New York State Law
How the Serious Injury Threshold Works and Why This Rule Can Be One of the Hardest Ways to Recover Compensation
Most people assume that if someone else caused a crash, the right to sue follows automatically. In New York, that’s not how it works.
Before any car accident case can move forward, the injured person must clear a legal hurdle called the serious injury threshold. Until you satisfy that requirement, it doesn’t matter how clearly the other driver was at fault. A lawsuit for pain and suffering simply cannot proceed.
That framework exists because of New York’s No-Fault Insurance Law. When you’re injured in a motor vehicle accident, your own insurance company pays your medical bills and a portion of lost wages regardless of who caused the crash. That system moves money quickly, which is the point. But it was also designed to keep minor injury cases out of the courts.
In previous articles, I’ve discussed several of the threshold categories individually, including fractures, significant limitation of use, permanent consequential limitation, permanent loss of use, and significant disfigurement. This article focuses on another category that is frequently misunderstood—the 90/180-Day Rule.
Although this provision sounds straightforward, it is often one of the most difficult ways to satisfy the serious injury threshold. I’ve seen many people assume they qualify simply because they were injured for several months after an accident. Unfortunately, the law requires much more than that.
Let’s take a closer look at how it works.
When New York designed its No-Fault system, the tradeoff was straightforward: minor injury cases stay out of court, handled by insurance. Serious injury cases get back into court, where full compensation including pain and suffering is available. The threshold is that dividing line. Every injured person bringing a motor vehicle lawsuit must cross it before a jury ever hears the case.
Every car accident lawsuit in New York must satisfy at least one of these categories before a jury can hear the case. New York’s No-Fault system limits lawsuits to cases involving a “serious injury” as defined by statute. There are nine qualifying categories — satisfying any one of them allows you to pursue compensation for pain and suffering beyond what No-Fault covers.
They include:
This article
|
01
Death Wrongful death resulting from injuries sustained in a motor vehicle accident.
|
02
Dismemberment Loss of a limb or body part as a result of the accident.
|
03
Significant disfigurement A scar or permanent alteration to appearance that a reasonable person would regard as significant.
|
|
04
Fracture Any bone fracture — including hairline fractures — causally related to the accident.
|
05
Loss of a fetus Miscarriage or fetal death caused by injuries sustained in the accident.
|
06
Permanent loss of use Total permanent loss of use of a body organ, member, function, or system.
|
|
07
Permanent consequential limitation A significant limitation of a body organ or member that is permanent in nature.
|
08
Significant limitation of use A significant limitation of a body function or system, even if not permanent.
|
09
90/180-Day Rule Injuries preventing substantially all normal daily activities for 90 of the first 180 days.
|
In Focus
Unlike the other eight categories, the 90/180-Day Rule does not require permanent injury, a fracture, or visible trauma. It asks one question: did your injuries prevent you from performing substantially all of your normal daily activities for at least 90 of the first 180 days after the accident? That standard is deceptively difficult to meet — and even harder to prove without consistent medical documentation from the outset.
That final category is what lawyers simply call the 90/180-Day Rule.
At first glance, it sounds relatively easy.
If you’re hurt for three months, shouldn’t that be enough?
Not necessarily.
In reality, this provision has generated decades of litigation because courts have repeatedly been asked to define what phrases like “substantially all” and “usual and customary daily activities” actually mean. As a result, simply showing that you were injured for ninety days is not enough. The evidence must establish that the accident prevented you from carrying out the important activities that made up your normal life during that period. Those legal standards have been developed through years of court decisions interpreting Insurance Law § 5102(d).
You only need to satisfy one category. Many cases qualify under multiple categories simultaneously — for example, a fracture (category 4) and significant limitation of use (category 8). An experienced attorney will evaluate all nine against your specific injuries and medical record.
Despite the name, the rule doesn’t require you to stay in bed for ninety consecutive days.
Nor does it require a permanent injury.
Instead, this category recognizes something that most people instinctively understand.
Some injuries are devastating for several months but eventually improve.
