Rivero was removed from Tuesday's game against the Astros with an apparent left hand injury, Rhett Bollinger of MLB.com reports.
Rivero suffered the injury after fouling off a pitch in the fifth inning of Tuesday's contest and wasn't able to finish his at-bat. The severity of his injury remains unknown, but if he needs to go on the IL, the Angels will need to promote another catcher from the minors to provide depth behind Logan O'Hoppe.