5 CFR §890.1609

1. (a)A 31-day temporary extension of coverage and right of conversion under subpart D of this part is available from the health benefits plan under 5 U.S.C. chapter 89 in which the enrollee or covered family member was most recently enrolled or covered.
2. (b)If an individual was enrolled in or covered by a PSHB plan until becoming eligible for temporary continuation of coverage under subpart K of this part, the individual may elect coverage under subpart K by a PSHB plan offered under this subpart.