A person may suffer multiple injuries, undergo surgery for lacerations or fractures, spend months recovering, and eventually make an excellent recovery. Even if they are left with little or no permanent impairment, there is no question that those first several months dramatically affected every aspect of their life.
The 90/180-Day Rule was created to address situations like that.
The law asks one central question:
During the first 180 days after the accident, did your injuries prevent you from performing substantially all of the important activities that made up your normal daily life for at least ninety days?
Notice what the statute does not ask.
Instead, it asks whether your injuries actually prevented you from performing substantially all of your normal activities.
That is a much higher standard than many people realize.
And that is exactly why these cases are so heavily litigated.
The phrase that causes the most confusion in these cases is probably just two words:
“Substantially all.”
The law doesn’t require that you be completely disabled after an accident. You don’t have to be bedridden or physically incapable of doing anything.
But the law also doesn’t recognize every limitation as a serious injury.
Instead, the court looks at the overall picture.
Did your injuries prevent you from performing most of the important activities that made up your normal life?
Notice the emphasis on the word most.
That’s what makes these cases difficult.
Suppose someone tells me they couldn’t play golf for four months after a collision.
That may have been disappointing, but by itself it probably isn’t enough.
What if they couldn’t go to the gym?
Again, standing alone, probably not.
But now change the facts.
Imagine they couldn’t return to work, couldn’t drive, couldn’t care for their children without assistance, couldn’t grocery shop, couldn’t perform household chores, needed help getting dressed, and spent months attending physical therapy several times a week.
Now we’re looking at something entirely different.
The law isn’t focused on one activity.
It’s focused on whether the accident disrupted your everyday life to such an extent that you were unable to perform substantially all of the things that normally made up your daily routine.
That’s a much higher standard than many people expect.
This is where many cases are won or lost.
People often believe that because they experienced significant pain after an accident, they automatically satisfy this category.
Unfortunately, pain alone isn’t enough.
Neither is telling a jury how difficult life became.
The courts are looking for objective proof.
In other words, they want evidence they can actually measure and verify.
| Medical Documentation | Employment & Daily Life |
|---|---|
| Treating physician notes
Documenting restrictions and limitations at each visit throughout the 180-day window |
Employer disability paperwork
Leave of absence records, light duty assignments, accommodation requests |
| Diagnostic imaging
MRI findings, X-rays, CT scans that objectively explain reported symptoms |
Work absence records
Pay stubs, time sheets, and supervisor letters confirming missed days |
| Physical therapy records
Frequency, objective findings, and progress notes showing consistent care |
School attendance records
Missed classes, home instruction orders, academic accommodation letters |
| Prescribed restrictions
Written orders limiting activity, lifting, driving, or return to work |
Home aide records
For retirees and stay-at-home parents — documentation of outside assistance required |
| Witness accounts
Family members or aides documenting daily limitations they observed |
No unexplained gaps in treatment
Continuous, consistent care throughout the window — gaps become the defense’s strongest argument |
These documents help paint a picture of what your life actually looked like during those first six months after the accident.
The stronger and more consistent the documentation, the stronger the case.
The opposite is also true.
If someone claims they were unable to function for three months but only saw a doctor once or twice, skipped physical therapy, returned to normal activities shortly after the accident, or has large gaps in treatment, those facts will almost certainly be highlighted by the defense.
Judges expect the medical evidence to match the level of disability being claimed. Contemporaneous treatment records, objective findings, and consistent medical care generally carry much greater weight than opinions first expressed years later after litigation has begun.
Courts almost always want something concrete. Something measurable. The first thing most judges look at is employment: did you go back to work, when, and under what restrictions? If a doctor kept you out of work for ninety days or more, that’s strong evidence. If you returned after two weeks or even 89 days without restrictions, this category becomes much harder to prove. The same logic applies to students. Missed semesters and documented home instruction carry real weight because they give the court objective markers of disruption.
Cases involving retirees, stay-at-home parents, or people between jobs are more difficult not because they can’t qualify, but because the evidence has to work harder. If you’re not employed, the court looks elsewhere: could you drive, cook, clean, care for children, shop for groceries? Did family members take over those responsibilities? Was outside help required? The less obvious your daily routine, the more critical it becomes to have those limitations documented in your medical records at the time they were happening.
