It could happen if Boston wins their last 2 games against Orlando and Washington, and Philly splits a home-and-home with Chicago and loses to Miami.
Normally I would think this is a little far-fetched, but Philly has looked pretty bad of late and I'm sure they'd rather play Indiana in the first round. Orlando has been hot going into the playoffs.
Even though Embiid got a triple-double in a loss to Milwaukee the other night, he looks exhausted and banged-up. I wouldn't be at all surprised if they sit him, and others as well, and drop 2 of 3 to finish the season.
Playoff seedings have a way of shifting at the last minute sometimes.