N.H. Rev. Stat. Ann. § 137-J:23

A person who knowingly and falsely makes, alters, forges, or counterfeits, or knowingly and falsely causes to be made, altered, forged, or counterfeited, or procures, aids or counsels the making, altering, forging, or counterfeiting, of an advance directive or revocation of same with the intent to injure or defraud a person shall be guilty of a class B felony, notwithstanding any provisions in title LXII.