Indiana Code Title 27. Insurance § 27-7-5-6

Sec. 6. (a) The policy or endorsement affording the coverage specified in this chapter may also provide that payment to any person of sums as damages under such coverage shall operate to subrogate the insurer to any cause of action in tort which such person may have against any other person or organization legally responsible for the bodily injury or death, or property damage, because of which such payment is made.  The insurer shall be subrogated, to the extent of such payment, to the proceeds of any settlement or judgment that may later result from the exercise of any rights of recovery of such person against any person or organization legally responsible for said bodily injury or death, or property damage, for which payment is made by the insurer.  Such insurer may enforce such rights in its own name or in the name of the person to whom payment has been made, as in their interest may appear, by proper action in any court of competent jurisdiction.

(b) An insurer providing underinsured motorist coverage does not have a right of subrogation against an underinsured motorist if:

However, an insurer that, under the circumstances described in subdivision (1), advances payment to the insured in an amount equal to the amount provided for in the offer of agreement or settlement, has full rights of subrogation as provided in its policy or endorsement affording the underinsured motorist coverage.

(c) When an insurer makes payment under uninsured motorist coverage or underinsured motorist coverage because of the insolvency of an insolvent insurer (as defined in IC 27-6-8), the paying insurer's rights of reimbursement and subrogation do not include any rights of recovery against:

except that the paying insurer may recover from the insured of the insolvent insurer that part of its payment that exceeds the limits of liability of the policy of the insolvent insurer.