Steve Kerr is ineligible to coach in the All-Star Game since he was the Western Conference head coach last season.
NBA rules prevent the same coach from serving in consecutive years.
But the Golden State Warriors have the best record in the West and have been led by Luke Walton on an interim basis.
League spokesman Tim Frank says it's "premature" to address whether Walton could serve in the role if Steve Kerr hasn't returned from back surgery.
Frank says: "At this point, it is unclear when coach Kerr will return to the sidelines. We are more than two months away from All-Star, so it feels premature to address that situation."