Implementation Information

Please note: The DOWC EDI Claims R3.1 Mandate Date changed from July 30, 2026, to July 9, 2026.

Master Sender ID

Please click on the following link for information on the Master Sender ID.

Colorado Master Sender ID for EDI Claims (rev 08292024).pdf

Implementation Schedule

Please click on the following link for the CO DOWC transition from IAIABC Claims Release 1 to IAIABC Claims Release 3.1 Timeline Summary.

CO DOWC - Verisk Transition Timelines R1.0 to R3.1.pdf (Revised 11/24/2025)

Testing Requirements and Test Feedback Request List

Please click on the following link for the CO DOWC IAIABC Claims Release 3.1 Test Plan.

CO DOWC Claims Release 3.1 Test Plan Requirements.pdf (Revised 11/25/2025)

Please click on the following link for the CO DOWC Claims Release 3.1 Test Feedback Request List

CO DOWC Claims Release 3.1 Test Feedback Request List.xlsx (Revised 12/02/2025)