On April 15, the OIG posted an "Open Letter to Health Care Providers from the Inspector General" announcing refinements to the OIG Provider Self-Disclosure Protocol.  Most notably, under the new policy, providers who voluntarily disclose self-discovered evidence of potential health care fraud in good faith, fully cooperate with the OIG, and provide requested information in a timely manner generally will not be required to enter into corporate integrity or certification of compliance agreements with OIG.  The OIG also has expanded the information that must be included with the provider’s initial disclosure submission.