N.H. Code Admin. R. Cor 502.08
Except as provided in Cor 502.07 and 504.04, medical treatment shall be administered only with the consent of the resident or the resident’s duly appointed legal guardian. In the event a resident is legally incapacitated, as defined in RSA 464-A:2, XI, to consent to medical treatment which, in the opinion of the departmental physician, or APRN, would tend to promote the physical or behavioral health of the resident, and the resident does not have a legal guardian, the director of medical and forensic services shall consult with and refer the matter to the department of justice who shall petition the appropriate court for the appointment of a guardian or guardian ad litem pursuant to RSA 464-A.
Source. (See Revision Note at chapter heading for Cor 500) #12793, eff 5-25-19