89 Ill. Adm. Code 590.50
Provision of Services
Section 590
Section 590.50 Provision of
Services
a) All services described in this Subpart shall be provided in
accordance with the provisions of this Subpart and Subpart A of this Part.
b) All services provided in accordance with this Subpart shall be
recommended in writing by the qualified professional as specified in Section
590.60.