Which statement correctly describes the role of DRGs in IPPS?

• A. DRGs categorize outpatient services to set payments.
• B. DRGs are codes used for physician services under Part B.
• C. DRGs are groupings that determine hospital payment for inpatient stays under IPPS.
• D. DRGs are a method for pricing durable medical equipment.

Answer: (C)

DRGs (diagnosis-related groups) classify inpatient hospital stays into groups that are expected to use similar levels of hospital resources. Under the Inpatient Prospective Payment System, payment for an inpatient stay is determined by the DRG assignment, with a fixed payment amount for that group (adjusted for factors like severity, teaching status, and location). This means the hospital’s reimbursement is tied to the DRG category rather than the exact costs of the stay. Outpatient services are paid under a separate system using ambulatory payment classifications, physician services under Part B use the Physician Fee Schedule, and durable medical equipment has its own pricing methods.