When a person has been convicted of a felony and a sentence of imprisonment imposed, the court imposing the sentence shall fix a definite term of imprisonment, which shall be not longer than the terms authorized in section 18-1.3-401; except that, for persons convicted on or after November 1, 1998, of a sex offense, as defined in section 18-1.3-1003(5), the court shall impose an indeterminate sentence as provided in part 10 of this article.
C.R.S. § 18-1.3-408
This section is similar to former § 16-11-304 as it existed prior to 2002.