Ludvig spent the final nine games of the season as a healthy scratch.
Ludvig (illness) will serve as a healthy scratch against the Maple Leafs on Monday, Matt Vensel of the Pittsburgh Post-Gazette reports.
Ludvig (illness) will miss his fourth straight game Saturday versus Tampa Bay, per Seth Rorabaugh of Tribune-Review Sports.
Ludvig (illness) will miss Thursday's tilt versus Washington, Tom Gulitti of NHL.com reports.
Ludvig (illness) is not expected to be in the lineup for Tuesday's game versus the Devils, Matt Vensel of the Pittsburgh Post-Gazette reports.
Ludvig (illness) will be a game-time decision for Tuesday's matchup with the Devils, Penguins play-by-play announcer Josh Getzoff reports.
Ludvig (illness) will not play Monday against the Rangers.
Ludvig (upper body) will be available to return Tuesday against Winnipeg.
Ludvig (upper body) was loaned to AHL Wilkes-Barre/Scranton on Sunday for conditioning purposes.
Ludvig (upper body) is taking part in practice Friday in a regular jersey, Penguins' studio host Dan Potash reports.