No individual or group policy of accident and health insurance which covers the insured's immediate family or children, as well as covering the insured, shall exclude a child from coverage or limit coverage for a child solely because the child is an adopted child, or solely because the child does not reside with the insured. For purposes of this Section, a child who is in the custody of the insured, pursuant to an interim court order of adoption or, in the case of group insurance, placement of adoption, whichever comes first, vesting temporary care of the child in the insured, is an adopted child, regardless of whether a final order granting adoption is ultimately issued.
215 ILCS 5/356h