On this page
- 38 CFR 3.317 expiration date: what December 31, 2026 means
- How VA rates Gulf War illness
- Gulf War presumptive conditions: undiagnosed illness and MUCMI
- Which service locations count for Gulf War illness?
- How to prove a Gulf War illness claim
- Are burn pit presumptions the same as Gulf War illness?
- Why VA denies Gulf War illness claims
- Questions veterans ask about Gulf War illness
- Does 38 CFR 3.317 expire on December 31, 2026?
- What is the VA rating for Gulf War syndrome?
- What are the Gulf War presumptive conditions?
- Does Afghanistan service count for Gulf War illness?
- Do I need a nexus letter for Gulf War illness?
- Can I file again if VA denied my Gulf War claim before the PACT Act?
- Bottom Line
- Sources and limits
Gulf War illness is the common name for a chronic undiagnosed illness or a medically unexplained chronic multisymptom illness, often shortened to MUCMI, in a veteran with qualifying Gulf War service. There is no single VA code for it. When a claim fits, the law presumes the link to service, and VA rates the illness by analogy to the code that best matches the symptoms.
Start with VA's current Gulf War illness guidance (opens in a new tab). The rules changed in 2022, so an older video or Board decision may describe a deadline or location list that no longer applies.
38 CFR 3.317 expiration date: what December 31, 2026 means
December 31, 2026 is not a deadline to file a Gulf War claim, and under the current statute it no longer limits when your illness can appear. The regulation still prints the date, which is why it causes confusion.
Section 3.317(a)(1)(i) requires the disability to have become manifest "either during active military, naval, or air service in the Southwest Asia theater of operations, or to a degree of 10 percent or more not later than December 31, 2026." That is a rule about when the illness appeared, not about when you file. VA has moved the date before: a 2016 rule (81 FR 71382) set it at December 31, 2021, and the interim final rule of September 14, 2021 (opens in a new tab) (86 FR 51000), made final on February 3, 2022 (87 FR 6038), moved it to December 31, 2026.
Then Congress changed the statute. Section 405 of the PACT Act, signed August 10, 2022, rewrote 38 U.S.C. § 1117(a)(1) (opens in a new tab) to cover a qualifying chronic disability "that became manifest to any degree at any time," and struck the subsection that let VA set a presumptive period. Board decisions apply the statute: an April 2025 decision says there is "no longer a requirement" to reach 10 percent by December 31, 2026 (Citation Nr. A25038766), and a May 2025 decision applies the "to any degree at any time" wording (Citation Nr. A25047021). Some decisions still quote the old regulation text, so if a decision on your claim relies on the 2026 date or the 10 percent threshold, point to § 1117(a)(1).
VA has not yet conformed the regulation. On October 1, 2024, it proposed rewriting § 3.317(a)(1) so a qualifying chronic disability may "manifest to any degree at any time" (89 FR 79815). As of October 6, 2026, that is still a proposal: the Federal Register shows no final rule and no further extension of the date, and the statute no longer depends on one. Other timing rules remain, including the six-month chronicity rule, the infectious-disease onset rules, effective dates and review deadlines.
How VA rates Gulf War illness
Under 38 CFR § 3.317(a)(5), VA rates a qualifying chronic disability using the criteria for "a disease or injury in which the functions affected, anatomical localization, or symptomatology are similar." The three illnesses the regulation names have codes of their own.
| Illness | Code | Rating levels |
|---|---|---|
| Chronic fatigue syndrome | DC 6354 (§ 4.88b) | 10, 20, 40, 60 or 100 percent |
| Fibromyalgia | DC 5025 (§ 4.71a) | 10, 20 or 40 percent |
| Irritable bowel syndrome and other functional digestive disorders | DC 7319 (§ 4.114) | 10, 20 or 30 percent |
An undiagnosed illness such as joint pain or headaches is rated by analogy to the code for the function affected, so the percentage follows the symptom. Separate disabilities each get a rating, but § 4.14 bars rating the same symptoms twice, and VA combines ratings under § 4.25.
