42 CFR §403.258

1. (a)For purposes of certification requests submitted under § 403.232(b) and subsequent review as specified in § 403.239(a), statement of actuarial opinion means a signed declaration in which a qualified actuary states that the assumptions used in calculating the expected loss ratio are appropriate and reasonable, taking into account actual policy experience, if any, and reasonable expectations.
2. (b)Qualified actuary means—
   1. (1)A member in good standing of the American Academy of Actuaries; or
   2. (2)A person who has otherwise demonstrated his or her actuarial competence to the satisfaction of the Commissioner or Superintendent of Insurance of the domiciliary State of the insuring organization.