This guide covers how the VA actually rates migraines under diagnostic code 8100 — 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
50% = very frequent completely prostrating and prolonged attacks productive of SEVERE ECONOMIC INADAPTABILITY · 30% = characteristic prostrating attacks ~once a month over the last several months · 10% = less frequent.
Honest ceiling: 50% for frequent prostrating attacks affecting work.
The evidence that wins
Service connection: In-service onset, or secondary (TBI, neck, MH).
Medical opinion (nexus): Usually needed.
Secondary conditions veterans miss
Conditions that commonly develop because of this one can be service-connected on top of it:
- MH aggravation from chronic pain
Filing it right the first time
Most denials on migraines 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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