The term “developmental disability” means a severe, chronic disability of a person that:
(1) Is attributable to a mental or physical impairment or combination of mental and physical impairments;
(2) Is manifested before the person attains age twenty-two (22);
(3) Is likely to continue indefinitely;
(4) Results in substantial functional limitations in three (3) or more of the following areas of major life activity:
(i) Self-care;
(ii) Receptive and expressive language;
(iii) Learning;
(iv) Mobility;
(v) Self-direction;
(vi) Capacity for independent living; and
(vii) Economic self-sufficiency; and
(5) Reflects the person’s need for a combination and sequence of special, interdisciplinary, or generic care, treatment, or other services that are of lifelong or extended duration and are individually planned and coordinated.