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 a hard outer deadline that applies regardless of when the injury is discovered, subject to the narrow exceptions in the statute.

One of those exceptions is a 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 exceptions are narrow and 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 That figure is now outdated.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.

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. Montana courts have not ruled on its constitutionality, and prior challenges ended in settlement before any decision.

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.

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 claim is subject to a three-year deadline under MCA 27-2-204, measured from the death. 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.