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AnalysisJuly 6, 2026

Colorado Ends EDI 1.0 Claims Submissions July 8 as Mandatory EDI Release 3.1 Takes Effect July 9

The Colorado Division of Workers' Compensation is cutting over all electronic claims reporting to the IAIABC's Release 3.1 XML standard this week, requiring carriers and TPAs to retire the older flat-file format.

By the Work Comp Brief automated newsroomGrounded in cdle.colorado.gov

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The Colorado Division of Workers' Compensation (DOWC) is completing a mandatory cutover in electronic claims reporting this week, according to the division's official updates page. July 8, 2026 is the final day on which carriers and third-party administrators may submit claims data under the IAIABC's legacy EDI Claims Release 1.0 standard. Beginning July 9, 2026, the Colorado Division of Workers' Compensation requires all Colorado trading partners to use EDI Claims Release 3.1 for electronic submission of First Reports of Injury (FROI) and Subsequent Reports of Injury (SROI).

Colorado's transition is a direct jump from the oldest active IAIABC EDI standard — Release 1.0 — to the association's current specification, Release 3.1. The new standard uses an XML file format, replacing the fixed-field flat-file structure of Release 1.0. The EDI Requirements document for Colorado's implementation carries a revision date of April 30, 2026 and an effective date of July 9, 2026.

One of the substantive changes under Release 3.1 involves Permanent Partial Disability body codes: the set of anatomical codes used on Final Admissions and in electronic PPD reporting expands to 82 distinct codes, enabling more granular injury-site classification than the predecessor standard permitted. The underlying PPD award calculation methodology is not changing; only the reporting taxonomy expands.

Colorado's EDI services platform is maintained for the DOWC by Verisk, which also hosts the official Colorado EDI implementation site at codowcedi.info. That site carries the Release 3.1 Requirements tables and Implementation Guide for trading partners. Technical support is available through the EDI services team at codowcedi@verisk.com.

What it means

For carriers and TPAs with a Colorado book of business, the critical question this week is whether their claims management system — and any clearinghouse or EDI vendor in the submission chain — generates compliant EDI 3.1 XML files. Submissions formatted under Release 1.0 will not be accepted by the DOWC after July 8. Claims operations and IT teams should run test transmissions against the DOWC portal before the cutover date; if a vendor is in the chain, written confirmation of Release 3.1 compatibility provides a compliance record.

For claims adjusters and litigation specialists handling Colorado permanent partial disability files, the expanded 82-code PPD body taxonomy affects Final Admission and SROI filing. Adjusters should familiarize themselves with the new code set and confirm that their claims system populates the correct Release 3.1 code. Misfiled body codes on admissions can trigger electronic rejections or manual review, creating processing delays on PPD closure.

For large self-insured employers with Colorado operations, the compliance obligation flows through their TPA or claims administrator. Self-insureds should obtain written confirmation from their service provider that EDI 3.1 testing has been completed for Colorado filings and that the new PPD body codes are mapped correctly in the provider's system. The self-insured bears the legal obligation to file correctly even when the administrative function is outsourced.

For technology vendors and software providers supporting workers' compensation claims platforms, Colorado's leap directly from Release 1.0 to 3.1 is a reminder that several other jurisdictions still running older IAIABC EDI releases are likely candidates for similar transitions. The IAIABC has signaled an intent to eventually sunset Release 1.0 support across the industry; vendors maintaining legacy-standard compatibility should treat the Colorado cutover as an operational data point for their own roadmap planning.

Primary source

https://cdle.colorado.gov/dwc/dowc-updates

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