Amends the Abandoned Newborn Infant Protection Act. Replaces all instances of "child-placing agency" or "child placing agency" with "child welfare agency". In provisions concerning the Department of Children and Family Services' State Central Registry of child welfare agencies willing to take legal custody of relinquished newborn infants, provides that within 3 business days after accepting a referral from the Department, the child welfare agency shall file a petition for custody and request that the agency be given the authority to place the infant in an adoptive home, foster home, child care facility, or other facility appropriate for the needs of the infant. Prohibits filing or appearance fees for the petitioner. Provides that any issued custody order shall grant the child welfare agency the authority to make medical and health-related decisions for the infant. Provides that any health care provider or child welfare agency that provides medical services to an infant under the Act shall send all bills related to those medical services directly to the Department of Healthcare and Family Services for reimbursement. Makes conforming changes to the Medical Assistance Article of the Illinois Public Aid Code. Requires the Department of Healthcare and Family Services to submit for federal approval any waiver application or State Plan amendment as may be necessary to implement the presumptive eligibility provisions of the amendatory Act. Provides that if the person who relinquished or a person claiming to be the parent of a newborn infant returns to reclaim the infant within 30 days after the infant was relinquished to a fire station, emergency medical facility, or police station, then the fire station, emergency medical facility, or police station must inform such person of the name and location of the hospital to which the infant was transported. Requires a hospital, police station, fire station, or emergency medical facility that accepts a relinquished infant to offer the relinquishing person information about the relinquishment process and other information. Provides that the failure to provide such information or the failure of the relinquishing person to accept such information shall not invalidate the relinquishment under the Act. In a provision concerning relinquished infants eligibility for medical assistance under Article V of the Illinois Public Aid Code, requires a hospital to complete and submit an application for medical assistance on behalf of a relinquished infant and permits the Department of Healthcare and Family Services to adopt rules. behalf of a relinquished infant and permits the Department of Healthcare and Family Services to adopt rules. Amends the Immunization Data Registry Act, the Illinois Parentage Act of 2015, and the Adoption Act by replacing instances of "child-placing agency" or "child placing agency" with "child welfare agency.” Makes other changes.