Summary
This regulation (42 CFR § 411) defines the conditions under which Medicare excludes or denies payment for specific services. It lists numerous categories of non-covered items, including services from federal providers, services outside the U.S., war-related injuries, routine physical checkups, cosmetic surgery, most dental services, hearing aids, custodial care, personal comfort items, and services rendered by relatives or household members. The regulation also contains multiple exceptions for medically necessary or preventive services, as well as special payment rules for entities like Skilled Nursing Facilities (SNFs) and situations involving incarcerated individuals.
Reason
These exclusionary rules are fundamental to maintaining any finite insurance or entitlement program. They define the scope of coverage, prevent duplicative payments for services already covered by other sources, avoid covering non-medically necessary or experimental treatments, and contain costs against fraud and abuse (e.g., payments to relatives). Removing these boundaries would transform Medicare from a program with defined benefits into an effectively unlimited entitlement, guaranteeing explosive cost growth, program insolvency, and ultimately higher taxes or reduced benefits for all Americans. The distinctions—medical necessity vs. convenience, treatment vs. maintenance, domestic vs. foreign providers—are rational and necessary for fiscal sustainability.