Depending on the plan, your costs may include:
Premium: A fixed, monthly amount you pay for your Medicare plan coverage.
Copay: A flat dollar amount (for example, $20) you pay each time you receive care or fill a prescription.
Coinsurance: A percentage (for example, 20%) you pay for your care or drugs after you meet your deductible.
Deductible: The amount you pay for medical costs before the plan begins to pay its share of your medical costs. Some plans have a separate drug deductible before they start to pay for your prescriptions.