Glioblastoma is not on the VA’s presumptive list for Agent Orange, so a veteran claiming service connection between glioblastoma and Agent Orange exposure has to prove the medical link directly. The claim can still succeed, but it needs a strong nexus opinion from a qualified physician, documentation placing the veteran in a recognized exposure location, and, because of the disease’s prognosis, a request for terminal-illness priority processing so the VA decides the claim in time to matter.
Why Glioblastoma Is Not Presumptive
The VA keeps a list of diseases presumed to be caused by Agent Orange. For conditions on that list, the veteran only has to show qualifying service; the medical link is assumed. Glioblastoma is not there. The National Academies of Sciences has reviewed the evidence on Agent Orange and brain cancers several times and has consistently concluded that the evidence is “inadequate or insufficient” to determine whether an association exists. Brain cancers are relatively rare, and the studies have been too small to draw firm conclusions.
The current Agent Orange presumptive list includes bladder cancer, prostate cancer, respiratory cancers, and soft tissue sarcomas, but no brain cancers. One boundary is worth flagging: glioblastoma is presumptive under a different exposure pathway. The PACT Act of 2022 added it to the burn pit and toxic exposure presumptions for Gulf War era and post-9/11 veterans. A veteran who served in Southwest Asia and was exposed to burn pits has an easier path to a glioblastoma claim than a Vietnam-era veteran claiming Agent Orange.
What a Direct Service Connection Claim Requires
Because there is no presumption, the veteran must establish three elements: a current diagnosis of glioblastoma, an in-service event or exposure (Agent Orange contact), and a medical link between the two. The third element, the nexus, is where these claims are usually won or lost.
The Medical Nexus Opinion
A nexus opinion is a written statement from a qualified physician explaining why the veteran’s glioblastoma is connected to Agent Orange exposure. The VA will not accept a bare conclusion. The opinion has to show that the physician reviewed the service records, personnel file, and medical history. It should cite scientific literature or medical studies supporting the connection. And it needs the right probability language: the physician should state that the connection is “at least as likely as not,” meaning a 50 percent or greater probability. Softer phrases like “could be related” or “is possibly linked” carry little weight with adjudicators.
This is the hardest part of the claim. The same scientific uncertainty that kept glioblastoma off the presumptive list makes it difficult for physicians to point to definitive studies. Veterans often work with independent medical examiners who specialize in toxic exposure cases and know how to frame an opinion using emerging research and biological plausibility. Private nexus letters typically cost between $650 and $3,000, depending on the complexity of the case and the physician’s credentials.
Supporting Documentation
The claim also needs medical documentation (the formal diagnosis, pathology reports, operative reports, imaging, and current treatment records) and service evidence (DD-214, service treatment records, and anything placing the veteran at a qualifying exposure location). Unit records, deck logs, or personnel entries that confirm physical presence in an exposure area strengthen the claim significantly.
Where Agent Orange Exposure Is Presumed
Before the nexus argument even matters, the veteran has to establish that Agent Orange exposure occurred. The VA presumes exposure for service in specific locations during specific periods, with no additional proof of herbicide contact required.
- Republic of Vietnam: Service on land or inland waterways between January 9, 1962, and May 7, 1975.
- Offshore Vietnam waters: Service aboard a vessel operating not more than 12 nautical miles seaward from the demarcation line of the waters of Vietnam and Cambodia, during the same period. This was established by the Blue Water Navy Vietnam Veterans Act of 2019.
- Korean DMZ: Service in or near the Demilitarized Zone between September 1, 1967, and August 31, 1971.
- Thailand: Service on any U.S. or Royal Thai military base from January 9, 1962, through June 30, 1976.
- Laos: Service from December 1, 1965, through September 30, 1969.
- Cambodia: Service at Mimot or Krek, Kampong Cham Province, from April 16, 1969, through April 30, 1969.
- Guam and American Samoa: Service on these islands or in their territorial waters from January 9, 1962, through July 31, 1980.
- Johnston Atoll: Service on the atoll or on a ship that called there from January 1, 1972, through September 30, 1977.
The Thailand, Laos, Cambodia, Guam, American Samoa, and Johnston Atoll locations were added by the PACT Act. Veterans who served in these areas may not realize they now qualify for presumed herbicide exposure.
Filing the Claim
Veterans file for disability compensation using VA Form 21-526EZ, submitted online at VA.gov, mailed to the VA’s Claims Intake Center in Janesville, Wisconsin, or filed in person with an accredited Veterans Service Officer. Two procedural steps done before the full application matter to both the timeline and the payout.
Intent to File
Submitting VA Form 21-0966, Intent to File, sets a potential effective date for benefits up to one year before the full claim is completed. If the VA approves the claim, retroactive payments run back to the date the intent to file was processed. At the 100 percent rate, each month of retroactive pay is nearly $4,000, so filing the intent to file immediately after diagnosis protects a substantial amount of money.
Priority Processing for Terminal Illness
This is the step most veterans with glioblastoma should not skip. The VA offers priority processing for claims involving terminal illness. Veterans request it by submitting VA Form 20-10207 along with medical evidence showing the illness is terminal. Standard claims often take several months to a year or more; priority processing moves the claim to the front of the line. Given glioblastoma’s median survival time, waiting for a standard review can mean the veteran never sees the benefit. The VA’s National Call Center at 1-800-827-1000 can also help with priority requests.
