In November 2024 the VA proposed a rewrite of the rating schedule's neurological section, the first in decades. It reworked the codes for epilepsy, Parkinson's, neuropathies, and a long list of others, and it reproduced the migraine code, Diagnostic Code 8100, word for word. The criteria you're rated under today are the same ones written in the era
the GAO described as 1945 medicine, and they turn on a word the regulation never defines.
Migraines are one of the most common conditions in post-9/11 claims, secondary to TBI, to PTSD, to neck injuries, to tinnitus, and the 50% rating at the top of the code is worth more than most veterans realize when it combines with everything else. It's also one of the ratings the VA most often assigns at 30% when the record supports 50%, or at 0% when it supports 30%. The difference is almost never the diagnosis. It's the documentation of a single word.
The four levels
Code 8100 has four steps:
- 0%: attacks less frequent than the 10% level.
- 10%: characteristic prostrating attacks averaging one every two months over the last several months.
- 30%: characteristic prostrating attacks averaging about once a month over the last several months.
- 50%: very frequent, completely prostrating and prolonged attacks productive of severe economic inadaptability.
Notice what the code doesn't ask. It doesn't ask how many headaches you have. It asks how many prostrating ones. A veteran with daily headaches who pushes through them at work can be rated 0%. A veteran with two attacks a month that put him in a dark room for six hours is at 30% on the face of the code and arguing for 50%.
What "prostrating" means, and who decides
The regulation doesn't define it. The VA's adjudication manual fills the gap with language about extreme exhaustion, powerlessness, debility, or incapacitation, and the courts have treated a prostrating attack as one that forces you to stop what you're doing and lie down. Not a headache you work through with ibuprofen. One that ends the day.
That definition lives or dies in the evidence. The C&P examiner's headache questionnaire asks whether you have "characteristic prostrating attacks" and how often, and the examiner checks a box based largely on what you tell them in a fifteen-minute visit. If you describe your headaches the way veterans tend to, understating them, the box gets checked at "less than once every two months" and the rating follows.
The C&P exam is a report being written about you, and this is the exam where that cuts deepest.
The 50% level, and the two phrases that keep veterans out of it
The top rating has three requirements stacked together: very frequent, completely prostrating and prolonged, and severe economic inadaptability. The Veterans Court has held that the levels of Code 8100 are successive, so you have to clear the 30% criteria before the 50% ones are evaluated. The two phrases that do the most damage are the last two.
"Prolonged" is about duration. The VA tends to read it as attacks that last longer than a typical migraine, which means your record should show how long, in hours or days, not just how often. A log entry that says "migraine" counts for less than one that says "migraine, 2 p.m. to 9 a.m., missed shift."
"Severe economic inadaptability" is the one the VA misreads most. It does not mean you can't work. The Veterans Court said so twenty years ago: the phrase describes a serious impact on your capacity to work, and a veteran who's employed can still meet it. If you've missed days, used leave, been written up, or moved to a job that tolerates absences, that's the evidence. Raters still deny 50% on the ground that the veteran is working. That denial is appealable, and it's one we win.
Medication, and the rule from earlier this year
Migraine claims collide with the medication question constantly. A veteran on a preventive like topiramate or a monthly injection may have fewer prostrating attacks, and the VA has a long habit of rating the medicated version of the condition.
We wrote about the Ingram decision and the VA's withdrawn attempt to rate around it: where the rating criteria don't mention medication, and Code 8100 doesn't, the VA can't lower your rating because the drugs are working. Your examiner should document the frequency of attacks with and without treatment where that's known, and your statement should say what the medication does and doesn't prevent.
Secondary service connection, where most of these claims live
Few veterans were diagnosed with migraines in service. Most of these claims are secondary: to a TBI, to PTSD and the sleep disruption that comes with it, to a cervical spine injury, to tinnitus and hearing loss, to medications for another service-connected condition. The chain has to be drawn by a medical opinion, and
the opinion has to engage with the literature on the specific link. A nexus letter that says "migraines are commonly associated with PTSD" loses to a C&P opinion that says "no objective basis." One that cites the mechanism and the veteran's own timeline wins.
If your TBI is service-connected, note that the TBI code specifically routes headaches with a distinct diagnosis to their own evaluation under 8100, separate from the TBI residuals rating. A migraine rating folded into a TBI rating is a rating you're owed twice.
What a winning migraine file contains
A headache log, kept contemporaneously, with date, start and stop times, severity, what you did (lay down, left work, went to the ER), and medication taken. Three months is good; a year is better. Employer records of absences or accommodations, or a statement from a supervisor. Pharmacy records showing abortive medication fills, which track attack frequency better than memory. Treatment notes where you told a provider about missed work or days in bed, because a rater weighs what you told a doctor over what you told the VA. And a
lay statement from someone who's watched an attack.
With that file, the 30% is routine and the 50% is a live argument. Without it, the examiner's box decides.
Where we come in
We're a veteran-led firm, and migraine ratings, especially the 30% that should be 50% and the secondary claims that got a "no objective basis" opinion, are a steady part of our appeals work. If your rating doesn't match the days you lose,
reach out.
