Embiid has already missed the first two games of the playoffs.
76ers's center Joel Embiid is listed as doubtful for Game 3 of the playoffs, the team announced.
Embiid has already missed the first two games of the playoffs against the Heat while he recovers from a left orbital fracture he suffered on March 28 in a collision with teammate Markelle Fultz.
He was cleared from concussion protocol on Sunday after suffering a concussion during the collision.
The 76ers rode a 17-game winning streak heading into Game 2 before the Heat beat them 113-103.
Game 3 will be played in Miami on Thursday at 7 p.m. ET.