49.4251-3—Applicability of sections 4251 to 4254, inclusive.
Except as otherwise provided in this section, the applicability of sections 4251 to 4254, inclusive, as amended and in effect on January 1, 1959, and the regulations in this subpart extends only to amounts paid on or after January 1, 1959, for services rendered on or after such date. In the case of amounts paid pursuant to bills rendered on or after January 1, 1959, for services for which no previous bill was rendered, the sections of law and regulations referred to in the preceding sentence are applicable in respect of that portion of the amount paid pursuant to such bill or bills as is attributable to services rendered subsequent to October 31, 1958. For regulations applicable with respect to amounts paid for services rendered prior to November 1, 1958, and amounts paid for services rendered after October 31, 1958, for which a bill was rendered prior to January 1, 1959, see Part 42 of this chapter. See also §§ 49.0-3 and 49.0-4, relating to the scope of the regulations and the extent to which prior regulations are superseded.