The Medicaid agency must implement a statewide surveillance and utilization control program that—
(a)
Safeguards against unnecessary or inappropriate use of Medicaid services and against excess payments;
(b)
Assesses the quality of those services;
(c)
Provides for the control of the utilization of all services provided under the plan in accordance with subpart B of this part; and
(d)
Provides for the control of the utilization of inpatient services in accordance with subparts C through I of this part.