What Form 21-4138 is for
The Statement in Support of Claim is the one place in your file where you speak. Medical records show data points; your statement connects them into a story a rater can follow — when it started, how it progressed, and what it costs you daily. Lay evidence is legally competent evidence for things you can observe yourself: pain, sleep, mood, limits.
A structure that works
- Identify — name, file number, and the condition this statement supports (one statement per condition keeps the file clean).
- Onset — the in-service event or period, with dates, units, and locations as best you recall.
- Continuity — symptoms from service to now; explain treatment gaps honestly ("no insurance 2012–2015; self-treated with...").
- Current impact — specific, measurable daily effects.
- Certify and sign.
Specific beats dramatic
Raters read thousands of statements. Vague intensity ("unbearable pain") registers less than concrete detail:
- Weak: "My back hurts all the time and ruins my life."
- Strong: "I wake at 3–4 a.m. from back spasms four nights a week. I stopped coaching my son's team in 2023 because I can't stand longer than 20 minutes. I've moved to desk-only duties at work."
Your statement must match your medical records and what you say at the C&P exam. Contradictions — even innocent ones — are the fastest way to lose credibility across the whole file. Reread your records before writing.
Buddy statements (Form 21-10210)
Statements from people who witnessed the event or the change in you fill record gaps powerfully — a squadmate who saw the injury, a spouse describing the sleep and mood changes since deployment. Same rules: specific, dated, firsthand, signed.
Starter template
"I am submitting this statement in support of my claim for [condition]. During my service with [unit] at [location], on or about [date], [event]. Since that time I have experienced [symptoms with frequency]. Today, this condition affects me by [three concrete daily impacts]. I certify the foregoing is true to the best of my knowledge."
Write it in your own words — templates start the engine; your specifics drive the rating. Ready to put it in the file? Back to the filing guide.