The act of the accused amounts to culpable homicide not amounting to murder if it falls under

(1) any one of the Clauses of Section 299 (2) any one of the Clauses of Section 299 but does not fall under any one of the four Clauses of Section 300 (3) any one of the exceptions to Section 300

Section 300 specifies certain situations when the murder is considered as culpable homicide not amounting to murder. These are - If the offender does an act that causes death because of grave and sudden provocation by the other. If the offender causes death while exceeding the right to private defense in good faith. If the offender is a public servant and does an act that he, in good faith, believes to be lawful. If the act happens in a sudden fight in the heat of passion. If the deceased is above 18 and the death is caused by his own consent.