Gulf War presumptive conditions: undiagnosed illness and MUCMI
An undiagnosed illness is a chronic disability whose signs or symptoms, "by history, physical examination, and laboratory tests cannot be attributed to any known clinical diagnosis." A MUCMI is a diagnosed illness "without conclusive pathophysiology or etiology," such as chronic fatigue syndrome, fibromyalgia, or a functional gastrointestinal disorder like IBS, so a diagnosis does not automatically rule out the presumption. Illnesses of partly understood cause, such as diabetes and multiple sclerosis, do not qualify.
Section 3.317(b) lists signs that may point to either category, including fatigue, headache, muscle and joint pain, neurological, sleep, gastrointestinal, respiratory, cardiovascular and skin symptoms. The disability needs "objective indications": signs an examiner can observe, or "other, non-medical indicators that are capable of independent verification." Do not label a symptom yourself, and do not ask a clinician to avoid a diagnosis. The governing texts are 38 U.S.C. § 1117 (opens in a new tab) and 38 CFR § 3.317 (opens in a new tab).
The six-month rule
Under § 3.317(a)(4), a disability that has lasted six months or more, or that improves and worsens in episodes over six months, counts as chronic. The six months run from the earliest date the evidence shows the symptoms began. Build a timeline of onset, flare-ups and the visits that document them, and do not turn an estimate made today into a log that looks years old.
Which service locations count for Gulf War illness?
For the undiagnosed-illness category, VA's current page lists service on or after August 2, 1990 in these locations.
- Bahrain, Iraq, Kuwait, the neutral zone between Iraq and Saudi Arabia, Oman, Qatar, Saudi Arabia, and the United Arab Emirates.
- The Arabian Sea, Gulf of Aden, Gulf of Oman, Persian Gulf, and Red Sea.
- Afghanistan, Egypt, Israel, Jordan, Syria, and Turkey.
The PACT Act added the last six countries to § 1117(f); the regulation's own definition still names only the first two groups. VA counts the airspace above the first two groups but not airspace-only service over the six added countries. The infectious-disease presumption has a narrower list that counts Afghanistan only for service on or after September 19, 2001, and PACT Act conditions have their own lists, so match the list to the claim.
How to prove a Gulf War illness claim
When the presumption applies, you do not need an opinion linking the illness to service. The medical question is whether a known diagnosis explains the symptoms or whether they form a MUCMI. Give the clinician your history and records, and ask what has been ruled out. If a known condition explains the symptoms, another service connection theory may fit that diagnosis.
| Question | What to collect or clarify |
|---|---|
| Qualifying service | Location, dates, duty records, and whether service was on the ground or in the air |
| Symptom pattern | Your actual symptoms, when they began, and how they changed |
| Chronicity | Records or observations spanning at least six months |
| Medical findings | Diagnoses, testing, and what the clinician says is or is not medically explained |
| Functional effects | Specific effects on work, sleep and daily activities |
| Prior VA decision | Exact issue, reason, and date if VA already decided it |
The PACT Act also added § 1117(d): when a Persian Gulf veteran at a VA medical facility presents with any one symptom associated with Gulf War Illness, VA staff must use a questionnaire designed to identify it. A DBQ documents findings; it does not guarantee the presumption applies.
Are burn pit presumptions the same as Gulf War illness?
No. The diseases listed in 38 U.S.C. § 1120, such as certain cancers and respiratory illnesses, have their own service rules, and 38 CFR § 3.320 separately covers asthma, rhinitis, sinusitis and nine rare respiratory cancers. A diagnosed disease such as pulmonary fibrosis belongs in that framework. See the burn-pit presumptive-conditions guide and pulmonary fibrosis page. Presumptive infectious diseases also have their own onset and service rules.
Why VA denies Gulf War illness claims
Across 23,780 decided Board rulings on Gulf War illness from 2021 to 2026, 13.7% were granted, 23.9% denied and 62.5% remanded. A ruling is one issue the Board decided in one decision; one decision often rules on several issues. That grant rate is 11.0 points below the 24.7 percent across all decided Board rulings, and remand is by far the most common outcome.
When the Board denied service connection, it most often found no current diagnosis or disability shown. When it remanded, the most common reason was an inadequate VA exam or opinion. The Board section below shows the denial and remand reasons, how the Board treated medical opinions, results by how the claim was argued, and results since 1992.
