Can a witness be impeached for moral turpitude?

"[U]nder People v. Wheeler (1992) 4 Cal.4th 284, 292-293 [14 Cal.Rptr.2d 418, 841 P.2d 938], the court has broad discretion to admit acts of moral turpitude to impeach a witness's credibility. '[I]mpeachment evidence other than felony convictions entails problems of proof, unfair surprise, and moral turpitude evaluation which felony convictions do not present. Hence, [under Evidence Code section 352,] courts may and should consider with particular care whether the admission of such evidence might involve undue time, confusion, or prejudice which outweighs its probative value.' [Citation.] A court also may consider issues of 'fairness, efficiency, and moral turpitude'

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