Whenever substance use disorder services are a covered benefit under a health benefit plan subject to this chapter, a health carrier shall:

I. Be required to offer at least one medication-assisted treatment therapy option approved by the federal Food and Drug Administration for treatment of substance use disorders without a requirement for prior authorization.

II. Not require a renewal of a prior authorization for a medication-assisted treatment therapy for treatment of substance use disorders more frequently than once every 12 months.

See https://www.gencourt.state.nh.us/rsa/html/NHTOC/NHTOC-XXXVII-420-J.htm