(1) In this Act, "disability" means—
(a) an impairment, or any combination of impairments, that—
(i) is, or is likely to be, permanent; and
(ii) may, or may not, be attributable to a psychiatric condition; and
(iii) causes, or is likely to cause, a person to require lifelong support; and
(iv) results in a person having substantially reduced functional capacity to undertake one or more of the following activities—
(A) communication;
(B) social or economic participation;
(C) social interaction;
(D) learning;
(E) mobility;
(F) self-care;
(G) self-management; or
(b) a developmental delay.
(2) For the purposes of the definition of disability in subsection (1)—
"developmental delay" means a delay in the development of a child under the age of 6 years that—
(a) is attributable to an impairment, or any combination of impairments; and
(b) results in substantial functional limitations to undertake one or more of the following activities—
(i) self-care;
(ii) receptive and expressive language;
(iii) cognitive development;
(iv) motor development; and
(c) reflects the child's need for a combination and sequence of special interdisciplinary, or generic care, treatment or other services which are of extended duration and are individually planned and coordinated.