Written by John Kluksdal. Read more about the author.
Most people who come through my door after a traumatic brain injury are focused on getting well. That’s exactly where their attention should be. But the legal clock starts running the day the injury happens, not the day the doctor clears you or the day you decide you’re ready to deal with it. Missing that deadline ends your case — permanently, with rare exceptions. I’ve seen good claims die for no reason other than timing, and it’s one of the worst outcomes I encounter in this work.
If you or someone in your family suffered a TBI in Boise or anywhere in Idaho, understanding the deadlines is the first practical step you need to take.
How Long Do I Have to File a Traumatic Brain Injury Claim in Idaho in Boise?
Under Idaho Code § 5-219, the standard statute of limitations for a personal injury claim — including traumatic brain injury — is two years from the date of the injury. That applies to most TBI cases in Boise: car accidents, slip and falls, workplace injuries where a third party is at fault, and similar situations.
Two years sounds like a long time. It isn’t. Medical treatment, rehabilitation, imaging studies, specialist consultations, and gathering evidence all take time. By the time a family feels ready to engage a lawyer, several months may already be gone.
There are specific situations where the two-year window shrinks dramatically or changes shape entirely:
Claims against a government entity. If your TBI happened because of a defective road, negligent government employee, or unsafe condition on public property in Boise, Idaho’s Tort Claims Act kicks in. Under Idaho Code § 6-906, you have only 180 days from the date of injury to file a notice of tort claim with the appropriate government body. Miss that window, and you cannot sue the government at all, regardless of how strong your case is. I have seen clients come in on day 185. There is nothing I can do for them at that point. If a government entity may be involved, call a Boise government tort claim attorney immediately.
Claims involving minors. When the injured person is a child, Idaho law generally tolls — meaning pauses — the statute of limitations until the child turns 18. At that point, the two-year clock begins. But there are nuances depending on the type of claim, so don’t assume the deadline is automatically extended without confirming it with an attorney.
The discovery rule. In some TBI cases, the injury isn’t immediately obvious. Mild or moderate brain injuries sometimes don’t present clearly right away. Idaho courts have recognized a discovery rule, which can start the clock from when the injured person knew or reasonably should have known about the injury. That said, this is not a reliable safety net — courts scrutinize it closely, and defendants argue aggressively against it. According to the CDC, TBI symptoms can be subtle in the early stages, which is precisely why early medical documentation matters so much for both your health and your legal claim.
The only safe approach is to assume the two-year deadline applies and act before it expires.
Why the Deadline Matters More in TBI Cases Than Most Others?
TBI cases are medically complex. The Mayo Clinic describes traumatic brain injury as affecting brain function through physical damage to brain tissue, and the long-term effects — cognitive impairment, personality changes, chronic headaches, seizure disorders — often don’t fully manifest for months or years. Getting the full picture of damages takes time, and building a case that accurately reflects your lifetime losses requires expert medical testimony, neuropsychological evaluations, and often vocational experts.
Starting that process early gives your attorney time to preserve evidence, obtain surveillance footage before it’s overwritten, secure witness statements while memories are fresh, and retain the right specialists. Evidence in TBI cases degrades fast. Waiting 18 months to call a lawyer puts you at a real disadvantage, even if you’re technically still within the two-year window.
In my experience, the clients who get the strongest outcomes are the ones who called within a few weeks of the accident — not because they were in a hurry to litigate, but because we had time to build their case properly while they focused on recovery.
Common Mistakes That Cost TBI Victims Their Claims
The first mistake I see is assuming that ongoing settlement negotiations with an insurance company extend the legal deadline. They don’t. Insurers know this, and some will string out discussions until the statute runs. Under FindLaw’s overview of personal injury statutes, the filing deadline is set by law, not by what an insurance company says or does.
The second mistake is waiting to see “how bad” the injury turns out to be before contacting an attorney. That instinct is understandable, but it costs people their cases. See a lawyer early. You’re not committing to a lawsuit — you’re protecting your options.
The third mistake is not knowing whether a government entity is involved. A car accident involving a city vehicle, a fall on a public sidewalk, or an injury at a government facility all trigger that 180-day notice requirement. Most people don’t realize this until it’s too late.
What Happens If You Miss the Deadline?
The defendant’s attorney files a motion to dismiss on statute of limitations grounds. The court grants it. Your case is over, regardless of how severe your injury is or how clear the other party’s fault might be. Cornell Law School’s Legal Information Institute explains that once the deadline passes, courts lack the discretion to hear the claim in most circumstances. There is no exception for “I didn’t know” or “I was too injured to act.”
This is why I tell every family that contacts me: protect your right to sue first, then figure out whether you want to use it.
Getting Help From a Boise TBI Attorney in 2026
Kluksdal Law | Boise Personal Injury Attorney handles traumatic brain injury cases throughout Idaho, including car accident TBIs, motorcycle accident injuries, truck accident cases, and slip and fall injuries. We also handle cases where a TBI results in wrongful death — you can learn more about those claims through our Boise wrongful death attorney page.
If you want to see how we’ve handled past cases, take a look at our case results before you call. I also have video resources that walk through common questions clients have about the process.
The American Bar Association recommends consulting a licensed attorney as early as possible after a serious injury — not because you’re required to, but because early legal guidance consistently produces better outcomes. The NIH also documents that TBI is among the most complex injury types to assess for long-term prognosis, which makes accurate early documentation especially critical.
Don’t wait to find out whether your deadline has passed. Call our Boise office directly at (208) 996-8180 or schedule a consultation online. You can also visit us in person at 350 N 9th St Ste 500, Boise, ID 83702. The consultation is free, there’s no obligation, and knowing where you stand costs you nothing.
