A: Claims must be submitted to Medicare within one calendar year of the date of service.  The limited exceptions to this “timely filing requirement” are shown below.

• Retroactive Medicare entitlement for those qualifying because of disability
• Delayed disenrollment from a Medicare Advantage plan
• Delays caused by an error made by Medicare

If a claim is submitted more than one calendar year after the date of service and is not covered by one of these exceptions, it will be denied and will not be subject to appeal.