Judgments, money, bank bills, and other things in action may be levied upon by the officer under an attachment in the same manner as levies are made under execution, except that notice of such levy shall be given as in levies by attachment, and after judgment such property shall be sold, appropriated, or transferred as provided for in the chapter on executions.
Iowa Code § 639.23
Executions, chapter 626
Levy on judgments, moneys, etc., §626.21, 626.22