Slafkovsky had three assists, including one on the power play, in a 7-5 victory against Buffalo on Monday.
Slafkovsky (head) practiced Monday after leaving Saturday's 3-1 loss to Pittsburgh early, Patrick Friolet of RDS reports.
Slafkovsky was removed from Saturday's game late in the third period after taking a shot to the head, Erik Leijon of the Montreal Gazette reports.
Slafkovsky (upper body) will return to the lineup Tuesday versus Seattle, per Kenzie Lalonde of TSN.
Slafkovsky (shoulder) will be re-evaluated in a week, the Canadiens announced Tuesday.
Head coach Martin St. Louis said Monday that Slafkovsky's (shoulder) status for Tuesday's game against the Rangers is uncertain, Eric Engels of Sportsnet reports.
Slafkovsky notched two assists, one on the power play, in Saturday's 4-3 shootout loss to the Islanders.
Slafkovsky (shoulder) took line rushes in his normal first-line spot and is expected to play versus the Islanders on Saturday, Guillaume Lefrancois of La Presse reports.
Slafkovsky (shoulder) will travel with the Canadiens to New York to face the Islanders on Saturday, but coach Martin St. Louis did not know if he would be able to play, Eric Engels of Sportsnet reports.
Slafkovsky left practice Friday after injuring his left shoulder, according to Patrick Friolet of RDS.ca.