The two concepts that matter most
- Network: “in-network” care is usually far cheaper than “out-of-network.”
- Cost sharing: deductibles, copays, coinsurance, and out-of-pocket maximums.
In many U.S. plans you may pay the first chunk (deductible), then a percentage (coinsurance), until you hit an annual cap (out-of-pocket max). That’s why a “cheap premium” can still be costly.