The bombing, which struck near a checkpoint in the Kadhimiyah area, home to a major Shia shrine, also wounded at least 29 people, the officials said.
Allies finalise plans to defeat Islamic State group
IS issued a statement claiming the attack, saying it targeted soldiers and pro-government paramilitaries in the area.
The militant group frequently carries out attacks on security forces, and also often targets members of Iraq's Shia Muslim majority, whom it considers heretics.
An IS suicide bomber struck shoppers in Baghdad's central Karrada district earlier this month, killing 292 people.
The group also claimed an attack on a Shia shrine in Balad, north of the capital, that left 40 dead a few days later.
IS overran large areas north and west of Baghdad in 2014, but Iraqi forces have since regained significant ground and are conducting operations to set the stage for the battle to recapture Mosul, the last IS-held city in the country.
Jeddah suicide bomber was Pakistani: Saudi interior ministry
The militants have responded to the battlefield setbacks by striking civilians, and experts have warned there may be more such attacks as the extremists continue to lose ground.
A suicide bomber struck near a checkpoint in a Shia area of northern Baghdad on Sunday, killing at least 12 people, Iraqi security and medical officials said.
The blast also wounded at least 22 people, the officials said.
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