Health Insurance in Missouri

Medicaid expansion: the ballot initiative

Missouri's path to Medicaid expansion was unusual. In August 2020, voters approved Amendment 2 by a 53-47 margin, amending the state constitution to require Medicaid expansion. The state legislature initially refused to fund it, and the governor tried to block implementation. But the Missouri Supreme Court ruled in July 2021 that the constitutional amendment was binding. The Family Support Division began processing expansion applications on October 1, 2021.

By mid-2024, nearly 300,000 Missourians were enrolled in expansion Medicaid. The program covers adults under 65 with household income up to 138% FPL (about $21,600 for a single person). This closed the coverage gap that had left low-income childless adults without any affordable option.

However, Missouri's Medicaid expansion faces a funding challenge. The enhanced federal matching rate that incentivized expansion (90% federal, 10% state) could be reduced under potential federal budget changes, which would put pressure on the state's share of costs.

What plans cost in 2026

Missouri was among the hardest-hit states for 2026 premium increases. The weighted average rate increase was 23.1% before subsidies, with individual carriers varying widely. Cox Health Plans in southwest Missouri approved the steepest increase at about 30%. Blue Cross Blue Shield of Kansas City actually lowered rates by about 4%, one of the few carriers in the country to cut prices.

For the two carriers with the broadest statewide reach, average monthly premiums land around $755: UnitedHealthcare (up about 15%) and Ambetter from Home State Health (up about 25%). For someone without subsidies, these are significant increases.

The subsidy cliff returned in 2026 after enhanced credits expired. Enrollees above 400% FPL lost all premium assistance. Combined with the rate increases, this caused a drop of about 51,000 enrollees from 2025 to 2026. Many switched to cheaper Bronze plans or dropped marketplace coverage entirely.

Major carriers in Missouri (2026)

Eight insurers offer plans on the Missouri marketplace for 2026, down from nine after Aetna exited at the end of 2025. Only two carriers have close to statewide coverage:

• UnitedHealthcare is the only carrier available in all 115 counties. It provides a broad network and is the default option in many rural areas where no other carrier operates.
• Ambetter from Home State Health (Centene) is available in 109 of 115 counties, missing only a handful of northeast Missouri counties. Often has the lowest premiums but uses narrower networks.
• Anthem Blue Cross Blue Shield covers portions of the state, primarily in the eastern half including the St. Louis metro.
• Blue Cross Blue Shield of Kansas City operates in 30 western Missouri counties around the Kansas City metro. Notable for cutting rates by about 4% for 2026, one of the few carriers nationally to lower premiums.
• Oscar Health offers plans in select Missouri markets, focusing on a technology-driven experience with virtual care and an app-based model.
• Medica covers parts of the state with competitive pricing in its service areas.
• Cox Health Plans serves five counties in southwest Missouri around Springfield, tied to the CoxHealth hospital system. Approved a 30% rate increase for 2026.
• SSM Health Insurance Company operates in parts of the state connected to the SSM Health hospital system.

Key regions

St. Louis metro

The St. Louis area (St. Louis City, St. Louis County, St. Charles, Jefferson, Franklin counties) has the most carrier competition in the state. Anthem, UnitedHealthcare, Ambetter, and SSM Health all offer plans. The region is anchored by major health systems including BJC HealthCare, SSM Health, and Mercy. Multiple carriers competing generally keeps premiums more competitive than outstate Missouri.

Kansas City metro

The Missouri side of Kansas City (Jackson, Clay, Platte counties) is served by Blue Cross Blue Shield of Kansas City, UnitedHealthcare, and Ambetter. BCBS KC's rate cut for 2026 is good news for this market. The HCA Midwest and Saint Luke's hospital systems form the backbone of local carrier networks.

Springfield

Southwest Missouri has Cox Health Plans as a local option alongside UnitedHealthcare and Ambetter. CoxHealth is the dominant hospital system in the region, so Cox Health Plans offers tight integration between insurance and care. But the 30% rate increase for 2026 makes it worth comparing against the other options.

Rural Missouri

Many rural counties have only UnitedHealthcare and Ambetter as options, and in a few northeast counties, UnitedHealthcare is the sole carrier. Premiums in rural areas tend to be higher because of limited provider competition and higher per-patient costs. If you live in a rural county, check your network carefully, as narrow networks may not include nearby providers.

Estimate your subsidy

Resources for Missourians

• HealthCare.gov for plan shopping and enrollment (Missouri uses the federal marketplace)
• Missouri DSS for Medicaid (MO HealthNet) applications and information about expansion eligibility
• Missouri Department of Commerce and Insurance for rate filing information and consumer assistance
• Call 2-1-1 for help finding local enrollment assisters and navigators