C.R.S. § 26-13.5-119

(1) At any time after effecting service of process pursuant to section 26-13.5-104 , the delegate child support enforcement unit may refer the case to court by requesting a court hearing for the establishment or modification of child support without additional service of process when: (a) The APA-respondent is incarcerated and does not participate in a negotiation conference or sign a stipulated order; (b) An alleged or presumed parent is excluded by genetic testing results pursuant to section 13-25-126 ; (c) A parent receives an adoption subsidy for a dependent child; or (d) Any other reason set forth in rule. (2) An APA-respondent may opt out of the APA proceedings and a court hearing must be scheduled pursuant to this section if, prior to the date and time of the currently scheduled negotiation conference, the APA-respondent delivers to the delegate child support enforcement unit a written request for a court hearing.