Idaho Code § 45-701: Right to lien conferred.

Every individual, partnership, firm, association, corporation, institution or any governmental unit or combination or parts thereof maintaining and operating a hospital in this state shall be entitled to a lien for the reasonable charges for hospital care, treatment and maintenance of an injured person upon any and all causes of action, suits, claims, counterclaims, or demands accruing to the person to whom such care, treatment, or maintenance was furnished, or to the legal representatives of such person, on account of injuries giving rise to such causes of action and which necessitated such hospital care, treatment and maintenance.