New York, New Jersey, Texas and Kansas had the highest prevalence of out-of-network charges for in-network inpatient admissions in 2017 for people with large employer health plans, according to a study from the Kaiser Family Foundation.
Prevalence of out-of-network charges for in-network inpatient admissions was lowest in South Dakota, Nebraska and Minnesota.
To determine the incidence of surprise medical bills, researchers examined large employer claims data from IBM’s MarketScan Research Database, representing claims and encounters for nearly 19 million people under age 65.
Several states had insufficient data, including Oregon, Idaho, Wyoming, Vermont and Louisiana.
Here is the share of in-network inpatient admissions with at least one out-of-network charge in 2017, for 40 states, among people with large employer plans. They are listed from highest to lowest.
New York: 33 percent
New Jersey: 29 percent
Texas: 27 percent
Kansas: 27 percent
Florida: 24 percent
Arizona: 23 percent
Nevada: 19 percent
Oklahoma: 18 percent
California: 18 percent
Georgia: 16 percent
Colorado: 15 percent
New Mexico: 14 percent
Maryland: 14 percent
Tennessee: 13 percent
Michigan: 13 percent
Virginia: 13 percent
Alabama: 11 percent
Pennsylvania: 11 percent
Arkansas: 10 percent
Missouri: 10 percent
New Hampshire: 9 percent
Illinois: 9 percent
West Virginia: 9 percent
Connecticut: 9 percent
Massachusetts: 8 percent
Ohio: 8 percent
North Carolina: 8 percent
Utah: 8 percent
Rhode Island: 8 percent
Washington: 7 percent
Montana: 7 percent
Wisconsin: 7 percent
Indiana: 7 percent
Kentucky: 7 percent
Mississippi: 6 percent
Maine: 5 percent
Iowa: 4 percent
South Dakota: 2 percent
Nebraska: 2 percent
Minnesota: 2 percent
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