5 C.F.R. § 890.602 Opportunity to change enrollment.
Title 5 - Administrative Personnel
An annuitant eligible to enroll under §890.601 may elect to enroll on and after August 8, 1978. [43 FR 35018, Aug. 8, 1978, as amended at 62 FR 38440, July 18, 1997]
Title 5: Administrative Personnel
PART 890—FEDERAL EMPLOYEES HEALTH BENEFITS PROGRAM
Subpart F—Transfers From Retired Federal Employees Health Benefits Program
§ 890.602 Opportunity to change enrollment.