Medicare Managed Care Manual (Pub. 100-16), Ch. 17f § 120.4
Availability
120.4 - Availability
(Rev. 77, Issued: 10-28-05, Effective Date: 10-28-05)
Generally, a Medicare cost plan is obligated to provide all Medicare covered services,
even if Medicare certified facilities are not available in the geographic area. For example,
if Fee-For-Service beneficiaries commonly seek services in another town outside the
geographic area then the Medicare cost plan must provide these services to its enrollees
in a similar manner.