CMS has announced a series of calls on specific Medicare program vulnerabilities identified in HHS Office of Inspector General (OIG) reports. The topics of the calls are as follows: August 23: Inpatient Rehabilitation Facility Documentation, Power Wheelchairs/Power Mobility; August 24: Overview of Reviews, Hospice, and Electronic Submission of Medical Documentation (esMD); August 25: Diagnostic Radiology Services in Emergency Departments; Ambulatory Surgical Center Services and Ambulance Transportation Provided to Beneficiaries in Skilled Nursing Facility Stays. CMS Contractor Medical Directors, OIG representatives and CMS personnel will address compliance with Medicare policy, billing instructions, and medical review guidance related to reducing improper payments for these items and services. The calls will be broadcast over the internet.