Iowa's Supreme Court has ruled unanimously that the state's health department must include the names of both same-sex spouses as parents on a child's birth certificate.
The ruling stems from a challenge brought by Heather and Melissa Gartner of Des Moines, following the Iowa Department of Public Health's refusal in 2009 to list Heather as a parent on their daughter's birth certificate.
The couple was married that same year, after Iowa legalized same-sex marriage.
Justice David Wiggins, who authored the opinion of the court, said the state had an interest in "the accuracy of birth certificates, the efficiency and effectiveness of government administration, and the determination of paternity."
Wiggins wrote that it was important "to recognize that married lesbian couples who have children enjoy the same benefits and burdens as married opposite-sex couples who have children.
"By naming the nonbirthing spouse on the birth certificate of a married lesbian couple's child, the child is ensured support from that parent and the parent establishes fundamental legal rights at the moment of birth," the opinion said.