§ 411.170 General provisions.

(a) Basis. (1) This subpart is based on certain provisions of section 1862(b) of the Act, which impose specific requirements and limitations with respect to—

(i) Individuals who are entitled to Medicare on the basis of age; and

(ii) GHPs of at least one employer of 20 or more employees that cover those individuals.

(2) Under these provisions, the following rules apply:

(i) An employer is considered to employ 20 or more employees if the employer has 20 or more employees for each working day in each of 20 or more calendar weeks in the current calendar year or the preceding calendar year.