Concentration in Health Insurance Markets

This interactive chart provides details on 1) enrollment in the overall individual market and the individual exchanges as measured by covered life-years, and 2) covered life-years in each state's individual exchange as a proportion of covered life-years in the overall individual market from 2015 through 2022.



Virginia

Source: GAO analysis of data from the Centers for Medicare & Medicaid Services (CMS). | GAO-25-107194


The table below displays data for the selected state. Click here to download the data used in this graphic.



State Year Covered life-years, individual exchange Covered life-years, individual market Individual exchange covered life-years as a proportion of overall individual market (%)
Virginia 2015 297,937 516,956 58
Virginia 2016 341,344 502,894 68
Virginia 2017 335,812 466,874 72
Virginia 2018 315,977 378,060 84
Virginia 2019 245,937 296,020 83
Virginia 2020 230,765 277,650 83
Virginia 2021 250,188 295,053 85
Virginia 2022 286,953 329,402 87

  • We calculated the size of each market from 2015 through 2022 using covered life-years that issuers reported to Centers for Medicare & Medicaid Services or states. This measure is calculated as the average number of lives insured each month in the reporting year. Rather than a point-in-time measurement, this measure accounts for changes in enrollment that occur throughout the year.
  • Covered life-years is one of several ways to measure health insurance enrollment, so it may differ from other measures of market size.
  • We rounded market share values of less than 0.5 percent to zero.