"Exceptional increase" - only those increases filed by an insurer as exceptional for which the Commissioner determines the need for the premium rate increase is justified for the following reasons:
Except as provided in section 2617, exceptional increases are subject to the same requirements as other premium rate schedule increases.
The Commissioner may request a review by an independent actuary or a professional actuarial body of the basis for a request that an increase be considered an exceptional increase.
The Commissioner, in determining that the necessary basis for an exceptional increase exists, shall also determine any potential offsets to higher claims costs.
D.C. Mun. Regs. tit. 26, r. 26-A2601