The OIG utilizes automation as well as other techniques to detect and identify program violations and possible fraud, waste, abuse, and overpayments. These automated detection systems are mandated by state and federal statutes. One automated system is additionally required to utilize neural network and learning technologies. These systems detect patterns of inappropriate billing from which an overpayment is identified immediately without the need for additional investigation. They also detect anomalous billing and service patterns, which then require investigation for evidence of program violations.