CCRP 561 - Change of plea of "not guilty" to "not guilty and not guilty by reason of insanity"
Art. 561. Change of plea of "not guilty" to "not guilty and not guilty by reason of insanity"
The defendant may withdraw a plea of "not guilty" and enter a plea of "not guilty and not guilty by reason of insanity," within ten days after arraignment. Thereafter, the court may, for good cause shown, allow such a change of plea at any time before the commencement of the trial.