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

Montana medical malpractice claims run on a two-year deadline, must first go through a mandatory state review panel before a lawsuit can be filed, and are subject to a cap on noneconomic damages that the legislature raised in 2025. This page explains the current law for 2026, with each key figure traced to the Montana Code Annotated. It is general legal information, not legal advice.

The Deadline to Sue (Statute of Limitations)

Under Montana Code Annotated section 27-2-205, a medical malpractice action must be commenced within two years after the date of injury, or within two years after the plaintiff discovers or through reasonable diligence should have discovered the injury, whichever occurs last. The discovery rule can delay the start of the clock when an injury is not immediately apparent.

The discovery rule does not extend the deadline indefinitely. The same statute sets an absolute limit so that in no case may an action be commenced more than five years from the date of injury.

Statute of Repose

The five-year limit in section 27-2-205 functions as Montana's statute of repose for medical malpractice. It is an outer deadline that runs regardless of when the injury is discovered, but the statute itself contains tolling provisions that can extend it.

The one most likely to matter is the concealment tolling written into subsection (1). The time limitation is tolled for any period during which there has been a failure to disclose an act, error, or omission on which the action is based and that was known to the defendant, or that the defendant would have known through the use of reasonable diligence. A provider who did not disclose the error can therefore lose the benefit of the running clock for the period of nondisclosure.

Subsection (3) adds a separate discovery-tolling provision for certain injuries cross-referenced in the Code, under which the limitation period is tolled until the plaintiff discovers both the injury and the causal relationship between the medical treatment and the injury. Because these provisions are fact-specific, they should be evaluated by counsel.

Deadlines for Minors

Section 27-2-205 sets a separate rule for young children. For a child who was under the age of four on the date of injury, the limitation period does not begin to run until the minor reaches the eighth birthday or dies, whichever occurs first. Parents and guardians should confirm the specific deadline with counsel, because the tolling applies only to children under four at the time of injury.

Damage Caps and the 2025 Increase

Montana caps noneconomic damages, meaning pain, suffering, emotional distress, and similar nonmonetary losses, under MCA 25-9-411. For many years the cap was a flat $250,000. That figure is now outdated.

In 2025, House Bill 195 raised the cap and put it on an escalating schedule. The cap became $300,000 effective March 27, 2025, rises to $350,000 on January 1, 2026, and then steps up to $400,000 in 2027, $450,000 in 2028, and $500,000 in 2029. Beginning January 1, 2030, the cap increases by 2 percent each year. For 2026 the applicable cap is $350,000. That is the figure our Montana settlement calculator is built around for a 2026 claim.

The cap that applies to a claim is the one in effect on the date the claimant first files with the Montana Medical Legal Panel, or, for claims not subject to the panel, the date suit is filed. The cap has not been struck down. Section 25-9-411 remains in force in the current Montana Code Annotated, and no Montana court decision has invalidated it.

What the Cap Does and Does Not Limit

The cap applies only to noneconomic damages. Economic damages, including past and future medical expenses, lost wages, and lost earning capacity, are not capped. The cap covers a claimant's total past and future noneconomic loss from a single incident, even against multiple providers, and the statute provides that the cap may not be disclosed to the jury.

The Montana Medical Legal Panel

Montana requires pre-suit review by the Montana Medical Legal Panel. Under MCA 27-6-701, no malpractice claim may be filed in any court against a health care provider before an application is made to the panel and its decision is rendered. This panel review is a mandatory precondition to filing suit.

Under MCA 27-6-301, a claimant submits the case by sending a written application, signed by the claimant or the claimant's attorney, to the director of the panel before filing a complaint in a Montana court. The panel reviews the claim and renders an opinion, which is advisory. Certain claims, such as those covered by a valid arbitration agreement, fall outside the panel process. Since the panel must rule before any suit is filed, get a free consultation with a Montana malpractice lawyer on getting the application to the panel early in the two-year window (attorney advertising).

Certificate or Affidavit of Merit

Montana does not require a separate certificate or affidavit of merit to be filed with the complaint. The mandatory Medical Legal Panel review serves the screening function that an affidavit of merit performs in other states. The panel may consult expert witnesses and assist the claimant in obtaining expert consultation, but the obligation to prove the case with qualified expert testimony remains with the plaintiff.

Standard of Care and Who May Be Liable

A Montana medical malpractice claim turns on whether the provider met the applicable standard of care, which is generally established through expert testimony. Under MCA 26-2-601, an expert who testifies on the standard of care must be licensed as a health care provider, must have routinely treated the relevant condition within the previous five years, and must be thoroughly familiar with the standards of care at issue. An expert in one specialty generally cannot testify against a provider in another specialty unless the standards are shown to be substantially similar.

