Government and rebel representatives reported the latest deaths in locations across the Donetsk and Luhansk regions.
Ukraine's army also said five soldiers had died fighting pro-Russian rebels near the strategic town of Debaltseve.
Civilian casualties have risen sharply in recent weeks amid a rebel offensive.
The latest deaths were in the city of Donetsk, Debaltseve and several villages under government control in the Luhansk region. The exact numbers could not be independently confirmed.