What You Need to Know About Agent Orange Exposure

Legally Reviewed by: Josh Conklin

You served near a base, a river, or a spray site decades ago, and now your doctor diagnoses you with hypertension, or a lab report mentions something called MGUS (monoclonal gammopathy of undetermined significance). Maybe the VA turned you down for one of these conditions years back, and you assumed that was the end of it.

Agent Orange exposure is no longer something you have to prove happened. If you served in a qualifying location during qualifying years, you meet the service test. If you also carry a diagnosis on the VA’s presumptive list, the connection is assumed. That single shift has reopened claims that were closed, and it may reopen yours too.

Capovilla & Williams built its reputation on the kind of endurance this fight requires, and a Veterans disability benefits lawyer on our team can tell you whether your case belongs back in front of the VA.

Key Takeaways

• Hypertension and MGUS were added to the Agent Orange presumptive list under the PACT Act, so you no longer have to prove the connection yourself.
• Qualifying service includes Vietnam, the Korean DMZ, Thailand, Laos, Cambodia, Guam, American Samoa, and Johnston Atoll, each with its own dates.
• A prior denial for hypertension does not end the conversation. A Supplemental Claim can reopen it and may pay retroactively to your original filing.
• You still need a current diagnosis and proof of qualifying service.

Not sure whether your service dates or your diagnosis qualify? Talk with our VA disability team before you file anything else.

What Counts as Agent Orange Exposure

Agent Orange was the herbicide the military sprayed across Vietnam to strip jungle cover. It carried dioxin, a chemical that settles into fat and organ tissue for years after contact. Under VA rules, exposure means you served somewhere the VA now recognizes as a spray or storage zone during the years it was used. It does not mean you have to remember touching a barrel or watching a low-flying plane.

That distinction matters more than many veterans realize. Plenty of men and women never saw the chemical and still qualify, because the presumption rests on location and time, not memory. It also means you do not need a nexus letter connecting the herbicide to your diagnosis, just proof of service and proof of a current diagnosis.

Where and When You Had to Serve to Qualify

The VA presumes Agent Orange exposure if your service falls into one of these windows:

• Republic of Vietnam, or a vessel not more than 12 nautical miles seaward from the demarcation line of the waters of Vietnam and Cambodia, between January 9, 1962, and May 7, 1975
• Any U.S. or Royal Thai base in Thailand, January 9, 1962, through June 30, 1976
• Laos, December 1, 1965, through September 30, 1969
• Cambodia at Mimot or Krek, April 16 through April 30, 1969
• Guam, American Samoa, or their territorial waters, January 9, 1962, through July 31, 1980
• Johnston Atoll, January 1, 1972, through September 30, 1977
• The Korean DMZ, September 1, 1967, through August 31, 1971

You may also qualify if you served in an Air Force unit assigned a C-123 aircraft with confirmed herbicide residue, or worked directly with Agent Orange at a continental U.S. testing or storage site.

If your DD-214 lists any of these, you meet the service requirement for presumptive exposure. Blue Water Navy veterans denied before 2019 gained new standing under the Blue Water Navy Vietnam Veterans Act, so an old denial is not necessarily the final word.

Hypertension and MGUS: The Two Conditions Everyone Is Asking About

The PACT Act added two conditions to the presumptive list that affect more Vietnam-era veterans than almost anything else on it. They sit alongside longstanding presumptive conditions like ischemic heart disease, type 2 diabetes, and Parkinson’s disease, and the same location and diagnosis rule applies to all of them.

Hypertension

High blood pressure is common enough that the VA spent years resisting a presumptive link to herbicide exposure. That resistance is gone. Hypertension is now presumptive for any veteran who meets the service and diagnosis requirements, and the VA rates it under its standard hypertension formula. A veteran with dependents at a meaningful rating can see real monthly income from a claim that would have gone nowhere before the law changed.

Monoclonal Gammopathy of Undetermined Significance (MGUS)

MGUS shows up on routine blood work far more often than it shows up as a complaint in a doctor’s office, since it rarely causes symptoms on its own. It is a precursor condition, not a disease, and the VA typically service-connects it without a compensable rating attached. What it does is put the connection on record, and that record matters if MGUS ever develops into multiple myeloma or a related blood cancer.

If a blood test just handed you an unfamiliar acronym, our VA disability team, led by attorney Josh Conklin, can tell you whether it may strengthen a claim you already have or if it could open a new one.

If the VA Denied You Before

A denial from 2015 or 2019 was correct under the rules that existed then. That does not mean it is correct now.

Capovilla & Williams’ motto, Vincit qui patitur, translates to “he who endures wins,” and few fights test endurance quite like one that started decades ago.

How to File or Refile Your Claim

Filing looks the same whether this is your first claim or your fifth denial.

1. Get your DD-214 or separation record showing your service dates and location.
2. Get a current diagnosis of hypertension or MGUS from any licensed provider, VA or private. The VA may still schedule a compensation and pension (C&P) exam to confirm severity, even though it will not question whether Agent Orange caused it.
3. File online through VA Form 21-526EZ, or submit a Supplemental Claim if you were denied before these conditions were added to the list.
4. Submit an Intent to File first if you are still gathering records, since it can protect your effective date while you wait.

Common Questions About Agent Orange Claims

Can I get VA disability for hypertension if I only developed it decades after my service?

Yes, as long as your service falls within a qualifying window and you have a current diagnosis. The VA does not require the condition to appear within a set number of years after service ended. File online, or talk with an attorney first if your DD-214 does not clearly show your service location.

Does MGUS pay a monthly VA disability check on its own?

Usually not, since MGUS is a precursor condition rather than a disabling one, and the VA typically rates it at 0%. It still matters because the service connection stays on record if MGUS develops into multiple myeloma later.

What is the difference between a Supplemental Claim and a formal appeal?

A Supplemental Claim asks the VA to look at your case again using new evidence, like the fact that hypertension is now presumptive. It usually moves faster than a formal Board appeal. You will need evidence that is both new and relevant to file one.

What if my DD-214 does not show that I served in Thailand or Guam?

A lot of separation paperwork leaves out short temporary duty assignments. Buddy statements, unit rosters, and deployment orders can fill that gap. This is where in-house investigators may help, since they can track down records a veteran often cannot get to alone.

Capovilla & Williams: A VA Disability Law Firm

You may have carried this condition, named or not, since before most of the VA’s current rules existed. Paperwork should not be the reason it stays unresolved. Josh Conklin and the VA disability team at Capovilla & Williams match old DD-214 to a new presumptive list and build the file the VA never built the first time around. The firm’s motto, Vincit qui patitur, translates to “he who endures wins,” and a diagnosis that took forty years to surface deserves a claim that does not take many more.

Contact our firm today, and let’s find out what your claim may be worth.