If the surname of the child, the name of the father of the child, or other information pertaining to the father as it was entered on the birth certificate was that of the man who was presumed to be the father of the child under Civil Code Article 185 or 186 and if the mother of the child, after the birth certificate was prepared, obtains a final and definitive judgment contesting and establishing paternity of the child, the state registrar, upon receipt of a certified copy of that final and definitive judgment, shall amend the birth certificate as follows:

            (1) Strikethroughs: Strike through the surname of the child, the name of the father of the child, and the other information pertaining to the father, in particular, his age, race, ethnicity, residence, birthplace, and social security number.

            (2) Additions:

            (a) For the surname of the child, enter either that of the present husband of the mother or, if both agree, her maiden name or surname or a combination of his surname and her maiden name or surname.

            (b) For the name of the father and his age, race, ethnicity, residence, birthplace, and social security number, enter those of the present husband of the mother.

            (c) Upon the petition of the mother of the child, a court may, for good cause shown, order the state registrar to enter, as the surname of the child, the maiden name or surname of the mother or a combination of the surname of the man whose surname should otherwise be given to the child under Subparagraph (a) of this Paragraph and the maiden name or surname of the mother, whichever she may choose, even if that man does not concur.

            Acts 2016, No. 434, §3.