Tennessee Code Title 20. Civil Procedure § 20-10-101

(a)(1) In cases where, in the opinion of the trial judge, a jury verdict is not adequate to compensate the plaintiff or plaintiffs in compensatory damages or punitive damages, the trial judge may suggest an additur in such amount or amounts as the trial judge deems proper to the compensatory or punitive damages awarded by the jury, or both such classes of damages.

(2) If the additur is accepted by the defense, it shall then be ordered by the trial judge and become the verdict, and if not accepted, the trial judge shall grant the plaintiff's motion for a new trial because of the inadequacy of the verdict upon proper motion being made by the plaintiff.

(b)(1) In all jury trials had in civil actions, after the verdict has been rendered and on motion for a new trial, when the trial judge is of the opinion that the verdict in favor of a party should be increased and an additur is suggested by the trial judge on that account, with the proviso that in case the party against whom the verdict has been rendered refuses to make the additur, a new trial will be awarded, the party against whom such verdict has been rendered may make such additur under protest, and appeal from the action of the trial judge to the court of appeals.

(2) The court of appeals shall review the action of the trial court suggesting an additur using the standard of review provided for in the Tennessee Rules of Appellate Procedure 13(d) applicable to decisions of the trial court sitting without a jury. If the court of appeals is of the opinion that the verdict of the jury should not have been increased or that the amount of the additur is improper, but that the judgment of the trial court is correct in all other respects, the case shall be reversed to that extent, and the court of appeals may order remitted all or any part of the additur.