(1) The effective date of rate changes for services covering a period starting before and ending after the statutory effective date shall be as follows:(1) For a rate increase, the new rate shall apply to the first billing period starting on or after the effective date; and(2) For a rate decrease, the new rate shall apply to bills rendered on or after the effective date.
(1) For a rate increase, the new rate shall apply to the first billing period starting on or after the effective date; and
(2) For a rate decrease, the new rate shall apply to bills rendered on or after the effective date.