Except in the case of a medical emergency, prior to performing an abortion upon a woman subsequent to her first 19 weeks of pregnancy, the physician shall determine whether, in his or her good faith medical judgment, the child is viable. When the physician has determined that a child is viable, he or she shall report the basis for his or her determination that the abortion is necessary to prevent either the death of the pregnant woman or the substantial and irreversible impairment of a major bodily function of the woman. When the physician has determined that a child is not viable after the first 19 weeks of pregnancy, he or she shall report the basis for such determination.