Health coverage available at reduced or no cost for people with incomes below certain levels. Examples of subsidized coverage include Medicaid and the Children’s Health Insurance Program (CHIP). Marketplace insurance plans with premium tax credits are sometimes known as subsidized coverage too. In states that have expanded Medicaid coverage, your household income must be below 138% of the federal poverty level to qualify. In all states, your household income must be between 100% and 400% of the federal poverty level to qualify for a premium tax credit that can lower your insurance costs.

References

https://www.healthcare.gov/glossary/subsidized-coverage/