(A)(1) In the case of health insurance coverage offered in connection with a group health plan that provides both medical and surgical benefits and mental health or substance use disorder benefits:

(a) if the coverage does not include an aggregate lifetime limit on substantially all medical and surgical benefits, the coverage may not impose any aggregate lifetime limit on mental health or substance use disorder benefits;

(b) if the coverage includes an aggregate lifetime limit, also referred to in this item as the "applicable lifetime limit", on substantially all medical and surgical benefits, the coverage must either:

(i) apply the applicable lifetime limit both to the medical and surgical benefits to which it otherwise would apply and to mental health and substance use disorder benefits and not distinguish in the application of the limit between the medical and surgical benefits and mental health and substance use disorder benefits; or

(ii) not include any aggregate lifetime limit on mental health or substance use disorder benefits that is less than the applicable lifetime limit;

(c) in the case of coverage that is not described in subitem (a) or (b) and that includes no or different aggregate lifetime limits on different categories of medical and surgical benefits, the director or his designee may promulgate regulations under which subitem (b) is applied to the coverage with respect to mental health and substance use disorder benefits by substituting for the applicable lifetime limit an average aggregate limit that is computed taking into account the weighted average of the aggregate lifetime limits applicable to the categories.

(2) In the case of health insurance coverage offered in connection with a group health plan that provides both medical and surgical benefits and mental health or substance use disorder benefits:

(a) if the coverage does not include an annual limit on substantially all medical and surgical benefits, the coverage may not impose any annual limit on mental health or substance use disorder benefits;

(b) if the coverage includes an annual limit on substantially all medical and surgical benefits, referred to as the "applicable annual limit", the coverage must either:

(i) apply the applicable annual limit both to medical and surgical benefits to which it otherwise would apply and to mental health and substance use disorder benefits and not distinguish in the application of such limit between such medical and surgical benefits and mental health and substance use disorder benefits; or

(ii) not include any annual limit on mental health or substance use disorder benefits that is less than the applicable annual limit;

(c) in the case of coverage that is not described in subitem (a) or (b) and that includes no or different annual limits on different categories of medical and surgical benefits, the director or his designee may promulgate regulations under which subitem (b) is applied to the coverage with respect to mental health and substance use disorder benefits by substituting for the applicable annual limit an average annual limit that is computed taking into account the weighted average of the annual limits applicable to the categories.

(3) In the case of a group health plan, or health insurance coverage offered in connection with a plan, that provides both medical and surgical benefits and mental health or substance use disorder benefits, the plan or coverage must ensure that:

(a) the financial requirements applicable to the mental health or substance use disorder benefits are no more restrictive than the predominant financial requirements applied to substantially all medical and surgical benefits covered by the plan or coverage and there are no separate cost sharing requirements that are applicable only with respect to mental health or substance use disorder benefits; and

(b) the treatment of limitations applicable to the mental health or substance use disorder benefits are no more restrictive than the predominant treatment limitations applied to substantially all medical and surgical benefits covered by the plan or coverage and there are no separate treatment limitations that are applicable only with respect to mental health or substance use disorder benefits.

(4) In the case of a plan or coverage that provides both medical and surgical benefits and mental health or substance use disorder benefits, if the plan or coverage provides coverage for medical or surgical benefits provided by out-of-network providers, the plan or coverage must provide coverage for mental health or substance use disorder benefits provided by out-of-network providers in a manner that is consistent with the requirements of this section.

(B) To the extent consistent with § 38-71-737 and another applicable state law, nothing in this section may be construed:

(1) as requiring health insurance coverage offered in connection with a group health plan to provide any mental health or substance use disorder benefits; or

(2) in the case of a group health plan or health insurance coverage offered in connection with a plan that provides mental health or substance use disorder benefits, as affecting the terms and conditions of the plan or coverage relating to benefits under the plan or coverage, except as provided in subsection (A).

(C)(1) This section does not apply to a group health insurance coverage offered in connection with a group health plan for any plan year of a small employer.

(2) For purposes of this subsection, "small employer" means, in connection with a group health plan with respect to a calendar year and a plan year, an employer who employed an average of at least two but not more than fifty employees on business days during the preceding calendar year and who employs at least two employees on the first day of the plan year.

(3) For purposes of this subsection:

(a) All persons treated as a single employer under subsection (b), (c), (m), or (o) of Section 414 of the Internal Revenue Code of 1986 are treated as one employer.

(b) In the case of an employer which was not in existence throughout the preceding calendar year, the determination of whether the employer is a small employer is based on the average number of employees that it is reasonably expected the employer will employ on business days in the current calendar year.

(c) A reference in this subsection to an employer includes a reference to any predecessor of the employer.

(4) This section does not apply with respect to health insurance coverage offered in connection with a group health plan if the application of this section to this coverage results in an increase in the actual total cost for the coverage of at least two percent in the case of the first plan year or at least one percent in the case of a subsequent plan year. Determinations as to increases in actual total costs under a plan or coverage for purposes of this subsection must be made and certified by a qualified and licensed actuary who is a member in good standing of the American Academy of Actuaries. Determinations must be in a written report prepared by the actuary. The report, and all underlying documentation relied upon by the actuary, must be maintained by the group health plan and the health insurance issuer for a period of six years.

(5) When a group health insurance coverage offered in connection with a group health plan that qualifies for exemption pursuant to the provisions of item (2), the plan or coverage must continue to apply the requirements of applicable state law, including §§ 38-71-290 and 38-71-737, where required.

(D) In the case of health insurance coverage offered in connection with a group health plan that offers a participant or beneficiary two or more benefit package options under the plan, the requirements of this section are applied separately with respect to each option.

(E) For purposes of this section:

(1) "Aggregate lifetime limit" means, with respect to benefits under health insurance coverage, a dollar limitation on the total amount that may be paid with respect to the benefits under the health insurance coverage with respect to an individual or other coverage unit.

(2) "Annual limit" means, with respect to benefits under health insurance coverage, a dollar limitation on the total amount of benefits that may be paid with respect to the benefits in a twelve-month period under the health insurance coverage with respect to an individual or other coverage unit.

(3) "Financial requirement" includes deductibles, copayments, coinsurance, and out-of-pocket expenses, but excludes an aggregate lifetime limit and annual limit subject to subsections (A)(3)(a) and (A)(3)(b).

(4) "Medical or surgical benefits" means benefits with respect to medical or surgical services, as defined under the terms of the plan, but does not include mental health benefits.

(5) "Mental health benefits" means benefits with respect to services for mental health conditions, as defined under the terms of the plan and in accordance with applicable federal and state law.

(6) "Predominant" means a financial requirement or treatment limit that is the most common or frequent of the type of requirement or limit.

(7) "Substance use disorder benefits" means benefits with respect to services for substance use disorders, as defined under the terms of the plan and in accordance with applicable federal and state law.

(8) "Treatment limitation" includes limits on the frequency of treatment, number of visits, days of coverage, or other similar limits on the scope or duration of treatment.