Interactive tool · CMS data

Claim denial rate explorer

Search any state to see its marketplace claim-denial rate and how it compares to the national average, measured from CMS Transparency-in-Coverage filings.

32%
highest (Alaska)
20%
national average
8%
lowest (South Dakota)

According to the U.S. Centers for Medicare & Medicaid Services Transparency in Coverage Public Use File (plan year 2026), PlainInsurer compares marketplace claim-denial rates across more than 1,000,000 submitted claims in the 30 states with federal marketplace filings, data as of August 2026. See our methodology for the full computation.

Every reporting state, at a glance

Marketplace claim-denial rate by state. Search above to compare any one against the national average.

% of marketplace claims denied, by state, CMS Transparency in Coverage (PY2026)
AK
ME
VT
NH
WA
ID
MT
ND
MN
IL
WI
MI
NY
MA
OR
UT
WY
SD
IA
IN
OH
PA
NJ
CT
RI
CA
NV
CO
NE
MO
KY
WV
VA
MD
DE
AZ
NM
KS
AR
TN
NC
SC
DC
OK
LA
MS
AL
GA
HI
TX
FL
Scale: 8–13 13–18 18–22 22–27 27–32
View all 30 states as a list
  1. Alaska: 32
  2. Hawaii: 27
  3. West Virginia: 23
  4. Arizona: 23
  5. Tennessee: 23
  6. Florida: 23
  7. Iowa: 22
  8. Indiana: 22
  9. Alabama: 22
  10. Ohio: 22
  11. Nebraska: 22
  12. North Carolina: 21
  13. Kansas: 21
  14. Delaware: 20
  15. Texas: 20
  16. Louisiana: 20
  17. Utah: 20
  18. Oklahoma: 20
  19. Mississippi: 19
  20. Michigan: 19
  21. Missouri: 18
  22. South Carolina: 18
  23. Wyoming: 18
  24. Arkansas: 16
  25. Wisconsin: 15
  26. Oregon: 13
  27. Montana: 13
  28. North Dakota: 11
  29. New Hampshire: 11
  30. South Dakota: 8

All 30 reporting states ranked by claim-denial rate

# State Claim denial rate ClaimsIssuers
1 Alaska 32.0% 1.02M2
2 Hawaii 27.0% 0.74M2
3 West Virginia 23.3% 3.34M2
4 Arizona 23.2% 8.79M6
5 Tennessee 22.8% 25.92M5
6 Florida 22.7% 86.03M11
7 Iowa 22.4% 5.20M3
8 Indiana 22.3% 7.73M3
9 Alabama 22.1% 20.51M3
10 Ohio 22.0% 18.68M10
11 Nebraska 21.8% 2.03M3
12 North Carolina 20.5% 25.82M7
13 Kansas 20.5% 7.00M6
14 Delaware 20.4% 2.30M3
15 Texas 20.1% 136.35M14
16 Louisiana 20.1% 11.01M5
17 Utah 19.7% 9.86M6
18 Oklahoma 19.6% 13.27M7
19 Mississippi 19.4% 15.96M4
20 Michigan 18.8% 15.46M7
21 Missouri 18.3% 13.63M8
22 South Carolina 18.1% 23.11M5
23 Wyoming 18.0% 1.33M1
24 Arkansas 15.6% 18.80M6
25 Wisconsin 15.4% 10.55M12
26 Oregon 13.4% 2.67M6
27 Montana 12.8% 2.15M3
28 North Dakota 11.4% 1.46M3
29 New Hampshire 11.3% 3.15M3
30 South Dakota 7.9% 1.77M3

Denial rates are the share of submitted marketplace claims denied in each state, from the CMS Transparency in Coverage Public Use File (PY2026). States that run their own health-insurance marketplace are not in the federal file. Methodology →