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.



Kansas

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 (%)
Kansas 2015 76,695 179,954 43
Kansas 2016 81,746 172,009 48
Kansas 2017 80,780 141,980 57
Kansas 2018 79,836 118,601 67
Kansas 2019 77,084 107,829 71
Kansas 2020 75,969 103,273 74
Kansas 2021 86,008 110,975 78
Kansas 2022 98,650 115,307 86

  • 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.