Miss the filing deadline and the strength of your case stops mattering. A court can dismiss a thoroughly documented malpractice claim on nothing more than a calendar. Missouri gives most medical malpractice claims two years from the date of the negligent act, not two years from the day you discovered the harm. That single distinction ends cases before the facts are ever heard. It is why a patient who spends a year chasing answers can find the courthouse door closed the moment those answers arrive. A Southern Missouri medical malpractice attorney can measure your deadline against the medical record and tell you how much time is actually left.
What the Two-Year Clock Runs From
Missouri measures the malpractice deadline from the event, not when you understand it. The statute reaches:
- Physicians
- Hospitals
- Dentists
- Registered or licensed practical nurses
- Optometrists
- Podiatrists
- Pharmacists
- Chiropractors
- Professional physical therapists
- Mental health professionals licensed under chapter 337
- Any other entity providing health care services
The deadline also reaches their employees acting in the course and scope of employment. Every malpractice claim against them must be brought within two years of the date of occurrence of the act complained of.
The word “occurrence” does the work. If a surgeon injured a bile duct on March 3, the clock started on March 3, even though the leak was not diagnosed until the following winter. Missouri does not apply a broad discovery rule to malpractice, and plenty of articles online suggest otherwise. The statute names its exceptions, and a general rule that waits for the patient to find out is not among them.
The Three Exceptions the Statute Actually Names
The medical malpractice limitations statute names three exceptions, and only three. Each one is written into the text itself:
Foreign Objects
Leaving a foreign object inside a patient is so shocking it is included as a “never event.” When the negligence claimed is introducing and negligently permitting a foreign object to remain inside a living patient, the claim must be brought within two years of the date the negligence was discovered, or the date the patient in the exercise of ordinary care should have discovered it, whichever comes first.
Undisclosed Test Result
When the negligence is a failure to inform a patient of medical test results, the two years run from discovery, or from the date ordinary care should have revealed the failure, whichever comes first. This exception does not cover being told the results of a negligently performed test, and it does not cover being handed erroneous results.
Injured Minors
When the person bringing the action is a minor under 18, that minor has until his or her 20th birthday to file. Even with that longer window, records go missing, and memories fade, so there is nothing to gain by waiting to have a child’s care reviewed.
Anything outside those three categories runs from the date of the act. It is also worth knowing that Missouri’s general tolling statute, the one that gives extra time to people under 21 and to people who are mentally incapacitated, opens with an express carve-out for the medical malpractice section. A late malpractice claim cannot borrow time from it.
The 10-Year Outer Limit
The legislature also drew an outer boundary, but it does not fall in the same place for every claimant. No action for damages for malpractice, error, or mistake may be commenced after 10 years from the date of the act of neglect, or after two years from a minor’s 18th birthday, whichever is later. The statute opens that sentence with the words “in no event.”
Read the “whichever is later” clause carefully. It caps the foreign object and test result exceptions at 10 years, but it does not cut a child off at year 10. A patient injured in infancy still has until the 20th birthday, which lands well past the decade mark.
For an adult patient, this kind of cutoff is a hard bar measured from the conduct rather than from the injury. It can expire before a patient has any reason to suspect a problem, which is why waiting to see how an injury develops is such a costly strategy in Missouri.
Wrongful Death Claims Follow a Different Deadline
When malpractice ends in death, the family does not simply inherit the patient’s two-year clock. The claim becomes a wrongful death action, and the wrongful death limitations statute requires every such action to be commenced within three years after the cause of action accrues. The two statutes overlap on their face, because the malpractice section is written to reach all actions related to health care. Which deadline governs a particular death caused by negligent care is a question to put to a lawyer immediately, not late.
The wrongful death statute also decides who may sue, and the order matters. A spouse, the children, the surviving lineal descendants of deceased children, and the parents come first. Brothers and sisters or their descendants may sue only if no one in the first group can, and only if they can establish a right to the damages the statute provides. If neither group exists, a court may appoint a plaintiff ad litem on the application of someone entitled to share in the proceeds.
Only one action may be brought against any one defendant for the death of any one person, so families considering a claim for a death caused by negligent care should settle the accrual date and the proper plaintiff early.
Two More Deadlines That Start After You File
Filing on time is not the end of the calendar. Two later requirements end Missouri malpractice cases that were filed on time:
- Service within 180 days. If a plaintiff serves a defendant after the limitations period has already expired, service must be made within 180 days of filing the petition. If it is not, the court dismisses the action against that defendant. The dismissal is without prejudice unless the plaintiff has previously taken or suffered a nonsuit, in which case it is with prejudice.
- An affidavit within 90 days. The plaintiff or the attorney must file an affidavit stating that a legally qualified health care provider has given a written opinion that the care fell below what a reasonably prudent and careful provider would have given under similar circumstances, and that the failure directly caused or directly contributed to cause the damages claimed in the petition. A separate affidavit is required for each defendant, and it is due no later than 90 days after the petition is filed. A court may extend that period for good cause by up to another 90 days. If no affidavit is filed, the court must, on the motion of any party, dismiss the action against that moving party without prejudice.
Both requirements assume you gathered records and lined up a qualified reviewer long before you file the petition. That is the practical reason to call a lawyer at month three rather than month 23.
Talk With Our Family of Lawyers Before the Clock Runs Out
For nearly 40 years, our law firm has served Southern Missouri families. If you believe a doctor, hospital, or nurse harmed you or someone you love, let us look at the dates before the dates decide the case. Contact Privette Law Office to schedule a free consultation.