What type of measures are included under the Utilization domain of HEDIS?

The correct choice highlights measures that specifically assess the use of healthcare services, such as emergency department visits and hospital readmissions. This falls under the Utilization domain of HEDIS, which aims to evaluate how well healthcare resources are being utilized among patients. By analyzing these metrics, healthcare organizations can identify patterns in health service use that may indicate areas for improvement, such as reducing unnecessary emergency visits or hospital readmissions, thereby enhancing the overall quality of care.

In contrast, the other measures do not align with the specific focus of the Utilization domain. For example, measures that evaluate health plan membership pertain more to enrollment statistics than to service usage. Similarly, those focused on patient satisfaction assess the experiences and perceptions of patients rather than actual utilization of services. Lastly, measures assessing chronic disease management typically look at the quality of care provided to patients with chronic conditions, rather than the frequency or necessity of healthcare services utilized. Thus, option C stands out as the correct alignment with the Utilization domain.