Medicare Advantage Enrollment Deadline Looms

Millions of Medicare Advantage customers are fast approaching a deadline for a task they'd rather avoid: Researching and then settling on coverage plans for 2015.

The annual enrollment window for the privately run versions of the government's Medicare program for the elderly and disabled people closes on Sunday. This is the main opportunity most customers have each year to adjust their health coverage, and it may be worth paying extra attention to the details.

Insurers frequently tweak their coverage plans from year to year, but brokers and other industry insiders say they're seeing more changes over the past few years.

About 4 percent of Medicare Advantage enrollees, roughly 480,000 people, will have to find new coverage for 2015 because their current plan won't exist, according the nonprofit Kaiser Family Foundation.