Title 18 › PART III — PRISONS AND PRISONERS › CHAPTER 313 — OFFENDERS WITH MENTAL DISEASE OR DEFECT › § 4242
If a defendant tells the court before trial under Rule 12.2 that they will use an insanity defense, and the prosecutor asks, the judge must order a psychiatric or psychological exam and must have a written report filed under section 4247(b) and (c). When insanity is raised by that notice, by a lawyer’s motion, or by the judge, the jury must be told to decide one of three outcomes: guilty, not guilty, or not guilty only by reason of insanity. If there is no jury, the judge must make one of those three findings.
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Crimes and Criminal Procedure, Source: USLM XML via OLRC
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Citation
18 U.S.C. § 4242
Title 18, Crimes and Criminal Procedure
Last Updated
Sep 22, 2026
Release point: 119-110