Section 484.1 - Basis and scope(a)Basis. This part is based on: (1) Sections 1861(o) and 1891 of the Act, which establish the conditions that an HHA must meet in order to participate in the Medicare program and which, along with the additional requirements set forth in this part, are considered necessary to ensure the health and safety of patients; and(2) Section 1861(z) of the Act, which specifies the institutional planning standards that HHAs must meet.(b)Scope. The provisions of this part serve as the basis for survey activities for the purpose of determining whether an agency meets the requirements for participation in the Medicare program.