There may be created within each health care corporation a Michigan caring program for children. The program shall provide primary health care coverage for children as set forth in section 438 and shall be administered by the health care corporation. Each program shall be described in a certificate that sets forth the benefits provided. A certificate and the contribution to be charged shall be subject to the commissioner’s approval. Contribution requirements shall be established in accordance with rating methodologies approved by the commissioner which, over time, shall not result in either gain or loss to the corporation. The rating methodology for a program shall not include any factors otherwise includable pursuant to other sections of this act that are intended to provide for subsidies, surcharges, or administrative costs. Any other provisions of this act that would otherwise apply to a program but which are inconsistent with the provisions of this section and section 437 to 439 are superseded.