Traumatic brain injuries are among the most complex and high-stakes injuries that can result from a motor vehicle accident. When someone suffers a TBI in a crash, the legal and insurance process that follows looks meaningfully different from a standard soft-tissue injury claim — and the involvement of an attorney is far more common. Here's how that process generally works.
A traumatic brain injury occurs when a sudden blow, jolt, or penetrating impact disrupts normal brain function. In car accidents, TBIs can range from mild concussions to severe injuries involving long-term cognitive impairment, memory loss, personality changes, or permanent disability.
What sets TBI claims apart:
Personal injury attorneys get involved in TBI cases more often than in minor injury claims for straightforward reasons: the stakes are higher, the evidence is more complex, and insurance companies are more likely to contest both liability and damages.
Most personal injury attorneys handle TBI cases on a contingency fee basis — meaning the attorney receives a percentage of any recovery, typically ranging from 25% to 40%, and collects nothing if the case doesn't result in a settlement or judgment. The exact structure and percentage vary by state, attorney, and case complexity.
What an attorney handling a TBI case generally does:
Damages in TBI cases generally fall into two categories:
| Damage Type | Examples |
|---|---|
| Economic damages | Medical bills (past and future), rehabilitation, lost wages, lost earning capacity, home care costs |
| Non-economic damages | Pain and suffering, emotional distress, loss of enjoyment of life, cognitive and personality changes |
| Punitive damages | Rarely awarded; typically only when conduct was grossly reckless or intentional |
The availability and limits on non-economic damages vary significantly by state. Some states cap pain and suffering awards in personal injury cases; others do not. A few states still follow contributory negligence rules, which can bar recovery entirely if the injured person was even partially at fault. Most states use some form of comparative fault, which reduces a victim's recovery proportionally to their share of fault.
No-fault states require injured drivers to first seek compensation through their own Personal Injury Protection (PIP) coverage, regardless of who caused the crash. To step outside the no-fault system and pursue the at-fault driver — which is almost always necessary in a serious TBI case — the injury must typically meet a tort threshold defined by state law (serious injury, permanent impairment, or a dollar amount of medical expenses).
At-fault states allow TBI victims to pursue the at-fault driver's liability insurance directly. But coverage limits matter enormously. If the at-fault driver carries only a state minimum policy, and the TBI produces hundreds of thousands of dollars in medical costs, the injured person's own underinsured motorist (UIM) coverage becomes a critical safety net.
Common coverage sources in TBI cases:
Every state sets a statute of limitations — a deadline by which a lawsuit must be filed after an injury. For personal injury claims, these windows commonly range from one to three years, though some states differ. TBI cases add complexity: symptoms may not fully manifest for weeks or months, and a victim may be cognitively impaired immediately after the injury, which can affect legal capacity.
Missing the filing deadline in a given state generally means losing the right to sue, regardless of how serious the injury. Deadlines vary by state and by the type of defendant involved (for example, claims against government entities often carry much shorter notice requirements).
TBI claims involve overlapping layers of state law, insurance coverage, medical documentation, and disputed causation. Whether a TBI claim succeeds — and what it ultimately resolves for — depends on the specific facts: the state where the crash occurred, the fault rules that apply, the insurance policies in play, the medical evidence available, and the long-term prognosis.
How those pieces fit together in any individual case isn't something general information can answer.