Fully Developed Claims
Veterans who submit all their evidence at once, including the nexus opinion, medical records, and service records, can elect the Fully Developed Claims program for faster processing. The veteran certifies that no more evidence is forthcoming and agrees to attend any C&P exams. Submitting additional evidence later drops the claim back to standard processing.
The C&P Examination
The VA may schedule a Compensation and Pension exam. A VA or VA-contracted physician evaluates the veteran and offers an opinion on service connection and severity. For glioblastoma, the C&P examiner’s view on the nexus question can either back up or override a private nexus letter, so veterans should bring copies of all medical records, the private nexus opinion, and any exposure documentation to this exam.
The 100 Percent Rating and What It Pays
Active glioblastoma receives a 100 percent disability rating under Diagnostic Code 8002, which covers malignant brain tumors. That rating continues for two years after the veteran completes all surgical, chemotherapy, or other treatment. Some guides state a six-month period; that shorter window applies to soft tissue sarcomas under a different diagnostic code, not to malignant brain tumors.
A 100 percent rating pays $3,938.58 per month for a veteran with no dependents, effective December 1, 2025. A veteran with one child and no spouse receives $4,085.43 per month. Payments are tax-free and are not counted as gross income by the IRS.
Special Monthly Compensation
Veterans whose glioblastoma or treatment side effects leave them needing daily help with eating, dressing, or bathing may qualify for Special Monthly Compensation at the SMC-L level, also called Aid and Attendance. SMC-L pays $4,900.83 per month for a veteran with no dependents, or $5,281.24 for a veteran with a spouse and one child. SMC is paid on top of the base compensation.
A Note on Dependent Education Benefits
A temporary 100 percent rating for active cancer does not automatically qualify dependents for Chapter 35 Survivors’ and Dependents’ Educational Assistance. Chapter 35 requires the veteran to be rated permanently and totally disabled, which is a separate VA determination. Dependents do become eligible for DEA if the veteran dies from service-connected glioblastoma.
What Happens After Treatment
If the veteran survives treatment and the cancer goes into remission, the 100 percent rating stays in place for two full years after treatment ends. After that, the VA re-evaluates based on residual neurological symptoms, with a 30 percent minimum regardless of recovery.
Glioblastoma treatment commonly leaves lasting neurological deficits, and each is rated according to the affected body system. Seizures fall under the epilepsy diagnostic codes, ranging from 10 percent for a confirmed diagnosis with controlled seizures up to 100 percent for an average of at least one major seizure per month. Motor impairment, cognitive problems, and sensory deficits are rated separately and then combined, which often produces a total rating well above the 30 percent minimum. Veterans whose residuals prevent substantially gainful employment but whose combined rating falls below 100 percent may qualify for Total Disability Based on Individual Unemployability, which pays at the 100 percent rate.
If the Claim Is Denied
Denials are common in non-presumptive Agent Orange claims. The Appeals Modernization Act provides three lanes.
- Supplemental Claim (VA Form 20-0995): The veteran submits new and relevant evidence the VA did not previously consider. For glioblastoma, this usually means a stronger nexus opinion from a different physician or newly published research linking herbicide exposure to brain cancers.
- Higher-Level Review: A senior VA reviewer re-examines the same evidence for errors. No new evidence is allowed. This works best when the original denial misapplied the law or overlooked evidence already in the file.
- Board Appeal: A Veterans Law Judge at the Board of Veterans’ Appeals reviews the case. The veteran can choose direct review, submit additional evidence, or request a hearing. Board appeals take longer but provide the most thorough review.
Terminally ill veterans can also request priority processing at the Board level using the same VA Form 20-10207, sent to the Board’s address in Washington, D.C.
Survivor Benefits
Because of glioblastoma’s mortality rate, survivor benefits are often the most relevant part of a VA claim. Surviving spouses and dependent children may qualify for Dependency and Indemnity Compensation if the veteran died from a service-connected condition. If service connection was already established before death, the DIC claim is straightforward. If not, the survivor has to establish service connection as part of the DIC application, and the same nexus evidence challenges apply.
Eligibility and Rates
A surviving spouse qualifies if they were married to the veteran for at least one year, had a child with the veteran, or married the veteran within 15 years of discharge from the service period during which the illness began. The spouse must have lived with the veteran continuously until death, or, if separated, must not have been at fault. Surviving children qualify if they are unmarried and under 18, or under 23 if in school.
The base DIC payment for a surviving spouse is $1,699.36 per month, effective December 1, 2025. If the veteran was rated totally disabled for at least eight continuous years before death and the spouse was married to the veteran for those same eight years, an additional $360.85 per month is added. Each dependent child under 18 adds $421.00 per month. A surviving spouse who needs help with daily activities due to their own disability can receive an additional $421.00 for Aid and Attendance. All DIC payments are tax-free.
Accrued Benefits and Substitution
If a veteran dies with a pending VA claim or appeal, survivors can take over that claim through substitution. Benefits the VA owed the veteran at the time of death but had not yet paid are called accrued benefits and can be claimed by the surviving spouse or child. Survivors file for both DIC and accrued benefits using VA Form 21P-534EZ, along with the death certificate and supporting income information.
Preserving the Effective Date
Survivors should file VA Form 21-0966, Intent to File, as soon as possible after the veteran’s death to preserve a potential effective date. They then have one year to complete the full application on VA Form 21P-534EZ, submitted online at VA.gov or mailed to the VA’s Pension Intake Center in Janesville, Wisconsin.