Iowa Code § 726.3

A person who is the father, mother, or some other person having custody of a child, or of any other person who by reason of mental or physical disability is not able to care for the person’s self, who knowingly or recklessly exposes such person to a hazard or danger against which such person cannot reasonably be expected to protect such person’s self or who deserts or abandons such person, knowing or having reason to believe that the person will be exposed to such hazard or danger, commits a class “C” felony. However, a parent or person authorized by the parent shall not be prosecuted for a violation of this section involving abandonment of a newborn infant, if the parent or the person authorized by the parent has voluntarily released custody of the newborn infant in accordance with section 233.2.