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.

An annuitant eligible to enroll under § 890.601 may elect to enroll on and after August 8, 1978.

The effective date of an enrollment under § 890.602 is the first day of the first pay period after the election is received by the retirement system, but not earlier than January 1, 1979.

Benefits may not be limited for persons who, on the effective date of an enrollment under § 890.602, are confined in a hospital or institution.