The defenceman hasn’t played since March 19 due to an illness, and he then took a leave of absence from the team for personal reasons.
In 33 regular-season games — shortened by injuries — the Swede had one goal and 17 points.
The Lightning begin their first-round series with the Canadiens on Sunday (5:45 p.m. ET / 2:45 p.m. PT on Sportsnet and Sportsnet+).