On May 18^th2013 HHS gave state Medicaid Fraud Control Units (State Attorney General MFCUs) more power to data mine for patterns of overpayments, waste, fraud or abuse. They expect these new resources to have an almost 7 to 1  return on investment to the United States government.  Providers should expect to see more approved data mining and trend analysis investigations in Medicaid.

http://oig.hhs.gov/fraud/medicaid-fraud-control-units-mfcu/regulations_statutes/fr-2013-11735.pdf