La. Code Crim. Proc. art. 554
Current with operative changes from the 2024 Third Special Legislative Session
A defendant shall plead when arraigned. If he stands mute, refuses to plead, or pleads evasively, a plea of not guilty shall be entered of record. When a defendant is a corporation and fails to appear for arraignment when summoned, a plea of not guilty shall be entered of record.
La. Cr.P. § 554