Don’t assume the judge understands what your life looked like before the accident. You have to prove it, and the best proof comes from consistent treatment, well-documented restrictions, and contemporaneous records that show, in concrete terms, what you could no longer do.
One of the biggest surprises for many clients is learning that a jury may never decide whether they suffered a serious injury.
Most people assume that once a lawsuit is filed, they’ll eventually tell their story in court and let a jury decide what happened.
In reality, that’s often not how it works.
In many New York car accident cases, the defense will ask the judge to dismiss the case long before trial. This is done through what lawyers call a motion for summary judgment.
“Even if everything the plaintiff says is true, the evidence still isn’t enough to satisfy New York’s serious injury threshold. Because of that, there is nothing for a jury to decide.”
If the judge agrees, the case is dismissed.
It never reaches a jury.
That is why documenting your injuries from the very beginning is so important.
Every case is different, but the process generally follows the same pattern.
At that point, the burden shifts to the plaintiff.
Now it’s our job to demonstrate that there is enough objective evidence for a jury to reasonably conclude that you suffered a serious injury.
That doesn’t mean we have to prove the entire case at that stage.
It simply means we have to show there is a genuine factual dispute that deserves to be decided by a jury rather than dismissed by the court. Courts routinely require objective medical proof, not simply complaints of pain, to raise that factual issue.
I’ve said it throughout this article, but it’s worth repeating because it is that important.
Documentation wins these cases.
When I review a potential 90/180 claim, I’m constantly asking myself one question:
If a judge reads this file six months or a year from now, what objective evidence will they have to rely on?
Those are two very different cases.
Judges don’t know you personally.
They weren’t at the accident scene.
They don’t know what your life looked like beforehand.
They only know what the evidence shows.
That’s why medical records are often some of the most persuasive evidence in the case. Medical records created while you’re actually treating for your injuries generally carry more weight than opinions prepared years later after litigation has begun.
Over the years, I’ve seen certain issues come up again and again.
Sometimes they can’t be avoided.
Other times, they unfortunately make an otherwise good case much more difficult.
One of the biggest problems is gaps in treatment.
If someone claims they couldn’t perform substantially all of their daily activities for three months but stopped treating after only a few weeks, the defense is going to point that out.
That doesn’t automatically mean the case is lost. There are legitimate reasons people stop treatment, including insurance issues, financial concerns, or reaching maximum medical improvement.
But unexplained gaps almost always become part of the defense’s argument.
Another issue is returning to work too soon.
Everyone’s financial situation is different.
Many people simply cannot afford to stay home.
I understand that.
Judges understand that.
But if you return to your normal job without restrictions shortly after the accident, the defense will almost certainly argue that your injuries could not have prevented you from performing substantially all of your daily activities.
The same is true if your activities don’t match your claims.
If medical records state you are completely disabled but photographs, videos, or social media posts show you engaging in physical activities during that same period, those inconsistencies can seriously damage your credibility.
Credibility matters.
The strongest cases are the ones where everything lines up.
The medical records.
The testimony.
The work records.
The treatment history.
The opinions of the treating physicians.
When all of those pieces tell the same story, it becomes much easier to convince a judge that the case deserves to proceed.
If the judge determines there is enough evidence to create a legitimate factual dispute, your case continues.
That doesn’t mean you’ve won.
It simply means you’ve cleared one of the biggest legal hurdles.
From there, the parties continue preparing for trial or settlement.
If the case ultimately goes before a jury, the jury will hear testimony from the injured person, treating physicians, medical experts, and often defense doctors as well.
Medical records, diagnostic studies, employment records, photographs, and other evidence may all be introduced.
The jury’s job is no longer simply deciding whether an accident happened.
Instead, they must determine the nature and extent of the injuries, whether those injuries satisfy New York law, and what amount of compensation, if any, fairly compensates the injured person.
Every case is unique.
Some settle before trial.
