85.45  Commutation.
  1.  Future payments of compensation may be commuted to a present worth lump sum payment on the following conditions:
  a.  When the period during which compensation is payable can be definitely determined.
  b.  When it shall be shown to the satisfaction of the workers’ compensation commissioner that such commutation will be for the best interest of the person or persons entitled to the compensation, or that periodical payments as compared with a lump sum payment will entail undue expense, hardship, or inconvenience upon the employer liable therefor.
  c.  When the recipient of commuted benefits is a minor employee, the workers’ compensation commissioner may order that such benefits be paid to a trustee as provided in section 85.49.
  d.  When a person seeking a commutation is a surviving spouse, an employee with a permanent and total disability, or a dependent who is entitled to benefits as provided in section 85.31, subsection 1, paragraph “a”, subparagraphs (3) and (4), the future payments which may be commuted shall not exceed the number of weeks which shall be indicated by probability tables designated by the workers’ compensation commissioner for death and remarriage, subject to the provisions of chapter 17A.
  2.  Future payments of compensation shall not be commuted to a present worth lump sum payment when the employee is an inmate as set forth in section 85.59.
[S13, §2477-m14; C24, 27, 31, 35, 39, §1405; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §85.45]
96 Acts, ch 1129, §19; 98 Acts, ch 1061, §11; 2008 Acts, ch 1032, §171

See also §87.11(4)