N.H. Rev. Stat. § 332-L:1
In this chapter, "conversion therapy" means practices or treatments that seek to change an individual's sexual orientation or gender identity, including efforts to change behaviors or gender expressions or to eliminate or reduce sexual or romantic attractions or feelings toward individuals of the same gender. Conversion therapy shall not include counseling that provides assistance to a person undergoing gender transition, or counseling that provides acceptance, support, and understanding of a person or facilitates a person's coping, social support, and identity exploration and development, including sexual-orientation-neutral interventions to prevent or address unlawful conduct or unsafe sexual practices, as long as such counseling does not seek to change an individual's sexual orientation or gender identity.
RSA 332-L:1
2018, 167:1, eff. Jan. 1, 2019.