WASHINGTON (AP) — With just days left to enroll, fewer people are signing up for the Affordable Care Act , even though premiums are stable, more plans are available and millions of uninsured people can still get financial help.

Barring an enrollment surge, the nation's uninsured rate could edge up again after a yearslong coverage expansion that has seen about 20 million people obtain health insurance.

A status report Wednesday from the Centers for Medicare and Medicaid Services showed nearly 20 percent fewer new people signed up than at about the same time last year. New sign-ups drive the gro...