As used in this chapter, the following terms mean:
(1) "Administrator", the department of health and senior services;
(2) "Child", any persons under twenty-one years of age;
(3) "Service", the children's special health care needs service;
(4) "Services", medical, surgical, corrective, diagnostic, hospitalization, and related services, including after care, and all things reasonably incident and necessary to make the service available to the child.