48 CFR §1601.102

1. (a)The FEHBAR is issued by the Director of the Office of Personnel Management in accordance with the authority of 5 U.S.C. chapter 89 and other applicable law and regulation.
2. (b)The FEHBAR does not replace or incorporate regulations found at 5 CFR part 890, which provides the substantive policy guidance for administration of the FEHBP under 5 U.S.C. Chapter 89. The following is the order of precedence in interpreting a contract provision under the FEHBP:
   1. (1)5 U.S.C. Chapter 89;
   2. (2)5 CFR part 890;
   3. (3)48 CFR Chapters 1 and 16;
   4. (4)The FEHBP contract.