This guide covers how the VA actually rates ibs / gut under diagnostic code 7319 — the criteria the rater applies, the evidence that carries weight, and the related conditions veterans most often leave unclaimed. It's the same playbook our own case managers work from.
How the VA rates it
Frequency-rated: 10% = abdominal pain tied to bowel movements at least once in the last 3 months · 20% = at least 3 days/month · 30% = at least 1 day/WEEK — each plus 2 or more of: stool frequency/form changes, straining or urgency, mucus, bloating, distension.
Honest ceiling: 30% at symptomatic days once a week or more.
The evidence that wins
Service connection: Gulf War vets: functional GI disorders are PRESUMPTIVE (MUCMI) — no nexus needed.
Medical opinion (nexus): Otherwise secondary to MH or medication side effects.
Filing it right the first time
Most denials on ibs / gut claims trace to the same failures: the evidence never addressed the actual rating criteria, the connection to service was asserted instead of supported, or the C&P exam went sideways because nobody prepared for it. A complete file — records, statements written to the criteria above, and honest exam preparation — is the difference.
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