North Carolina General Statute 122C-3(12a) defines a developmental disability as a severe, chronic disability of a person which is attributable to mental or physical impairment or combination of mental and physical impairments; is manifested before the person attains age 22, unless the disability is caused by traumatic head injury and is manifested after age 22; is likely to continue indefinitely; results in substantial functional limitations in three or more of the following areas of major life activity: (a) self-care, (b) reception (understanding) and expressive language, (c) learning, (d) mobility (ability to move), (e) self-direction (motivation), (f) the capacity for independent living, (g) economic self-sufficiency; reflects the person’s need for a combination or sequence of special interdisciplinary services which are of a lifelong or extended duration and are individually planned and coordinated; or when applied to children from birth through four years of age, may be evidenced as developmental delay.