By Michael Shemtoub, trial attorney, Beverly Law. Updated November 2026.
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What Social Security looks for in a TBI claim
Social Security pays only for long-term disability. Its rule is that you cannot do the work you did before or adjust to other work, and the condition is expected to last at least one year or result in death. It does not pay for partial or short-term disability (SSA, Disability Benefits).
Listing 11.18 in SSA’s Blue Book can be met in two ways, each lasting at least three consecutive months after the injury:
- Disorganized motor function in two arms or legs, causing extreme limitation in standing up from a seated position, balancing while standing or walking, or using the arms.
- A marked limitation in physical functioning plus a marked limitation in one area of mental functioning: understanding, remembering or applying information; interacting with others; concentrating, persisting or maintaining pace; or adapting or managing oneself.
“Marked” is the fourth point on SSA’s five-point scale, meaning you are seriously limited in doing the activity on your own and on a sustained basis. If the injury causes only mental limits, SSA evaluates it under the mental disorders listings in section 12.00. Meeting a listing is one route. SSA’s basic test still asks whether you can do the work you did before or adjust to other work.
Why SSA waits after a brain injury
SSA’s TBI section says it generally needs evidence from at least three months after the injury. If it cannot decide then, it defers the decision until it has evidence from at least six months after the injury. The agency also says processing a disability application takes on average six to eight months, and for SSDI there is generally a five-month waiting period, with the first payment for the sixth full month after the date SSA finds your disability began (SSA). Applying early starts the clock.
SSDI and SSI compared
| SSDI | SSI | |
|---|---|---|
| Who it is for | Workers who paid Social Security taxes long enough and recently enough | People with low income and few resources; work history not required |
| What decides eligibility | Your work credits; SSDI is funded through payroll taxes | Your income and resources; resources of $2,000 or less for one person, $3,000 for a couple |
| Health coverage | Medicare automatically after two years of benefits | Medicaid may come with SSI |
Sources: SSA blog on SSDI and SSI, SSA SSI booklet, SSA Disability Benefits.
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Short-term state benefits in California and Washington
SSDI generally does not pay for the first five months, but two of the three states where we practice have their own wage programs.
- California State Disability Insurance pays partial wage replacement to eligible workers who cannot work because of an illness or injury that is not work-related. Benefits are 70% to 90% of the wages earned 5 to 18 months before the claim start date, for up to 52 weeks. You must have had at least $300 in wages with SDI withheld, be unable to do your regular work for at least eight days and have a physician or practitioner certify the disability (EDD).
- Washington Paid Family and Medical Leave covers your own serious health condition that prevents you from working. You need 820 hours worked in the qualifying period. Medical leave is up to 12 weeks in a claim year, paying up to 90% of weekly pay subject to a cap of $1,647 a week in 2026, and there may be an unpaid waiting week (Washington Paid Leave).
If the brain injury happened at work, workers’ compensation rules apply instead; see our guides on Washington work injuries and Texas employers without workers’ comp. Texas cases are handled by the firm’s Texas-licensed attorneys, Joyce Ondich and John Efstathiou.
How disability benefits and an injury claim affect each other
The answer runs in both directions.
Your benefits and the injury case. SSI is need-based, so a settlement can affect it. SSA’s operations manual treats an award as unearned income in the month received, deducts amounts such as medical expenses needed to obtain the award, and counts what is left as a resource starting the next month (POMS SI 00830.515). SSA disregards up to $100,000 in an ABLE account for SSI (SSA), and special needs trusts under Section 1917(d)(4)(A) of the Social Security Act are outside the usual SSI trust rules (SSA). SSDI is different. SSA says workers’ compensation and other public disability benefits, including state temporary disability benefits, may reduce SSDI so that the total does not exceed 80% of your average current earnings, while disability payments from private sources do not (SSA).
The injury case and your benefits. Each state has a collateral source rule that generally keeps benefits from an independent source from shrinking what the at-fault party owes, with exceptions set by statute. California applies it to payments “from a source wholly independent of the tortfeasor” (Helfend, 1970). The Texas Supreme Court describes it as precluding any reduction in a tortfeasor’s liability because of benefits the plaintiff received from someone else (Haygood, 2011). Washington applies it to payments whose origin is independent of the wrongdoer (Ciminski v. SCI Corp., 1978).
What this means for your case
If you cannot work, apply for the benefits you may qualify for now and keep the claim against the at-fault party moving on its own track. Tell your injury lawyer about every benefit you receive, because SSI rules and repayment questions shape how a settlement should be structured. Keep pay stubs and the records SSA asks for, since the same documents support a lost wages claim. For timing, see how long brain injury cases take, and for value, how much a brain injury case is worth. More answers are in our injury FAQs.
Common questions
Does a concussion qualify for Social Security disability?
Only if its effects keep you from working and are expected to last at least a year. SSA does not pay for partial or short-term disability.
Can I get SSDI and an injury settlement?
Yes. SSDI eligibility rests on your work record, and SSA lists workers’ compensation and other public disability benefits as the payments that may reduce SSDI. Ask your lawyer to review how any settlement is paid.
Will a settlement end my SSI?
It can if the money is counted. Under SSA rules, what remains after excluded amounts becomes a resource the month after you receive it, and the SSI resource limit is $2,000 for one person. An ABLE account or a special needs trust may help, depending on your situation.
Can I get California SDI while my injury case is pending?
If you meet EDD’s rules, yes. SDI covers injuries that are not work-related and pays for up to 52 weeks.
When does Medicare start if I get SSDI?
SSA says you get Medicare coverage automatically after you have received disability benefits for two years. Until then, other coverage or the injury claim may have to fill the gap. Beverly Law offers a free case review in English or Spanish at (310) 552-6959. You owe no fees or costs unless we win.
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Related pages
Sources
- SSA, Disability Evaluation Under Social Security, 11.00 Neurological – Adult (listing 11.18) (ssa.gov)
- SSA, Disability Benefits (publication EN-05-10029) (ssa.gov)
- SSA, Supplemental Security Income (publication EN-05-11000) (ssa.gov)
- SSA blog, Understanding Social Security Disability Benefits (Aug. 12, 2021) (ssa.gov)
- SSA, How Workers' Compensation and Other Disability Payments May Affect Your Benefits (EN-05-10018) (ssa.gov)
- SSA POMS SI 00830.515, Awards and Settlements (secure.ssa.gov)
- SSA, Spotlight on ABLE Accounts (ssa.gov)
- SSA, Spotlight on Trusts (2026 edition) (ssa.gov)
- California EDD, About Disability Insurance (edd.ca.gov)
- Washington Paid Family and Medical Leave, Find out how paid leave works (paidleave.wa.gov)
- Helfend v. Southern Cal. Rapid Transit Dist. (1970) 2 Cal.3d 1 (scocal.stanford.edu)
- Haygood v. De Escabedo (Tex. 2011), No. 09-0377 (law.justia.com)
- Ciminski v. SCI Corp. (1978) 90 Wn.2d 802 (law.justia.com)
Important: This page is general information, not legal or medical advice, and reading it does not create an attorney-client relationship. Every case is different; talk to a lawyer about yours. Texas cases are handled by the firm’s Texas-licensed attorneys, Joyce Ondich and John Efstathiou. Last reviewed: November 7, 2026.
