Migraines: VA Rating Criteria

Plain-language guide

What this rating actually turns on

The entire migraine rating hinges on one word the regulation never bothers to define: prostrating. Diagnostic Code 8100 counts how often your attacks reach that threshold, and at the top tier whether they produce severe economic inadaptability. The schedule’s exact triggers are frequency averages “over [the] last several months”, one prostrating attack every two months, one a month, and “very frequent completely prostrating and prolonged attacks” (38 CFR 4.124a). The CFR leaves “prostrating” undefined, but VA’s adjudication manual fills the gap: “causing extreme exhaustion, powerlessness, debilitation or incapacitation with substantial inability to engage in ordinary activities”, and “completely prostrating” as “extreme exhaustion or powerlessness with essentially total inability to engage in ordinary activities” (M21-1, Part V, Subpart iii, Chapter 12, Section A, quoted in this Board of Veterans’ Appeals decision). In plain terms: a headache you push through at work is not prostrating; a headache that puts you in a dark room is.

The 50% tier’s “severe economic inadaptability” does not mean unemployable. The M21-1 defines it as “a degree of substantial work impairment,” including use of sick leave or unpaid absence, and the Court of Appeals for Veterans Claims held the criterion is met if attacks are capable of producing it (Pierce v. Principi, 18 Vet. App. 440 (2004), both cited in the same Board decision). The manual also pegs “very frequent” as attacks averaging less than one month apart.

A worked example

A Navy veteran keeps a headache log for six months before her exam. It shows roughly ten headaches a month, but that raw count is not what gets rated. Reading the log, the examiner sorts them: most are ordinary headaches she works through with medication and coffee. On average once a month, though, one hits that she cannot push through, she leaves work or never makes it in, draws the blinds, lies down in the dark, and cannot function until it passes hours later. Those are the prostrating attacks.

The whole rating pivots on that word. Ten headaches a month sounds like a lot, but the schedule only counts attacks that cause the “substantial inability to engage in ordinary activities” the M21-1 describes. Her log and her testimony establish characteristic prostrating attacks averaging once a month over the last several months, which is the exact language of the 30 percent tier, so this lands at 30 percent, not because she has few headaches but because one prostrating attack a month is what the record proves. Had she documented that those lay-in-the-dark attacks were very frequent, completely prostrating and prolonged, with a sick-leave record showing they were costing her work, she would be arguing the 50 percent tier instead. The gap between 30 and 50 is not more headaches; it is prostrating attacks frequent and disabling enough to show severe economic inadaptability.

What the C&P exam measures

The examiner completes the Headaches (Including Migraine Headaches) DBQ. It records symptoms (nausea, light/sound sensitivity, vision changes), typical duration, and then the questions that decide the rating: characteristic prostrating attacks, with frequency checkboxes (less frequent / once in 2 months / once a month / more than once a month); the same frequency scale for completely prostrating attacks; and impact on ability to work. The form itself notes diagnostic testing is not required for the exam. Those checkboxes map almost one-to-one onto the 8100 tiers, so the exam largely turns on the frequency history you report.

What to have in your file

• A headache log: date, duration, what you could not do (left work, lay down, slept), medication taken. The M21-1 recognizes that your own testimony about symptoms and limitations can establish prostration (Board decision quoting M21-1 V.iii.12.A.3).
• Treatment records showing prescriptions, ER or urgent-care visits, and reported frequency.
• Work evidence for the 50% tier: sick-leave records, attendance records, employer statements showing missed or shortened workdays.

Common mistakes

• Reporting raw headache count instead of prostrating attack count. The schedule rates only attacks meeting that threshold (38 CFR 4.124a).
• Minimizing at the exam. The frequency boxes the examiner checks track the rating tiers directly.
• Assuming 50% requires being unable to work. It requires substantial work impairment, not unemployability (Board decision).
• Gaps in treatment records during the “last several months” window the schedule measures.

Worth knowing

50% is the highest rating DC 8100 offers (38 CFR 4.124a). The Headaches DBQ is a public form your own provider can complete. Migraines often combine with other ratings, run the combined-rating calculator to see what a 30% or 50% migraine rating actually changes.

If your rating came back lower than this

A decision that ignores the criteria above is a frequent reason veterans are underpaid. Line your decision up against the levels on this page. If the evidence supports a higher level than VA assigned, you have three ways to challenge it, and the right one depends on why it went wrong:

• Something was missing from the record (an exam finding, a prescription, a flare-up statement, a nexus letter): add it with a Supplemental Claim.
• The evidence was already there and VA misread it: ask for a Higher-Level Review by a more senior rater, with no new evidence needed.
• A legal or judgment error: take it to the Board of Veterans' Appeals.

Before you file, recombine this rating with your others (VA math does not add ratings), check how long each lane is taking right now, and remember a VA-accredited representative or VSO will help you for free. You can also browse every other condition's criteria to make sure you are claiming everything you are owed.