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.
Indiana
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 (%) |
|---|---|---|---|---|
| Indiana | 2015 | 152,739 | 269,488 | 57 |
| Indiana | 2016 | 151,852 | 234,058 | 65 |
| Indiana | 2017 | 138,607 | 189,054 | 73 |
| Indiana | 2018 | 133,245 | 150,576 | 88 |
| Indiana | 2019 | 126,299 | 140,013 | 90 |
| Indiana | 2020 | 124,149 | 135,645 | 92 |
| Indiana | 2021 | 124,924 | 134,792 | 93 |
| Indiana | 2022 | 144,468 | 153,411 | 94 |
- 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.