The DRG Expert has been a trusted and comprehensive reference to the DRG classification system for more than 25 years. Organized by major diagnostic category (MDC), the convenient and innovative book layout follows the logical MS-DRG decision process. This is a must-have reference for those who need to verify DRG information and accurately assign MS-DRGs concurrently or retrospectively based on ICD-10-CM methodology, which goes into effect October 1, 2018.