(1) In an action brought as a result of a death or an injury due to medical negligence, no defendant shall be liable for an amount greater than that represented by the degree or percentage of the negligence or fault attributable to such defendant that produced the claimed injury, death, damage, or loss.
(2) The factfinder shall make special findings determining the percentage of negligence or fault attributable to each of the parties and any persons not parties to the action of whom notice has been given to whom some negligence or fault is found, determining the total amount of damages sustained by each claimant. The entry of judgment shall be made by the court based on these findings.
(3) (a) Any provision of the law to the contrary notwithstanding, the finder of fact in a civil action may consider the degree or percentage of negligence or fault of a person not a party to the action, based upon evidence thereof, which shall be admissible, in determining the degree or percentage of negligence or fault of those persons who are parties to such action. Any finding of a degree or percentage of fault or negligence of a nonparty shall not constitute a presumptive or conclusive finding as to such nonparty for the purposes of a prior or subsequent action involving that nonparty.
(b) Negligence or fault of a nonparty may be considered if the claimant entered into a settlement agreement with the nonparty or if the defending party gives notice that a nonparty was wholly or partially at fault within ninety days following commencement of the action unless the court determines that a longer period is necessary. The notice shall be given by filing a pleading in the action designating such nonparty and setting forth such nonparty's name and last-known address, or the best identification of such nonparty which is possible under the circumstances, together with a brief statement of the basis for believing such nonparty to be at fault.
(4) In a jury trial in any civil action in which contributory negligence or comparative fault is an issue for determination by the jury, the trial court shall instruct the jury on the effect of its finding as to the degree or percentage of negligence or fault as between the plaintiff or plaintiffs and the defendant or defendants. However, the jury shall not be informed as to the effect of its finding as to the allocation of fault among two or more defendants. The attorneys for each party shall be allowed to argue the effect of the instruction on the facts which are before the jury.