VA Disability: Irritable Bowel Syndrome

Reviewed by Jonathan Teplitsky · Updated June 2026

How does the VA rate IBS?

The VA rates irritable bowel syndrome under 38 CFR § 4.114, Diagnostic Code 7319 (irritable colon syndrome). There are three rating levels — 0%, 10%, and 30% — and 30% is the maximum schedular rating IBS can receive on its own. There is no 50%, 70%, or 100% rating for IBS by itself. Your level is decided by how often you have bowel disturbance and how constant your abdominal distress is.

IBS VA rating criteria (DC 7319)

The jump from 10% to 30% turns on two words: frequent versus constant. To reach 30%, your records and exam should show diarrhea (or alternating diarrhea and constipation) paired with abdominal distress that is nearly always present, not just flaring now and then. You can read the full schedule at the 38 CFR Part 4 source.

The Gulf War presumptive — the pathway most veterans miss

This is the biggest thing to know about IBS claims. IBS is a functional gastrointestinal disorder, and under 38 CFR § 3.317 it is presumptively service-connected for veterans with qualifying service in the Southwest Asia theater (the Gulf War presumptive). That means you do not have to prove a specific in-service cause or pinpoint exactly when or why your IBS started. If you have a current IBS diagnosis and qualifying Gulf War service, the law presumes the connection.

Many veterans assume they need a nexus letter tying IBS to a single event in their service records. For Gulf War-era veterans, that burden is often lifted entirely. See our Gulf War Illness guide for who qualifies and which functional GI disorders are covered. Note: the PACT Act expanded toxic-exposure presumptions but did not change DC 7319 — the Gulf War presumptive for IBS predates it.

IBS secondary to PTSD and mental health

The gut and the brain are tightly linked (the gut-brain axis), and IBS is one of the most common conditions granted secondary to a service-connected mental-health condition. If you are already rated for PTSD, anxiety, or depression, IBS that developed or worsened as a result can be service-connected on a secondary basis. IBS can also arise secondary to medications you take for another service-connected condition. A medical nexus letter explaining the secondary link is the key piece of evidence here.

The C&P exam and the intestinal DBQ

Your C&P exam for IBS uses the VA's intestinal-conditions Disability Benefits Questionnaire (DBQ). The examiner documents your diagnosis, how frequently you experience bowel disturbance, whether you have diarrhea, constipation, or both, and how constant your abdominal distress is. Because the 7319 criteria hinge on frequency and constancy, the exam findings often decide whether you land at 10% or 30%.

Walk in prepared. Bring a symptom diary covering several weeks: how many days you had flares, the type of bowel disturbance, and how often abdominal pain was present. Vague answers tend to produce vague exams. If you have a private GI provider, a completed DBQ for IBS from them can support the claim alongside the VA exam.

How to get IBS service-connected

Outside the Gulf War presumptive, a direct IBS claim needs three things:

• A current diagnosis of IBS, documented in your medical records.
• An in-service event, injury, or onset — or a qualifying presumptive pathway (Gulf War service, or a secondary link to a service-connected condition).
• A medical nexus connecting the two, typically a physician's opinion that your IBS is at least as likely as not related to service.

Gulf War-era veterans should lead with § 3.317 — it is the fastest route. Veterans with service-connected PTSD or similar conditions should pursue the secondary pathway and obtain a nexus opinion.

A note on abdominal pain

There is no standalone abdominal pain VA rating. Abdominal pain is rated as part of the underlying condition that causes it. For IBS, abdominal distress is a core element of the 7319 criteria — the more constant it is, the higher the rating. If your abdominal symptoms stem from a separate diagnosed condition (such as GERD or a hernia), that condition is rated under its own diagnostic code, and the VA cannot rate the same symptoms twice (pyramiding).

Estimate your combined rating

IBS at 30% rarely stands alone. If you also carry ratings for PTSD, GERD, or other conditions, use our VA disability rating calculator to see how they combine — VA math is not simple addition.