N.H. Rev. Stat. § 448-A:1
Every individual, partnership, firm, association, corporation, institution or any governmental unit or combination or parts thereof maintaining and operating a hospital licensed in the state of New Hampshire which shall furnish medical or other service to any patient injured by reason of an accident not covered by the workers' compensation act or any home health care provider licensed under RSA 151 who furnishes medical or other services to any patient injured by reason of an accident not covered by the workers' compensation act shall, if such injured patient shall assert or maintain a claim against another for damages on account of such injuries, have a lien upon that part going or belonging to such patient, or to the person responsible for the payment of such patient's bills, of any recovery or sum had or collected or to be collected by such patient or by the person responsible for the payment of such patient's bills, or by his heirs or personal representatives in the case of his death, whether by judgment or by settlement or compromise, to the amount of the reasonable and necessary charges of such hospital or home health care provider for the treatment, care and maintenance of such patient by the hospital or by the home health care provider up to the date of payment of such damages. The provisions of this chapter shall not be applicable to accidents and injuries within the purview of the workers' compensation law.
RSA 448-A:1
1955, 276:1. RSA 448-A:1. 1987, 123:2, eff. July 6, 1987.