N.H. Rev. Stat. Ann. § 415:15

Discrimination between individuals of the same class in the amount of premiums or rates charged for any policy of insurance covered by this chapter, or in the benefits payable thereon, or in any of the terms or conditions of such policy, or in any other manner whatever, is prohibited. Discrimination on the basis of gender identity with respect to the availability of any covered services, medications, supplies, or durable medical equipment is specifically prohibited.