Joseph registered eight points in the Penguins' last 18 games of the season.
Joseph scored a goal on his lone shot in Thursday's 4-1 win over the Capitals.
Joseph recorded an assist in Monday's 5-2 upset of the Rangers.
Joseph logged a pair of assists in Thursday's 6-3 victory over the Sharks.
Joseph (illness) participated in the morning skate Tuesday, but he isn't expected to be in the lineup against Washington, per Michelle Crechiolo of the Penguins' official site.
Joseph (illness) won't play Sunday against the Islanders.
Joseph (illness) won't play Saturday versus the Blues, Seth Rorabaugh of Tribune-Review Sports reports.
Joseph (lower body) will be in the lineup versus the Coyotes on Tuesday, Penguins play-by-play announcer Josh Getzoff reports.
Joseph (lower body) was recalled from his conditioning loan with AHL Wilkes-Barre/Scranton on Sunday.
Joseph (lower body) was reassigned to AHL Wilkes-Barre/Scranton on Tuesday for a conditioning stint.