(a) For the purpose of providing notification to the custodial parent under Insurance Code §1504.054 and §21.2008 of this title (relating to Information Provided by an Insurer), the custodial parent must notify the insurer of any change of address. If no such change of address is submitted by the custodial parent to the insurer, then the insurer must comply with the provisions of Insurance Code §1504.054 and §21.2008 of this title (relating to Information Provided by an Insurer) regarding notification to the custodial parent if such notice is sent to the last known address of the custodial parent.(b) The insurer must enroll or continue enrollment of the child on application of a parent of the child, a child support agency, or the child over 18 years of age.