(1)    From July 14, 2015, to April 17, 2017, the board may not charge an amount that exceeds the amount that was actually charged on April 17, 2015, for any of the following fees:

      (a)    Fees for services rendered by a coroner or medical examiner.

      (b)    Fees assessed for the signing of a death record by a coroner or medical examiner.

      (c)    Fees assessed related to coroner or medical examiner transportation services.

   (2)   If on or after April 18, 2017, the board increases the amount of any of the fees specified in sub. (1) (a) to (c), any such increase may not exceed the annual percentage change in the U.S. consumer price index for all urban consumers, U.S. city average, as determined by the U.S. department of labor, for the 12 months ending on December 31 of the year before the increase.

   (3)   

      (a)    Notwithstanding subs. (1) (a) and (b) and (2), if a board that had been providing coroner or lay medical examiner services begins providing physician medical examiner services under an intergovernmental cooperation agreement under s. 66.0301 after December 31, 2015, and before April 1, 2016, the board may one time set the fee assessed for the signing of a death record at an amount exceeding the amount that was in effect on April 17, 2015, by not more than $100 and may one time set the fee assessed for the issuance of a cremation permit at an amount exceeding the amount that was in effect on April 17, 2015, by not more than $100. Fees under this paragraph may be established without regard to any change in the U.S. consumer price index.

      (b)    This subsection does not apply to a county with a population of more than 300,000.