252H.21  Purpose — intent — effect on requirements for guidelines.
  1.  This subchapter is intended to provide a procedure to accommodate a request of both parents to expeditiously change a support order due to changes in the cost of living.
  2.  All of the following shall apply to a cost-of-living alteration under this subchapter:
  a.  To the extent permitted under 42 U.S.C. §  666(a)(10)(A)(i)(II), the cost-of-living alteration shall be an exception to any requirement under law for the application of the child support guidelines established pursuant to section 598.21B, including but not limited to any requirement in this chapter or chapter 234, 252A, 252B, 252C, 252F, 598, or 600B.
  b.  The cost-of-living alteration shall not prevent any subsequent modification or adjustment to the support order as otherwise provided in law based on application of the child support guidelines.
  c.  The calculation of a cost-of-living alteration to a child support order shall be compounded as follows:
  (1)  Increase or decrease the child support order by the percentage change of the appropriate consumer price index for the month and year after the month and year the child support order was last issued, modified, adjusted, or altered.
  (2)  Increase or decrease the amount of the child support order calculated in subparagraph (1) for each subsequent year by applying the appropriate consumer price index for each subsequent year to the result of the calculation for the previous year. The final year in the calculation shall be the year immediately preceding the year the unit received the completed request for the cost-of-living alteration.
  d.  The amount of the cost-of-living alteration in the notice in section 252H.24, subsection 1, shall be the result of the calculation in paragraph “c”.
97 Acts, ch 175, §106; 2005 Acts, ch 69, §29