Section 8K. Any contract, except contracts providing supplemental coverage to medicare or other governmental programs, between a subscriber and the corporation under an individual or group hospital service plan which is delivered, issued for delivery or renewed in the commonwealth while this provision is effective and which provides pregnancy-related benefits shall provide as a benefit for all individual subscribers or members within the commonwealth and all group members having a principal place of employment within the commonwealth, to the same extent that benefits are provided for other pregnancy-related procedures, coverage for medically necessary expenses of diagnosis and treatment of infertility. Said infertility benefits shall meet all other terms and conditions of the subscriber certificate. For purposes of this section, “infertility” shall mean the condition of a presumably healthy individual who is unable to conceive or produce conception during a period of one year.