(a) Chapters 256, 257, and 518 and sections 524.5-201 to 524.5-317 apply to third-party and de facto custody proceedings unless otherwise specified in this chapter. De facto or third-party child custody proceedings concerning an Indian child are child custody proceedings governed by the Indian Child Welfare Act, United States Code, title 25, sections 1901 to 1963; by the Minnesota Indian Family Preservation Act, sections 260.751 to 260.835 ; and by this chapter when not inconsistent with the Indian Child Welfare Act or the Minnesota Indian Family Preservation Act.
(b) Nothing in this chapter relieves a parent of a duty to support the parent's child. A preexisting child support order is not suspended or terminated when a third party takes custody of a child unless otherwise provided by court order. A de facto or third-party custodian has a cause of action against a parent for child support under section 518A.82, subdivision 5 , and the public authority has a cause of action against a parent for child support under section 518A.82, subdivision 1 .
(c) Nothing in this chapter prohibits the establishment of parentage under chapter 257.