(1) Any party may have a judicial proceeding for the declaration of rights or legal relations with respect to: Any matter, as defined in section 15-8-103, Idaho Code;
(2) The resolution of any other case or controversy that arises under the Idaho Code and referenced judicial proceedings under this chapter; or
(3) The determination of the persons entitled to notice under section 15-8-204, Idaho Code.
(4) The provisions of this chapter apply to disputes arising in connection with estates of incapacitated persons unless otherwise covered by chapter 5, title 15, Idaho Code. The provisions of this chapter shall not supersede, but shall supplement, any otherwise applicable provisions and procedures contained in title 15, Idaho Code, or other Idaho law. The provisions of this chapter shall not apply to actions for wrongful death under any other chapter or title of Idaho Code.