215 ILCS 5/353a
The reserves for all accident and health policies issued after the operative date of this section shall be computed and maintained on a basis which shall place an actuarially sound value on the liabilities under such policies. To provide a basis for the determination of such actuarially sound value, the Director from time to time shall adopt rules requiring the use of appropriate tables of morbidity, mortality, interest rates and valuation methods for such reserves for policies issued before January 1, 2017. For policies issued on or after January 1, 2017, Section 223 shall govern the basis for determining such actuarially sound value. In no event shall such reserves be less than the pro rata gross unearned premium reserve for such policies.
The company shall give the notice required in section 234 on all non-cancellable accident and health policies.
After this section becomes effective, any company may file with the Director written notice of its election to comply with the provisions of this section after a specified date before January 1, 1967. After the filing of such notice, then upon such specified date (which shall be the operative date of this section for such company), this section shall become operative with respect to the accident and health policies thereafter issued by such company. If a company makes no such election, the operative date of this section for such company shall be January 1, 1967.
After this section becomes effective, any company may file with the Director written notice of its election to establish and maintain reserves upon its accident and health policies issued prior to the operative date of this section in accordance with the standards for reserves established by this section, and thereafter the reserve standards prescribed pursuant to this section shall be effective with respect to said accident and health policies issued prior to the operative date of this section.
215 ILCS 5/353a