According to the death notice, Pilgram passed away Sunday.
Pilgram was transported to Children's Healthcare of Atlanta at Scottish Rite after the accident. He remained in critical condition a week after he was struck.
Family members reported that the boy sustained brain damage from the accident.
Funeral arrangements will be announced later. The Olin L. Gammage & Sons Funeral Home is handling the arrangements.
He had sustained injuries after a Polk County School bus struck him Sept. 9.
Counselors at CMS today
“Additional counselors are going to Cedartown Middle School today and they are working with students here,” said Buddy Harrison, director of student services for the Polk County School System.
“They are working to assist in counseling and working with the family," he said.