Four episodes of the cop drama, which stars Jason Clarke, Jennifer Beals and Delroy Lindo, have currently aired on Fox.
Ryan told Collider: "I try to think far ahead. I don't ever want to get too bogged down into notions that are too specific... because too many things change along the way, but... I really have been thinking a lot about what some elements of season two would look like."
The showrunner added that he is hesitant to make detailed plans until the show receives an official renewal.
"I'm already thinking a lot on it... and I've got some ideas I really like," he said. "[But] you don't want to spend too much time doing that until you have a good indication that there's going to be a season two."
Ryan admitted that he had devised one idea for a potential new episode after reading an article in a Chicago newspaper.
"[It was] about the tradition of 'dibs' in Chicago... which has to do with people placing objects and furniture in the streets to save parking spots after snowstorms," he explained. "I started thinking about how that might be the basis of an episode."
He continued: "These ideas come all the time, and I have the luxury now to think about them."
The Chicago Code continues on Mondays at 9/8c on Fox.