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Medicaid claims reimbursement information for organizations on behalf of Ohio Medicaid providers.
Trading Partners

trading partner readiness for February 1 launch. doctor shaking hands

Important: Update on 277CA transactions for fee-for-service claims submitted to ODM

Ohio Department of Medicaid is currently addressing an issue with 277CA transactions where some claims are not reporting on the 277CAs sent to some Trading Partners. This is a reporting issue and will not impact your payment. The missing claims will be included on the 277CAs and will be sent via standard Electronic Data Interchange (EDI) communication channels by Thursday, February 23, 2023. 

New Resources Available: 271 Code Crosswalk and 271 Acronym Reference Guide

The 271 Code Crosswalk and 271 Acronym Reference Guide are now available for providers and ODM Trading Partners! The 271 Code Crosswalk can be used to help Trading Partners and providers cross reference the 271 eligibility codes with their definitions (e.g. 1019 = CHIP2 QMB) while the 271 Acronym Reference Guide can be used to define acronyms used for the 271 (e.g. MCAID = Medicaid). Acronym Reference Guide can be used to define acronyms used for the 271 (e.g. MCAID = Medicaid).

Trading Partner readiness for Electronic Data Interchange claims beginning February 1

On February 1, the new Electronic Data Interchange (EDI) vendor will go-live with responsibility for all EDI HIPAA X12 transactions. This does not include claims submitted through the individual managed care portals or claims submitted to MITS via the Provider Network Management (PNM) module. This includes nursing facilities, ICF-IIDs, and medical services billed by pharmacies that bill through a Trading Partner (TP).


This information can change daily as TPs work through their preparations. Updates to the spreadsheet will be posted on this page by the end of the day Tuesday and Friday.

Using available information, TPs have been grouped into categories based on their activity and engagement with claims testing, including fee-for-service and managed care claims. It is important that all TPs have completed system configuration and testing by February 1 to ensure provider claims are processed properly with the cutover to the new claims system. Greater TP engagement and testing reduces the risk of delays in claims submission and payment for providers. Based on the level of engagement of TPs, they are grouped into the following categories, using the “shorthand” titles:

  • Active: TPs are part of the Ohio Medicaid pilot TP group or have connected and are testing in CERT environment.
  • Onboarded: TPs have responded but have not tested in the CERT environment.
  • Tepid: TPs have responded but need to complete setup and test.
  • AWOL: TPs have not responded to outreach. Please note TPs who notified Ohio Medicaid that they are no longer active have been removed from these lists. 

The spreadsheet can be downloaded and sorted. Trading Partners are identified by name and ID number.

NOTE: If your TP is not listed as active, please reach out to them directly regarding their readiness. Testing is not required but highly encouraged. For other questions you can email OMESEDIsupport@medicaid.ohio.gov.

Thank you.

Updated: Trading Partner enrollment activity

As of July 1, 2021, Ohio Department of Medicaid (ODM) suspended new Trading Partner enrollment activity. Trading Partner enrollment is expected to resume in Spring 2023. This announcement will be updated when the date is set.  Thank you for your patience during this delay. For further questions about Trading Partner enrollment please contact ODM’s Integrated Helpdesk (IHD) at 800-686-1516. 

For more information related to OMES changes impacting the Trading Partner community click on the Ohio Medicaid Enterprise System tile below. 

This information is intended to assist organizations who facilitate electronic Medicaid claims reimbursement on behalf of Ohio Medicaid providers.

NOTICE: The standing maintenance schedule for EDI transaction processing is every Sunday from 1-5 a.m. ET / EST. On the second Sunday of each month the maintenance window is expanded from midnight to 7 a.m. ET / EST when needed.
OXI also has a standing maintenance window on Tuesday evenings from 7-11 p.m. ET / EST that could prevent submission of EDI transactions.

ODM will notify all Trading Partner contacts by email if unplanned or emergency maintenance occurs.

Latest news for ODM Trading Partners

Contact Information

ODM EDI Support
Email:  OMESEDIsupport@medicaid.ohio.gov
Phone: 800-686-1516 Option 4  7 A.M.-7 P.M. Monday-Friday; 8 A.M.-5 P.M. Saturday and Sunday; Monday, February 20  8 A.M.-5 P.M.