Claim Submission Method for Claims with Attachments

All claims with attachments should be sent via the Provider Web Portal. Providers submitting less than five (5) claims per month may submit a request form; otherwise, all providers should be billing electronically, even with attachments. The Department recognizes that providers have encountered issues with the Web Portal and is giving providers a grace period to submit paper claims, even if they do not submit less than five (5) per month.

Source: https://www.colorado.gov/pacific/sites/default/files/Bulletin_0917_B1700403.pdf