Conditions
The migraine VA claim: why one word decides your rating
Migraines rate under a single diagnostic code, and your whole percentage turns on one word: prostrating. Here is what it means, why so many veterans land at 0 or 10 percent, and how to build the record for more.
You get migraines that put you in a dark room and shut down your day. You file. The letter comes back at 0 percent, or 10. It feels like the VA does not believe you, or does not think migraines are a real disability.
That is usually not what happened. The rating almost always turns on a single word in the regulation, and most veterans have never been told which word or what it means. Once you see how migraines are scored, you can see exactly why your number came out the way it did, and what the record would need to show for more.
The short version
Migraines are rated under one code, Diagnostic Code 8100. Your percentage is decided by two things: how often your attacks happen, and whether they are prostrating. That word, prostrating, is what separates a 0 from a 30. If your records do not use it, or something like it, the rater has nothing to rate.
The one code that rates every migraine
The VA rates migraine and headache conditions under 38 CFR §4.124a, Diagnostic Code 8100. There are only four rating levels, and the exact wording of the regulation is what a rater applies. Here is what it says, verbatim:
| Rating | The regulation's exact words |
|---|---|
| 50% | Very frequent completely prostrating and prolonged attacks productive of severe economic inadaptability |
| 30% | Characteristic prostrating attacks occurring on an average once a month over last several months |
| 10% | Characteristic prostrating attacks averaging one in 2 months over the last several months |
| 0% | Less frequent attacks |
Fifty percent is the ceiling. There is no 70 or 100 under this code. That surprises a lot of veterans, but it is worth knowing up front so you are aiming at the right target and not fighting for a number that does not exist here.
What "prostrating" actually means
The regulation never defines prostrating, which is exactly why it trips people up. In plain terms, a prostrating attack is one that stops you cold. You cannot keep working, keep driving, or keep doing what you were doing. You have to lie down, get away from light and sound, and wait it out. A headache you push through with a pill and a coffee is real pain, but on paper it is not prostrating.
This is the hinge of the whole claim. A veteran with three bad migraines a month can still land at 0 percent if every treatment note just says "headache" and never describes the shutdown. The rater is not being cruel. They can only rate what the record shows, and "headache" does not tell them the attack was prostrating.
Why you got 0 or 10
Two common reasons. One, your records say "headaches" but never describe an attack forcing you to stop and lie down, so nothing reads as prostrating. Two, the frequency is not documented, so the rater cannot tell whether you average one attack every two months or several a month. Fix either and the picture changes.
Frequency is the other half, so log it
Look at the criteria again and you will see frequency doing half the work. Once every two months gets 10 percent. Once a month gets 30. "Very frequent" gets 50. So the second thing your record needs, right alongside the word prostrating, is a believable count of how often the attacks hit.
The cleanest way to prove frequency is a headache log you keep yourself. It does not need to be fancy. For each attack, write down four things:
| Log this | Because it shows |
|---|---|
| Date and time it started | Frequency, the once-a-month vs once-in-two-months line |
| How long it lasted | Whether attacks are "prolonged," which the 50% level needs |
| What you had to stop doing | That it was prostrating, not a headache you worked through |
| Work or duty missed | Economic impact, which the 50% level needs |
Keep it for a few months before your exam if you can. A dated log in your own hand is lay evidence, and the VA is required to consider it. It also gives your C&P examiner and the rater the two facts the code actually asks for, in one place.
The 50 percent level and "severe economic inadaptability"
The top rating adds a phrase that stops most claims short of it: severe economic inadaptability. In plain words, your migraines have to interfere with your ability to hold or keep work, not just ruin individual days. This is where the "work or duty missed" column of your log matters, along with anything showing lost jobs, reduced hours, or a boss's statement. You do not have to be unemployed to reach 50, but the record has to show the attacks are frequent and disabling enough to drag on your working life.
Getting the migraine service connected
A rating only matters once the migraine is service connected, meaning the VA agrees your military service caused or aggravated it. There are three common paths:
Direct. The headaches started in service and are documented, or you can tie them to a specific in-service event. Sick-call visits, deployment records, and buddy statements all help here.
Secondary. This is the path many veterans miss. Under the regulations VA applies, a condition caused by another service-connected condition can itself be service connected. Migraines commonly ride in behind a traumatic brain injury (TBI), a neck or cervical spine condition, or even a medication you take for another rated disability. If you already have one of those service connected, a migraine claim secondary to it can be the stronger play.
The nexus. For a secondary claim, and for a direct claim without clear in-service records, you usually need a medical opinion linking the migraines to service or to the other condition. That link is called a nexus. Our guide on nexus letters walks through what a good one says.
Where to verify this yourself
Do not take our word for the criteria. Read Diagnostic Code 8100 in the regulation at 38 CFR §4.124a, and read how to file and what evidence helps on VA.gov. If your migraine rating does not match what your records and your log actually show, that is worth raising with a free accredited representative, because the fix is often evidence, not argument.
See what your migraine record is missing
The VA Claims Copilot can walk you through what a Diagnostic Code 8100 claim needs, help you build a headache log, and prep you for the questions a C&P examiner will ask about prostrating attacks. Or upload your decision letter and it will explain your actual migraine rating in plain English.
This is general education, not legal advice, and not from the VA. Your claim depends on your records, your evidence, and your exam. For advice on your specific situation, work with a free VA-accredited representative or a Veterans Service Organization. We are not the VA and are not affiliated with the VA.