NRS 125B.050: Period of limitations.

1. If there is no court order for support, any demand in writing to a parent not having physical custody for payment of support on behalf of a minor child, mailed to the last known address of the parent, tolls the running of the statute of limitations for the bringing of an action for that support.

2. A motion for relief after judgment and an independent action to enforce a judgment for support of a child may be commenced at any time.

3. If a court has issued an order for the support of a child, there is no limitation on the time in which an action may be commenced to:

(a) Collect arrearages in the amount of that support; or

(b) Seek reimbursement of money paid as public assistance for that child.