IDEA defines "child with a disability" as:
a child . . . with mental retardation, hearing impairments (including deafness), speech or language impairments, visual impairments (including blindness), serious emotional disturbance . . ., orthopedic impairments, autism, traumatic brain injury, other health impairments, or specific learning disabilities . . . who . . . [because of the condition] needs special education and related services.