C.R.S. § 18-6-303

(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.