CAMBODIA – PENAL CODE
BOOK ONE - GENERAL PROVISIONS
TITLE 2 - CRIMINAL RESPONSIBILITY
CHAPTER 2 - EXCLUSION OF OR DIMINISHED CRIMINAL RESPONSIBILITY
Article 31: Absence of criminal responsibility by reason of mental disorder
A person who, at the time he or she committed an offence, was suffering from a mental disorder which destroyed his or her capacity to reason, shall not be criminally responsible.
A person who, at the time he or she committed an offence, was suffering from a mental disorder which diminished his or her capacity to reason, shall still be criminally responsible. However, the court shall take this into account when it decides the penalty.
A person who, at the time he or she committed an offence, was suffering from a mental disorder resulting from the consumption of alcohol, drugs, or prohibited substances, shall still be criminally responsible.
Incapacity - national proceedings
Insanity - national proceedings
Mental disease or defect - national proceedings
EDIT.