As used in this Article, unless the context requires otherwise:
A determination of severe mental illness shall be based upon a comprehensive, documented assessment with an evaluation by a licensed clinical psychologist or psychiatrist, and shall not be based solely on behaviors relating to environmental, cultural or economic differences.
A determination of a severe or profound intellectual disability shall be based upon a comprehensive, documented assessment with an evaluation by a licensed clinical psychologist or certified school psychologist or a psychiatrist, and shall not be based solely on behaviors relating to environmental, cultural or economic differences.
Assessment of physical functioning must be based on clinical medical assessment by a physician licensed to practice medicine in all its branches, using the appropriate instruments, techniques and standards of measurement required by the professional.
A determination of severe and multiple impairments shall be based upon a comprehensive, documented assessment with an evaluation by a licensed clinical psychologist or psychiatrist.
If the examiner is a licensed clinical psychologist, ancillary evaluation of physical impairment, cerebral palsy or epilepsy must be made by a physician licensed to practice medicine in all its branches.
Regardless of the discipline of the examiner, ancillary evaluation of visual impairment must be made by an ophthalmologist or a licensed optometrist.
Regardless of the discipline of the examiner, ancillary evaluation of hearing impairment must be made by an otolaryngologist or an audiologist with a certificate of clinical competency.
The only exception to the above is in the case of a person with cerebral palsy or epilepsy who, according to the eligibility criteria listed below, has multiple impairments which are only physical and sensory. In such a case, a physician licensed to practice medicine in all its branches may serve as the examiner.
405 ILCS 80/2-3