Others require a jury to decide.
But surviving summary judgment means you have presented enough evidence for your day in court.
The 90/180-Day Rule is one of the more challenging categories under New York’s serious injury threshold because it isn’t based solely on an MRI, an X-ray, or a surgical procedure.
It’s based on how an injury affected your life during those critical first six months after the accident.
That’s an incredibly fact-specific inquiry.
I’ve represented people who were convinced they qualified because they lived with pain for months after an accident.
Unfortunately, pain alone wasn’t enough.
I’ve also represented people who underestimated their own case because they focused on the fact that they eventually recovered. What they didn’t appreciate was how dramatically those first several months had changed every aspect of their daily lives.
The lesson is simple.
Don’t guess whether you satisfy the threshold.
Have an experienced attorney evaluate the evidence.
The details matter.
Sometimes one doctor’s note, one employment record, or one well-documented restriction can make the difference between a case that gets dismissed and one that reaches a jury.
That’s why every decision you make during those first months after an accident matters.
Those things don’t just help your recovery. They help tell the story of what the accident actually took away from you.
And in a 90/180-Day Rule case, that’s exactly the story the court is trying to understand.
No. The law does not require total disability or bed rest. It requires that your injuries prevented you from performing substantially all of your usual daily activities for at least 90 of the first 180 days after the accident. Courts focus on the overall picture of your life during that period, not whether you were completely incapacitated.
"Substantially all" means most of the important activities that made up your normal daily routine before the accident. Courts do not require you to have been unable to do everything. They look at whether your injuries disrupted the core activities of your life, including work, childcare, household responsibilities, and daily self-care, for the required period.
Yes. Unlike other serious injury categories, the 90/180-Day Rule does not require permanent injury. Someone who underwent surgery, spent months in recovery, and eventually healed completely may still qualify if their injuries prevented them from performing substantially all of their normal activities during those critical first six months after the accident.
Courts require objective medical proof, not just your account of pain. Strong cases include consistent treatment records, physician notes removing you from work, diagnostic imaging, physical therapy records, and employer disability paperwork. The evidence must show measurable limitations, not simply that you were uncomfortable or that daily activities became more difficult than before.
It can make this category significantly harder to prove. If you returned to full duty within a few weeks, the defense will argue your injuries did not prevent substantially all of your normal activities. That said, returning under restrictions or light duty is different from unrestricted work, and each situation requires careful evaluation of the complete medical record.
Yes, but these cases require more detailed documentation. Since there are no employment records to demonstrate disruption, medical records must show that the injuries prevented the person from performing household responsibilities, caregiving, driving, cooking, or other activities that defined their normal daily routine before the accident. The evidence has to work harder to fill that gap.
Gaps in treatment are one of the most common problems in 90/180-Day Rule cases. If you claim disability for three months but stopped treating after a few weeks, the defense will highlight that inconsistency. Gaps can sometimes be explained by insurance issues or financial hardship, but unexplained interruptions in care routinely become a significant part of the defense's argument.
The defense typically hires doctors to conduct an Independent Medical Examination and then argues those findings, combined with gaps in treatment or an early return to work, show the injuries were not serious enough. They often file a motion for summary judgment asking the court to dismiss the case before it ever reaches a jury, making early documentation critical to survival.
No. The statute requires that you were prevented from performing substantially all of your normal activities for at least 90 of the first 180 days following the accident. Those days do not need to run consecutively. However, the limitations must be documented throughout that period, and extended breaks in treatment can undermine the overall picture the evidence is trying to establish.
There is no formula that produces a clear answer without reviewing the full medical record, employment history, and treatment timeline. What matters is the totality of the evidence. An experienced Long Island car accident attorney can evaluate whether your documentation is strong enough to survive a summary judgment motion and advise you on the realistic strength of your claim.
The information provided in this blog is for general informational purposes only and reflects the opinions of the author. It is not legal advice and does not create an attorney-client relationship. Every case is different, and results depend on the specific facts and applicable law. You should not act or rely on any information in this blog without first seeking advice from a qualified attorney regarding your individual situation.
