"Individual Treatment Plan (ITP)" or "Treatment Plan" as defined in 59 Ill. Adm. Code 132 (Medicaid Community Mental Health Services) means a written document developed by the appropriate service provider staff with the participation of the client with a mental illness and, if applicable, the client's guardian, which specifies the client's diagnosis, problems, and service needs to be addressed, the intermediate objectives and long-term goals for the services and the planned interventions for achieving these goals. (R 315)