42 C.F.R. § 424.505 Basic enrollment requirement.
Title 42 - Public Health
To receive payment for covered Medicare items or services from either Medicare (in the case of an assigned claim) or a Medicare beneficiary (in the case of an unassigned claim), a provider or supplier must be enrolled in the Medicare program. Once enrolled, the provider or supplier receives billing privileges and is issued a valid billing number effective for the date a claim was submitted for an item that was furnished or a service that was rendered. (See 45 CFR Part 162 for information on the National Provider Identifier and its use as the Medicare billing number.)
Title 42: Public Health
PART 424—CONDITIONS FOR MEDICARE PAYMENT
Subpart P—Requirements for Establishing and Maintaining Medicare Billing Privileges
§ 424.505 Basic enrollment requirement.