The providers who may be liable include physicians, surgeons, physician assistants, dentists, registered and advanced practice nurses, optometrists, podiatrists, psychologists, chiropractors, pharmacists, physical therapists, and licensed hospitals and long-term care facilities, among others. Hospitals may also be liable for the conduct of their staff.

Comparative Negligence

Montana follows modified comparative negligence under MCA 27-1-702. A patient who is partly at fault can still recover, but any award is reduced by the patient's percentage of fault. Recovery is allowed only if the patient's fault is not greater than the combined fault of the parties from whom recovery is sought. A patient who is more than 50 percent at fault is barred from recovering, while a patient at exactly 50 percent can still recover a reduced amount.

Wrongful-Death Medical Malpractice

When malpractice causes death, the medical malpractice statute sets the deadline, not the general wrongful-death statute. Section 27-2-205 applies by its own terms to an action in tort or contract for injury or death against a physician, surgeon, licensed hospital, or other listed health care provider based on alleged professional negligence. A malpractice death claim therefore runs on the same two-year period, measured from the date of injury or from discovery, whichever occurs last, and the same five-year outer limit, including the tolling provisions described above.

The three-year period in MCA 27-2-204 is the general wrongful-death limitation. It governs a death caused by wrongful act or neglect that does not arise from professional negligence by a health care provider.

Under MCA 27-1-513, a wrongful-death action is brought by the personal representative of the decedent's estate on behalf of the heirs, and a related survival claim under MCA 27-1-501 lets the estate recover damages the decedent could have pursued. Because the claimants and deadlines differ from an ordinary injury case, families should confirm both with counsel.

How to Evaluate and Preserve a Possible Claim

If you believe medical care caused harm, request complete medical records promptly and write down the timeline while details are fresh, because the panel-review step takes time and the deadlines are strict. Most Montana medical malpractice attorneys offer a free initial consultation and work on a contingency fee, meaning the fee comes from any recovery. No attorney can guarantee an outcome or a dollar amount, and every case depends on its specific facts and the governing deadlines.

Frequently Asked Questions

What is the deadline to sue for medical malpractice in Montana?

Generally two years from the date of injury or from discovery, whichever occurs last, under MCA 27-2-205, and in no case more than five years from the date of injury. That five-year limit is tolled for any period during which the provider failed to disclose the act, error, or omission, and a separate discovery-tolling provision applies to certain injuries. Deadlines are strict, so confirm yours with a Montana-licensed attorney.

Does Montana cap medical malpractice damages?

Yes, but only noneconomic damages such as pain and suffering, under MCA 25-9-411. The cap was $250,000 for years but was raised by 2025 legislation. For 2026 it is $350,000, rising to $500,000 by 2029 and then 2 percent each year. Economic damages like medical bills and lost wages are not capped.

Do I need an expert affidavit to file in Montana?

No separate certificate or affidavit of merit is required. Instead, Montana requires you to submit the case to the Montana Medical Legal Panel before filing suit (MCA 27-6-301 and 27-6-701). You still need qualified expert testimony to prove the standard of care under MCA 26-2-601.

What is the Montana Medical Legal Panel?

It is a state review panel that must review a malpractice claim before a lawsuit can be filed against a health care provider. Under MCA 27-6-701, no claim may be filed in court until an application is made to the panel and its decision is rendered. The panel's opinion is advisory and does not replace a trial.

How much is a Montana medical malpractice case worth?

There is no standard value. Economic damages such as medical costs and lost income are not capped, while noneconomic damages are limited by the cap for the relevant year ($350,000 in 2026). The value of any case depends on the specific injuries, evidence, liability, and fault allocation. No attorney can promise an outcome or amount.

Has the Montana damage cap been struck down?

No. The noneconomic cap under MCA 25-9-411 remains in force in 2026, appears in the current Montana Code Annotated, and has not been invalidated by any Montana court decision.

What happens if I was partly at fault for my injury?

Montana uses modified comparative negligence (MCA 27-1-702). Your recovery is reduced by your percentage of fault, and a patient more than 50 percent at fault recovers nothing. A patient at exactly 50 percent can still recover a reduced amount.

What is the deadline for a wrongful-death medical malpractice claim in Montana?

The medical malpractice statute controls, not the general wrongful-death statute. MCA 27-2-205 covers an action for injury or death against a health care provider based on alleged professional negligence, so the two-year period (from injury or from discovery, whichever occurs last) and the five-year outer limit apply. The general three-year period in MCA 27-2-204 governs wrongful-death claims that do not arise from malpractice. The action is brought by the personal representative of the estate on behalf of the heirs under MCA 27-1-513, and a licensed attorney can confirm the deadline for a specific case.