Medical Malpractice Laws in Ohio (2026): Deadlines & Caps

Ohio combines a short filing deadline with a structured cap on noneconomic damages and a required affidavit of merit. A patient generally has one year to sue under ORC 2305.113, faces a four-year statute of repose, and must attach an affidavit of merit to the complaint under Civ.R. 10(D)(2). Ohio also caps noneconomic (pain and suffering) damages under ORC 2323.43, a cap the Ohio Supreme Court upheld on its face in 2007. This page explains those rules along with comparative fault and the wrongful-death framework.

This is general legal information, not legal advice, and it is part of our Medical Malpractice Laws by State series. The deadlines and exceptions depend on the facts, so confirm your situation with a licensed Ohio attorney.

What counts as medical malpractice in Ohio

A medical claim in Ohio is a claim that arises out of the medical diagnosis, care, or treatment of a patient by a physician, hospital, or other health care provider. The claim requires proof that the provider breached the accepted standard of care and that the breach caused the injury. Physicians, dentists, optometrists, chiropractors, nurses, and hospitals can be liable. A poor outcome alone is not malpractice; the patient must show care that fell below what a reasonably careful provider would have rendered.

The statute of limitations to sue in Ohio

Under ORC 2305.113, a medical claim must generally be commenced within one year after the cause of action accrued. Ohio's one-year period is among the shortest in the nation, which makes acting quickly important. The accrual point can turn on when the patient discovered or should have discovered the injury and its connection to the care, or on when the physician-patient relationship for that condition ended, depending on the facts.

Ohio provides a built-in extension. If the claimant gives the defendant written notice that the claimant is considering bringing an action, and serves that notice before the one-year period expires, the claimant then has 180 days from the date of the notice to file. This is commonly called the 180-day letter, and it is a frequent way to preserve a claim while investigation continues.

Ohio's statute of repose

In addition to the one-year limitation, Ohio sets an absolute outer deadline. Under ORC 2305.113, no medical, dental, optometric, or chiropractic claim may be commenced more than four years after the act or omission that is the alleged basis of the claim, and a claim not commenced within that period is barred. Limited exceptions exist, including for certain claims that could not reasonably have been discovered within the four years and for a foreign object left in the body. A repose period is a hard cutoff that can expire before a patient even discovers the injury, so the four-year limit matters as much as the one-year clock.

Damage caps in Ohio under ORC 2323.43

Ohio caps noneconomic (pain and suffering) damages in medical claims, and the cap is still law. Under ORC 2323.43, the standard limit on noneconomic damages is the greater of $250,000 or three times the plaintiff's economic damages, subject to a maximum of $350,000 per plaintiff and $500,000 per occurrence. Economic damages such as medical bills and lost earnings are not capped.

For catastrophic injuries, the cap is higher. When the injury involves a permanent and substantial physical deformity, loss of use of a limb, loss of a bodily organ system, or a permanent physical functional injury that permanently prevents the person from independently caring for themselves and performing life-sustaining activities, the limit rises to $500,000 per plaintiff and $1,000,000 per occurrence.

The Ohio Supreme Court upheld the noneconomic cap against a facial constitutional challenge in Arbino v. Johnson & Johnson, 116 Ohio St.3d 468, 2007-Ohio-6948, finding it did not violate the rights to a jury trial, due process, a remedy, open courts, or equal protection. More recently, some Ohio appellate courts have held the catastrophic cap unconstitutional as applied to particular plaintiffs with severe injuries. An as-applied ruling addresses the specific case before the court rather than striking the statute for everyone, so the cap remains generally in force in Ohio in 2026 while these challenges continue.

Watch out: Ohio's caps are still law after Arbino (2007), but recent appellate decisions have limited the catastrophic cap as applied to specific severely injured plaintiffs. Whether a cap applies to a particular case is fact-specific, so confirm the current rule with an attorney.

Affidavit of merit and expert requirements

Ohio requires expert support at the outset of a malpractice case. Under Ohio Civil Rule 10(D)(2), a complaint that contains a medical claim must include an affidavit of merit from a qualified expert. The expert must state that they have reviewed the available medical records, that they are familiar with the applicable standard of care, and that, in their opinion, the standard of care was breached and the breach caused injury to the plaintiff.

The rule allows a plaintiff to request additional time to obtain the affidavit, but failing to file a sufficient affidavit can lead to dismissal. Expert testimony is generally required throughout the case to establish the standard of care and how it was breached.

Who can be liable and comparative fault

Ohio malpractice claims can name individual clinicians and the institutions responsible for care. Physicians, nurses, hospitals, and other licensed providers can be liable, and a hospital can be responsible for its own negligence or that of its employees. Ohio follows modified comparative negligence under ORC 2315.33: a plaintiff may recover only if the plaintiff's contributory fault is not greater than the combined fault of the defendants, and the recovery is reduced by the plaintiff's percentage of fault. A plaintiff whose fault is greater than 50 percent recovers nothing.

Wrongful-death medical malpractice in Ohio

When malpractice causes death, the claim proceeds under Ohio's wrongful-death statute, ORC chapter 2125, brought by the personal representative of the estate for the benefit of the surviving spouse, children, and other next of kin. Wrongful-death claims have their own two-year limitation period that differs from the one-year medical claim deadline, so identifying the correct framework and deadline early is important. Because the deadlines and recoverable damages differ, confirm the correct framework with an attorney.

How to evaluate and preserve a possible claim

While every situation is different and this is general information rather than legal advice, people who suspect malpractice in Ohio often act quickly because the one-year deadline under 2305.113 is short, and the 180-day letter can help preserve the claim while records are gathered. Because Civ.R. 10(D)(2) requires an affidavit of merit with the complaint, an attorney typically arranges expert review early. Malpractice cases are commonly handled on a contingency-fee basis, and consulting a licensed Ohio attorney early helps meet the deadlines, though no attorney can promise a particular outcome or dollar amount.