About ACGs

The John Hopkins Adjusted Clinical Groups (ACG) Case-Mix System offers a unique approach to measuring morbidity that improves accuracy and fairness in evaluating provider performance, forecasting healthcare utilization and setting equitable payment rates. The ACG System:

• Measures the morbidity burden of patient populations based on disease patterns, age and gender. It relies on the diagnostic code information found in professional and hospital insurance claims or other computerized records. This provides the user with a more accurate representation of how people present to the healthcare system - as a constellation of morbidities, not as individual diseases.
• Creates a common language for healthcare analysis that benefits providers, purchasers and consumers of healthcare. The system has broad applicability within the government and private sectors of most healthcare delivery systems. In the United States and around the globe, public agencies and private organizations use ACGs for many risk-adjustment applications.

Click on the links at the left to learn more about the many facets of the ACG Case-Mix System. The pages in this section will give you an overview and more information about the components, applications, underlying methodology, unique features, and history of the System.

Learn more about the ACG Rx Predictive Model.