Health care managers would conduct internal audits consistent with the OIG (Office of Inspector General) annual Work Plan in order to accomplish which of the following?
a. Help prevent future audits that might result in the facility being required to return payments
b. Analyze the facility's case mix in order to aggressively maximize payment from insurers
c. Deliver more accurate research forecasts, evidence-based treatment protocols, and improved patient outcomes
d. Measure both the quality and efficiency of a health care delivery