Siegenthaler was held off the scoresheet for the 12th straight game in Tuesday's 2-1 overtime loss to the Maple Leafs.
Siegenthaler (concussion) will play Tuesday versus the Penguins, Amanda Stein of the Devils' official site reports.
Siegenthaler is expected to miss time with a concussion. Head coach Travis Green told reporters Wednesday, "He'll be out for an extended period of time," per Amanda Stein of the Devils' official site.
Siegenthaler (upper body) was injured in Monday's 3-1 loss to the Rangers late in the second period, Dan Rosen of NHL.com reports.
Siegenthaler (foot) will be an option versus Washington on Tuesday. Coach Lindy Ruff told reporters, "Available to play, we'll look at getting him back in tomorrow (vs. Washington)," Amanda Stein of the Devils' official site reports.
Siegenthaler (foot) was placed on injured reserve Tuesday.
Siegenthaler scored a goal on a season-high four shots in Thursday's 6-3 loss to the Oilers.
Siegenthaler notched one shot, three blocked shots and one hit in Thursday's 4-3 overtime win over the Flyers.
Siegenthaler had two shots on goal in Thursday's 5-3 win over the Wild.
Siegenthaler scored a goal on two shots in Tuesday's 6-2 win over the Sabres.