(1) DSHS must give written notification to each provider regarding DSHS's prospective reimbursement rate.

(2) Unless specified at the time the reimbursement rate is issued, the rate will be effective from the first day of the month the rate is issued until a new rate becomes effective.

(3) If a rate is changed because of a successful provider appeal, the effective date of the new rate is the same as the effective date of the old rate.