5 CFR §890.1106

1. (a)Type of enrollment. An individual who enrolls under this subpart may elect coverage for self only, self plus one, or self and family.
   1. (1)For an enrollee who is eligible for continued coverage under § 890.1103(a) (1) or (2), a covered family member is an individual whose relationship to the enrollee meets the requirements of 5 U.S.C. 8901(5) and who meets any applicable requirements of 5 CFR 890.302 of this part.
   2. (2)For a former spouse who is eligible for continued coverage under § 890.1103(3) of this part, a covered family member is an individual who meets the requirements of § 890.804 of this part.
2. (b)Plans and options. An individual who elects to continue coverage under this subpart may enroll in a plan or option different from the plan or option covering the individual at the time of the qualifying event.