Which of the following describes the 'Diagnosis Related Group (DRG)' reimbursement system?

The Diagnosis Related Group (DRG) system is a prospective payment framework used by insurers to categorize hospital costs and determine reimbursement levels. This system shifted the financial risk from the payer to the provider to encourage healthcare efficiency. By bundling services based on a clinical diagnosis, it incentivizes hospitals to provide cost-effective care. It is a cornerstone of modern healthcare administration and inpatient financial management. Rationale: A. This describes "capitation," not a DRG system. Capitation involves a per-member per-month (PMPM) payment to providers for a broad range of services. It is commonly used in Managed Care Organizations (MCOs) to manage outpatient health maintenance. DRGs, conversely, are focused on specific inpatient episodes rather than a continuous monthly fee for an enrolled population. B. This describes a "per diem" reimbursement model. In a per diem system, the hospital is paid a fixed rate for every day the patient occupies a bed, regardless of the intensity of care. DRGs do not pay by the day; they pay a lump sum based on the diagnosis. The per diem model can actually incentivize longer hospital stays, which DRGs aim to reduce. C. Diagnosis Related Groups (DRGs) provide a flat rate of reimbursement based on the patient's primary diagnosis and any complications. The payment is predetermined based on the resources required for a "typical" patient within that group. This forces hospitals to manage resources carefully, as they lose money if the cost of care exceeds the fixed DRG rate. It promotes standardized, efficient clinical pathways. D. This describes a "Fee-for-Service" (FFS) model. In FFS, every individual test, procedure, and consultation is billed and reimbursed separately. This is the opposite of the DRG approach, as it may incentivize over-utilization of services to increase revenue. DRGs were created specifically as an alternative to the traditional, unbundled fee-for-service reimbursement structures.