Montana Title 27. Civil Liability, Remedies, and Limitations § 27-2-205. Actions for medical malpractice

(1) Action in tort or contract for injury or death against a physician or surgeon, physician assistant, dentist, dental hygienist, registered nurse, advanced practice registered nurse, nursing home or hospital administrator, dispensing optician, optometrist, licensed physical therapist, podiatrist, psychologist, osteopath, chiropractor, clinical laboratory bioanalyst, clinical laboratory technologist, pharmacist, veterinarian, a licensed hospital or long-term care facility, or licensed medical professional corporation, based upon alleged professional negligence or for rendering professional services without consent or for an act, error, or omission, must, except as provided in subsection (2), be commenced within 2 years after the date of injury or within 2 years after the plaintiff discovers or through the use of reasonable diligence should have discovered the injury, whichever occurs last, but in no case may an action be commenced after 5 years from the date of injury. However, this time limitation is tolled for any period during which there has been a failure to disclose any act, error, or omission upon which an action is based and that is known to the defendant or through the use of reasonable diligence subsequent to the act, error, or omission would have been known to the defendant.

(2) Notwithstanding the provisions of 27-2-401, in an action for death or injury of a minor who was under the age of 4 on the date of the minor's injury, the period of limitations in subsection (1) begins to run when the minor reaches the minor's eighth birthday or dies, whichever occurs first, and the time for commencement of the action is tolled during any period during which the minor does not reside with a parent or guardian.