An estimated 27% of adults under age 65, or 53.8 million, had a preexisting health condition in 2018, according to a study released by the Kaiser Family Foundation. State estimates range from 22% in Colorado to 37% in West Virginia, based on 2018 data from the National Health Interview Survey.
The study can be obtained at https://www.kff.org/health-reform/issue-brief/pre-existing-condition-prevalence-for-individuals-and-families/?utm_campaign=KFF-2019-Health-Reform&utm_source=hs_email&utm_medium=email&utm_content=2&_hsenc=p2ANqtz-_WXUXBNGEfmzYezTz9s3OXrJwZIuaZver07OJKagAYpQn_OR2E2MVPuVDPAwicDqGDNCM2qeBnVKZF4bc9vQn6DsRNaw&_hsmi=2.