(CNN) Low-income Americans who missed signing up for 2022 Affordable Care Act coverage can now enroll in plans with $0 premiums through the federal exchange's website.

Those with incomes less than 150% of the federal poverty level -- $19,320 for an individual and $39,750 for a family of four -- can select policies on healthcare.gov through a special enrollment period, the Centers for Medicare and Medicaid Services told CNN exclusively on Monday. Most people will be able to select plans with no premiums, while others may have to pay a few dollars.

The agency is launching advertising and outreach campaigns to spread the word about the new special enrollment period, which lasts for the rest of the year. The effort will also target those experiencing certain life changes, such as losing job-based coverage, getting divorced or aging out of a parent's policy, which have always allowed them to sign up for Obamacare policies during the year.

"We're doing year-round outreach on marketplace coverage to make sure that people know that it's available to them and really get the word out to new communities," CMS Administrator Chiquita Brooks-LaSure told CNN.

The Biden administration has beefed up enrollment assistance, funneling more funds to navigator programs that help people select policies. It is aiming to enroll more of the uninsured in coverage, as well as aid those who lose Medicaid coverage to maintain health insurance after the public health emergency ends

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