What is the purpose of risk adjustment in Medicare payment models and how do HCCs relate?

• A. To standardize provider salaries across markets.
• B. To account for patient illness severity in payments; HCCs are used to adjust risk scores and payments, especially in MA and risk-based models.
• C. To determine hospital geographic adjustments used for reimbursements.
• D. To measure patient satisfaction for payment adjustments.

Answer: (B)

Risk adjustment in Medicare payment models is about adjusting payments to reflect how much care a patient is likely to need based on illness severity. Hierarchical Condition Categories (HCCs) translate a patient’s diagnoses into a set of risk groups, each with a weight. When those weights are summed—often along with demographic factors like age and sex—they form a risk score for the enrollee. In Medicare Advantage and other risk-based payment arrangements, payments to plans are tied to these risk scores, so plans that enroll sicker patients receive higher payments to cover the anticipated costs of their care. This makes payments fair across different patient mixes and helps prevent plans from favoring healthier individuals. HCCs are the mechanism that turns medical diagnoses into the numerical risk score that drives these payments.