Part 3. Incest

(1) Any person who knowingly marries, inflicts sexual penetration or sexual intrusion on, or subjects to sexual contact, as defined in section 18-3-401, an ancestor or descendant, including a natural child, child by adoption, or stepchild twenty-one years of age or older, a brother or sister of the whole or half blood, or an uncle, aunt, nephew, or niece of the whole blood commits incest, which is a class 4 felony. For the purpose of this section only, “descendant” includes a child by adoption and a stepchild, but only if the person is not legally married to the child by adoption or the stepchild.
(2) When a person is convicted of, pleads nolo contendere to, or receives a deferred sentence for a violation of the provisions of this section and the victim is a child who is under eighteen years of age and the court knows the person is a current or former employee of a school district or a charter school in this state or holds a license or authorization pursuant to the provisions of article 60.5 of title 22, C.R.S., the court shall report such fact to the department of education.

(1) A person commits aggravated incest when he or she knowingly:
(a) Marries his or her natural child or inflicts sexual penetration or sexual intrusion on or subjects to sexual contact, as defined in section 18-3-401, his or her natural child, stepchild, or child by adoption, but this paragraph (a) shall not apply when the person is legally married to the stepchild or child by adoption. For the purpose of this paragraph (a) only, “child” means a person under twenty-one years of age.
(b) Marries, inflicts sexual penetration or sexual intrusion on, or subjects to sexual contact, as defined in section 18-3-401, a descendant, a brother or sister of the whole or half blood, or an uncle, aunt, nephew, or niece of the whole blood who is under ten years of age.
(2) Aggravated incest is a class 3 felony.
(3) When a person is convicted, pleads nolo contendere, or receives a deferred sentence for a violation of the provisions of this section and the court knows the person is a current or former employee of a school district in this state or holds a license or authorization pursuant to the provisions of article 60.5 of title 22, C.R.S., the court shall report such fact to the department of education.

(1) The court may suspend a portion of the sentence of any person who is convicted of a violation committed prior to November 1, 1998, of any offense listed in this part 3 who is not a habitual sex offender against children, as described in section 18-3-412, if the offender receives a presentence evaluation that recommends a treatment program and the offender satisfactorily completes the recommended treatment program.
(2) In addition to any other penalty provided by law, the court may sentence a defendant who is convicted of a first offense pursuant to this part 3, committed prior to November 1, 1998, to a period of probation for purposes of treatment that, when added to any time served, does not exceed the maximum sentence imposable for the offense.
(3) The court shall sentence a defendant who is convicted of any offense specified in this part 3 committed on or after November 1, 1998, pursuant to the provisions of part 10 of article 1.3 of this title.