Which type of expense is generally not covered by Medicare?

Routine physical exams are typically not covered by Medicare because Medicare primarily focuses on necessary medical services related to the diagnosis and treatment of illness rather than preventive care. While Medicare does provide some coverage for certain preventive services, routine physical exams specifically are not included in the standard coverage.

On the other hand, emergency medical services, hospital stays, and inpatient mental health treatments are essential services that Medicare covers under specific conditions. Medicare Part A covers inpatient hospital stays, while Part B might cover emergency care and certain mental health services. Therefore, routine physical exams stand out as the type of expense that falls outside of standard Medicare reimbursement policies, highlighting the program's emphasis on treatment over preventive care for specific examinations.