The scope of practice of registered, certified, and licensed agency affiliated counselors consists exclusively of the following:
(1) Counseling as defined under RCW 18.19.020;
(2) A certified agency affiliated counselor may conduct mental health assessments and make mental health diagnoses which shall be reviewed by a clinical supervisor who is a mental health professional able to independently provide mental health assessments and diagnoses according to the scope of practice of the mental health professional's credential. A certified agency affiliated counselor may not provide clinical supervision; and
(3) A licensed agency affiliated counselor may independently conduct mental health assessments and make mental health diagnoses.