WASHINGTON (AP) — Medicare premiums are going up $5 a month in 2013, the government said Friday. It's less than expected, but still enough to eat up about one-fourth of a typical retiree's cost-of-living raise next year.

Medicare chief Marilyn Tavenner said the new "Part B" premium for outpatient care will be $104.90 a month. In most cases, it's deducted directly from a beneficiary's monthly Social Security check. Currently the premium is $99.90 a month.

Earlier this year, the government projected an increase of as much as $9 for 2013, but health care inflation has remained modest.