(1) Environmental modifications are those physical adaptations to the home or vehicle which are necessary to safeguard the health, welfare, and safety of the person, or which enable the person to function with greater independence and without which the person would require institutionalization.
(2) An environmental modification must:
(a) relate specifically to and be primarily for a person with a disability;
(b) have utility primarily for a person who has a disability;
(c) not be an item or modification that a family would normally be expected to provide for a nondisabled family member;
(d) not be in the form of room and board or general maintenance;
(e) meet the specifications, if applicable, for the modification set by the American National Standards Institute (ANSI); and
(f) be prior authorized by the department if the cost of the project may exceed $4,000.