Alert! No Extension to December 15 Open Enrollment Deadline Plan selection deadline for Jan 1 coverage start date is fast approaching. Must enroll&make plan selection by 11:59pm Dec 15, 2015 for coverage to be effective on Jan 1, 2016. There will be no extensions to this deadline. Plans selected between Dec 16 and Jan 15 will have a Feb 1 coverage start date. Don’t have a gap in coverage. Renewals completed between 16th of Dec and 15th of Jan will have a Feb 1 coverage start date and those completed from 16th thru 31st of Jan will have a March 1 coverage start date.