CMS Fundamentals Practice Exam

DRGs are a classification system used in Medicare to group inpatient stays by similar clinical characteristics and expected resource use, so payments can be standardized. In the Inpatient Prospective Payment System (IPPS), each DRG has a fixed payment rate, and hospitals are paid that set amount for an admission based on the DRG category, rather than charging for each individual service. This setup aims to standardize payments across hospitals while providing incentives for efficiency, with adjustments for factors such as case mix, teaching status, and geographic location. The term refers specifically to a Diagnosis-Related Group, which is used to determine how much hospitals get paid for inpatient stays. Other terms like a diagnosis-related code, a drug reimbursement group, or a dynamic reimbursement grid do not reflect Medicare’s payment methodology.