411.6—Services furnished by a Federal provider of services or other Federal agency.
(a) Basic rule.
Except as provided in paragraph (b) of this section, Medicare does not pay for services furnished by a Federal provider of services or other Federal agency.
(2)
For services furnished by a participating Federal provider which CMS has determined is providing services to the public generally as a community institution or agency;
(4)
For services furnished under arrangements (as defined in § 409.3 of this chapter) made by a participating hospital.