Health spending expenditures for commercial plans are predominantly concentrated among a small population of high-intensity consumers across settings of care.

Rising health care spending has sparked new efforts to constrain health care expenditures. To explore how health care spending is distributed across consumers and how utilization patterns compare across health care resource expenditures (eg, hospital, outpatient care). Using the IQVIA PharMetrics Plus database, we conducted a retrospective claims analysis for the 2018 plan year to examine commercial health care spending and utilization across 5 settings of care: ambulatory services, inpatient services, office visits, pharmacy services, and additional services. Consistent with findings from previous analyses of total health spending, total health care spending for a large commercially insured population was largely concentrated within a small population of high-intensity consumers. These patterns persist when looking at individual segments of spending, including spending on prescription drugs and inpatient and ambulatory services. Inpatient spending was the most concentrated, with 97% of spending occurring within the top tenth percentile of patients. Our findings suggest that health care spending for commercial plans is predominantly concentrated within a small population of high-intensity consumers across all settings of care. Curbing rising health care spending will require systemwide evaluation of the value of spending within and across settings of care for a subset of high-resource-use patients. This is particularly important for health care settings with the highest concentration of spending, including inpatient care. This study was funded by the National Pharmaceutical Council (NPC). Ciarametaro, Buelt, and Dubois are employed by the NPC. Kleinrock and Campbell are employed by IQVIA, which was contracted by the NPC for data analysis.