Medicare Glossary: Simple Definitions & Terms

The highest amount a non-participating provider who does not accept assignment is allowed to charge for a Medicare-covered service — capped at 15% above the Medicare-approved amount.

A doctor or supplier who does not accept Medicare assignment but is still enrolled in Medicare. They may charge up to 15% more than the Medicare-approved amount (the limiting charge). Medicare will still pay its share, but you may pay more.