Title 42 › CHAPTER 7 — SOCIAL SECURITY › SUBCHAPTER XVIII — HEALTH INSURANCE FOR AGED AND DISABLED › § 1395a
People who get Medicare can choose any qualified doctor, clinic, or hospital that agrees to treat them. A doctor or other provider may make a private contract with a Medicare patient to provide and be paid for a service outside of Medicare only if the provider will not submit a Medicare claim and will not get any Medicare payments for that service. Before care, the private contract must be written and signed by the patient, must not be used in an emergency, and must clearly say the patient agrees not to seek Medicare payment, will pay for the service themselves, understands Medicare limits on charges do not apply (including the limit in section 1395w–4(g)), and that Medigap (section 1395ss) or other supplemental plans may not pay. The provider must also file a signed affidavit with the Secretary of Health and Human Services saying they will not bill Medicare for items or services covered by the contract for a 2-year period, and must send a copy to the Secretary within 10 days after the first such contract. If a provider knowingly bills Medicare during that 2-year period, the private-contract rules stop and no Medicare payments will be made for services from that date until the period ends. The affidavit renews every 2 years unless the provider tells the Secretary at least 30 days before the period ends that they do not want to continue. Starting by February 1, 2016, HHS must post yearly lists about opt-out providers (how many, specialties, locations, timing, and how many billed for emergency or urgent care). A "Medicare beneficiary" is someone entitled to Part A or enrolled in Part B; an "opt-out" provider is one with the affidavit on file.
Full Legal Text
The Public Health and Welfare, Source: USLM XML via OLRC
Legislative History
Reference
Citation
42 U.S.C. § 1395a
Title 42, The Public Health and Welfare
Last Updated
Sep 22, 2026
Release point: 119-110