Why are DRGs used in inpatient payment systems?

• A. To calculate facility-level overhead.
• B. To determine physician bonuses.
• C. To measure patient satisfaction.
• D. To standardize payments for clinically similar diagnoses and resources, enabling predictable, activity-based payment and efficiency incentives.

Answer: (D)

DRGs group inpatient stays into categories that reflect similar clinical needs and resource use, and hospitals are paid a fixed amount for each stay within a DRG. This standardization turns inpatient payments into a predictable, activity-based system: the payment is tied to the typical cost of treating a certain diagnosis or set of procedures, not to every individual service delivered. By using a fixed rate for each DRG (with adjustments for case mix and other factors), hospitals are incentivized to deliver care efficiently, avoiding unnecessary tests or extended stays while still meeting patient needs. That focus on standardization and efficiency is what makes DRGs the chosen method for inpatient payment. They aren’t about calculating facility overhead, awarding physician bonuses, or measuring patient satisfaction.