1. A person commits murder in the second degree when the person commits murder which is not murder in the first degree. 2. Murder in the second degree is a class “B” felony. However, notwithstanding section 902.9, subsection 1 , paragraph “b” , the maximum sentence for a person convicted under this section shall be a period of confinement of not more than fifty years. 3. For purposes of determining whether a person should register as a sex offender pursuant to the provisions of chapter 692A , the fact finder shall make a determination as provided in section 692A.126 . [C51, §2570; R60, §4193; C73, §3850; C97, §4729; C24, 27, 31, 35, 39, § 12912; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, §690.3; C79, 81, §707.3 ; 82 Acts, ch 1239, §1 ] 2009 Acts, ch 119, §49 ; 2013 Acts, ch 30, §200 Referred to in §331.802 , 671A.2 , 692A.101 , 692A.102 , 692A.126 , 703.3 , 726.26 , 902.12 , 910.3A Intentional or reckless dependent adult abuse resulting in death, § 726.26 Definition of forcible felony, §702.11 Sentencing options excluded, see §907.3