A known diagnosis explains the symptoms. In May 2025 the Board denied chronic fatigue syndrome because the examiner tied the fatigue to anemia, sleep apnea and PTSD that were already service connected (Citation Nr. A25041557).
No objective indications or no chronicity. Reported symptoms need signs an examiner can observe or indicators that can be independently verified, documented over at least six months.
Service not shown. The records do not place you in a covered location on or after August 2, 1990, or the service was airspace-only where VA does not count airspace.
Affirmative evidence of another cause. Under § 3.317(a)(7), the presumption fails if affirmative evidence shows the disability was not incurred during the qualifying service, came from a later event, or resulted from willful misconduct or alcohol or drug abuse.
An exam that skips the Gulf War question. This usually brings a remand. In April 2025 the Board sent a claim back because the VA opinion "does not address whether his shortness of breath represents an undiagnosed illness" or a MUCMI (Citation Nr. A25037561).
Questions veterans ask about Gulf War illness
Does 38 CFR 3.317 expire on December 31, 2026?
No, not in a way that ends Gulf War claims. The regulation still prints that date, but since the PACT Act, 38 U.S.C. § 1117 lets a qualifying chronic disability appear to any degree at any time. VA proposed removing the date in 2024 and, as of October 6, 2026, has not finalized that change or extended the date.
What is the VA rating for Gulf War syndrome?
There is no single rating. VA rates each qualifying chronic disability by analogy, such as DC 6354 for chronic fatigue syndrome (10 to 100 percent) or DC 5025 for fibromyalgia (10 to 40 percent).
What are the Gulf War presumptive conditions?
Chronic undiagnosed illnesses and MUCMIs, such as chronic fatigue syndrome, fibromyalgia and functional gastrointestinal disorders, lasting at least six months. Nine infectious diseases have a separate presumption under § 3.317(c), and burn pit conditions follow the PACT Act rules.
Does Afghanistan service count for Gulf War illness?
Yes. Since the PACT Act, service in Afghanistan on or after August 2, 1990 counts for the undiagnosed-illness presumption, but airspace-only service does not.
Do I need a nexus letter for Gulf War illness?
Not for the link to service when the presumption applies. You still need medical evidence that the disability is chronic and either unexplained by a known diagnosis or a MUCMI.
Can I file again if VA denied my Gulf War claim before the PACT Act?
Yes. VA says you can file a Supplemental Claim when it denied a condition it now considers presumptive; see VA's Supplemental Claim instructions (opens in a new tab). A change in law does not automatically reverse an old denial or pay back to the first application.
Bottom Line
The December 31, 2026 date in 38 CFR 3.317 was never a filing deadline, and since the PACT Act the statute lets a qualifying chronic disability appear to any degree at any time, even though VA has not yet updated the regulation. What decides the claim is the rest of § 3.317: covered service, a chronic disability with objective indications, and medical evidence that the symptoms are unexplained or form a MUCMI. VA then rates by analogy, so the percentage follows the symptom. Use the worksheet above, then Claim Raven's presumptive-conditions tool to organize the rule you need to check; a possible match is a research lead, not an eligibility decision.
Sources and limits
Checked October 6, 2026: VA Gulf War illness guidance (opens in a new tab), VA PACT Act guidance (opens in a new tab), 38 U.S.C. § 1117, section 405 of the PACT Act (Pub. L. 117-168), 81 FR 71382, 86 FR 51000, 87 FR 6038, the proposed rule at 89 FR 79815, and 38 CFR §§ 3.317, 3.320, 4.14, 4.71a, 4.88b and 4.114 in the eCFR current to October 2, 2026 (also in the official GPO daily eCFR Title 38 file (opens in a new tab)). Board figures come from Claim Raven's read of every Board decision from 2021 to 2026 that it holds, 511,036 decisions containing 1,378,030 rulings, including 23,780 decided Board rulings on Gulf War illness (23,987 rulings in all). The Board section on this page breaks these down by denial reason, remand reason, medical opinion, claim theory and era; those figures are computed from the data, not typed here. Historical Board outcome rates are not an individual probability of approval and are not used here to select a claim theory.