Lewis was charged with child abandonment in Clayton County, Ga., on Tuesday and briefly jailed, according to The Atlanta Journal-Constitution.
"My arrest ... was the result of a misunderstanding rather than the result of me being an unfit father," Lewis said in a statement, according to the Carroll County Times.
"I am a responsible parent and have always provided for my children. That fact cannot be disputed. I have made mistakes in my life, but failing to care for my children is not one of them. I'm confident this matter will be resolved as the legal process plays out, and I will continue to work toward an arrangement within the court system that will allow me to effectively co-parent my son."
Lewis, 32, played nine seasons in the NFL, six with the Ravens and three with the Browns. He rushed for 2,066 yards in 2003 with the Ravens, which is the second most rushing yards recorded in a season.