5 C.F.R. § 890.601 Coverage.
Title 5 - Administrative Personnel
An annuitant (a retired employee or survivor under part 891 of this chapter) who is enrolled, or is eligible to enroll, under the Retired Federal Employees Health Benefits Program (part 891 of this chapter) is eligible to enroll under the Federal Employees Health Benefits Program under this part. [39 FR 20055, June 6, 1974]
Title 5: Administrative Personnel
PART 890—FEDERAL EMPLOYEES HEALTH BENEFITS PROGRAM
Subpart F—Transfers From Retired Federal Employees Health Benefits Program
§ 890.601 Coverage.