Louisiana Children's Code Tit. XII, Art. 1189. Grounds for disclosure

(1) There are inheritance rights which are or may be due from the biological parents of the adopted person in accordance with the Civil Code.

(2) There is a medical necessity requiring information about the biological family of the adopted person or his own preadoption health history in order to treat the adopted person, his siblings, or his descendants.

(3) Both the adopted person, or the adoptive parent of a minor or a deceased adoptive person, or a descendant of a deceased adopted person, or his parent if a minor, and a person reasonably believed to be his biological parent or biological sibling, or a parent, sibling, or descendant, or his parent if a minor, of a deceased biological parent have registered with the department pursuant to Chapter 15 of this Title.

(4) The information is otherwise required to be disclosed by federal or state law.