to File, not from when your condition later becomes presumptive. Veterans who file now for a condition currently under review can end up with retroactive benefits calculated back to their original filing date once an expansion takes effect. Veterans who wait until a condition officially becomes presumptive often lose months or years of potential back pay in the meantime.
If you were previously denied for a condition that has since been added to the presumptive list, you may be able to file a Supplemental Claim citing the new presumption rather than starting over.
Since these lists and eligibility windows are updated regularly, confirm your specific exposure category and current eligibility at VA.gov, or with an accredited VSO, before assuming you either do or don't qualify.