Ill. Admin. Code tit. 20, § 1905.90
a) Licensed treatment providers shall utilize sexual abuser-specific treatment that is guided by ethical principles and current empirical research in order to maximize treatment effectiveness, promote public safety, facilitate prosocial goals for clients, and maintain the integrity of the profession.
1) Treatment providers utilize sexual abuser-specific treatment in accordance with any additional ethical standards, codes, laws or other expectations for the respective profession or discipline of practice. This includes ethical standards pertaining to, but not limited to, the following:
b) Assessment-Driven Treatment
Treatment providers shall recognize the importance of individualized, assessment-driven treatment services and deliver treatment accordingly.