ACFE Global Fraud Conference andyweeks assessing your anti-fraud program audit engagement scope Auditing Controls versus Transactions audit skills Case Study charles laugen cia cms-hcc risk adjustment model coding compliance compliance challenging issues conflicts of interest corporate integrity agreements corporate investigations cybersecurity Dave Fairburn enterprise erm/grc strategy erm grc hcca hcca scottsdale healthcare hhs oig summary reports insurance investigation guidelines investigations iro james rose jim rough Leah Lane Lorraine Aniello Martin Biegelman Medical Coding Team Medical Practice Acquisition Nancy Roht office of inspector general oig risk adjustment sam cunningham Scott Moritz siu when boards fail in their oversight role workplans