Ohio medical malpractice law
In Ohio, you generally have 1 year to file a medical malpractice claim from the day the injury was discovered. Caps and rules for 2026.
Sources checked

Malpractice lawyers in Ohio
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3.Free case review
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6.Settlement or trial
Many claims settle. Some go to a judge or jury.
Your deadline: 1 year from when you found out
Ohio rules at a glance
Work out your deadline- Filing deadline
- 1 year from when the injury was discovered
- Damage caps
- The greater of $250,000 or 3 times economic…
- Before you file
- An expert's sign-off on the claim
- Shared fault
- Modified comparative (51% bar)
Full Ohio law guidedeadlines, caps, children, experts and sources
Example: treatment and discovery six months ago
- TreatmentMay 7, 2026
- Likely deadlineMay 7, 2027
- Outer limitMay 7, 2030
- The clock startsWhen you found out, or should have
- Time to start a claim1 yearMiss it and the claim is usually lost.
- At the very most4 yearsafter the treatment, with a few exceptions
- Pain and sufferingCapped at $250,000
- All damages togetherNo overall cap
The rules in Ohio
Filing deadline
1 year
Counted from when the injury was discovered. File within 1 year after the claim accrues: when the patient discovers or reasonably should discover the injury, or when the provider relationship ends, whichever is later. A written 180-day notice letter sent before the year ends extends the time to file.
Discovery rule
Applies
Yes, inside the 4-year outer limit. An injury discovered in the fourth year allows 1 year from discovery.
Outer limit
4 years
4 years from the act or omission, with exceptions for foreign objects and late discovery; the Ohio Supreme Court upheld it (Ruther v. Kaiser, 2012).
Ohio Rev. Code § 2305.113(C), (D)
Damage caps
The greater of $250,000 or 3 times economic damages, up to $350,000 per plaintiff and $500,000 per occurrence. For catastrophic injury (permanent loss of a limb or bodily organ system, permanent and substantial deformity, or inability to care for oneself), $500,000 per plaintiff and $1,000,000 per occurrence.
Ohio caps non-economic damages in medical claims, with higher limits for catastrophic injuries.
Children
Different clock
The 1-year period is paused while the patient is a minor. A lawyer should confirm how the 4-year outer limit applies to a child's claim.
Affidavit of merit
Required
The complaint must include an affidavit of merit from a qualified expert for each defendant; the court may allow up to 90 more days for good cause.
Ohio Civ. R. 10(D)(2)
Notice before suing
Not required
Not required, but the optional 180-day letter extends the deadline.
Ohio Rev. Code § 2305.113(B)
Shared fault
Modified comparative (51% bar)
Modified comparative fault: barred above 50% of the fault
Experts
Expert evidence
The expert must be licensed and devote at least half of their professional time to active clinical practice or teaching in the defendant's field (Ohio Evid. R. 601).
The Ohio Revised Code site could not be reached during research, so the text was checked against secondary summaries and the MPL Association compendium.
Sources
- Ohio Medical Malpractice Laws and Statutory Rules, AllLaw (Nolo)
- Ohio Revised Code § 2305.113, Ohio Legislative Service Commission
- State Enactments of Selected Medical Liability Reforms (as of 8/27/2026), Medical Professional Liability Association
- Contributory Negligence/Comparative Fault Laws in All 50 States (updated 6/10/2026), Matthiesen, Wickert & Lehrer, S.C.
Other states
- Best Medical Malpractice Lawyers in Alabama (2026)
- Best Medical Malpractice Lawyers in Alaska (2026)
- Best Medical Malpractice Lawyers in Arizona (2026)
- Best Medical Malpractice Lawyers in Arkansas (2026)
- Best Medical Malpractice Lawyers in California (2026)
- Best Medical Malpractice Lawyers in Colorado (2026)
- Best Medical Malpractice Lawyers in Connecticut (2026)
- Best Medical Malpractice Lawyers in Delaware (2026)
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