Walker and Rabbitohs teammates Damien Cook and Cameron Murray, along with Canberra duo Jack Wighton and Nick Cotric, were selected on Sunday after their teams were eliminated from the NRL’s finals series over the weekend.
The South Sydney five-eighth was dropped after his debut in Origin I last year but Blues coach Brad Fittler recently indicated he was a fair chance of leapfrogging Roosters pivot Luke Keary in the race to replace James Maloney in the NSW No.6 jersey.
"Cody Walker - he's been awesome, absolutely awesome," Fittler said.