"I think he's scheduled for surgery Thursday," Scioscia said. "I think he's over the shock of it. I think he's disappointed but has come to grips with understanding the process, the surgery.
"He's got to listen to the doctors. It's going to take time. Right now he's anxious to get the surgery and rehab aspect [started]. He's obviously disappointed."
Morales suffered the fracture landing on home plate in the celebration following his game-winning grand slam against Seattle on May 29 at Angel Stadium.
The initial diagnosis was that he could be back before the end of the season, but Scioscia said that's all up in the air.
"I'm sure after the surgery we'll get word from Dr. [Lewis] Yocum, whoever is in there, on the extent of what they had to do and the prognosis," Scioscia said. Yocum is the team orthopedist.
The Angels, using three first basemen to replace Morales, are 8-1 since his injury, moving to the top of the American League West with six consecutive wins in Kansas City, Seattle and Oakland.
Starting all 51 of the team's games at first base, Morales was the Angels' leader in homers (11) and RBIs (39) while batting .290 with a .487 slugging percentage.
Taking over at first base in 2009 after Mark Teixeira signed a free-agent deal with the Yankees, Morales erupted, finishing fifth in the American League Most Valuable Player balloting. The native of Cuba batted .306 with 34 homers and 108 RBIs with a .569 slugging percentage.
In his absence, the Angels have been going with catcher Mike Napoli, versatile veteran Robb Quinlan and corner outfielder Michael Ryan at first base.
Lyle Spencer is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.