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Health Insurance Glossary

Definitions for common health insurance terms

supplemental insurance

DEFINITION: Supplemental insurance refers to an insurance policy that supplements your primary health insurance coverage. Supplemental insurance includes a variety of policies that can be offered by employers or purchased on their own, including:

Original Medicare enrollees have access to Medicare Supplemental Insurance, otherwise known as Medigap coverage. Medigap plans pay some or all of the out-of-pocket costs for treatment that’s covered under Original Medicare, including coinsurance and deductibles.