Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Advisory Opinion 08-11

Regarding a proposal to waive cost-sharing obligations for protocol-required clinical services and oxygen therapy provided to Medicare beneficiaries who participate in the Long-term Oxygen Treatment Trial sponsored by the National Heart, Lung, and Blood Institute and the Centers for Medicare and Medicaid Services.

Advisory Opinion 08-11

Updates