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Page Header Graphic: ICD-10, International Classification of Diseases, Tenth Revision

Attention Providers: ICD-10 Delay Message

International Classification of Disease (ICD) codes are used in virtually every healthcare setting, including inpatient and outpatient hospital settings and physician offices as well as in professional, medical services.  As the 10th edition, ICD-10 will replace the current ICD-9 code set.  All HIPAA covered entities are required to comply with the new code set regulations. 

Claims for all health care services on or after October 1, 2014 and inpatient hospital with date of discharge on or after October 1, 2014 must use ICD-10 diagnosis & inpatient procedure codes.

ICD-10 offers a number of benefits to Ohio Medicaid, some of which include:  

  • Enhanced code specificity,
  • Improved ability to measure the quality of health care services.
  • Enhanced accuracy of data analytics and reporting.
  • Improved processes to identify fraud and abuse.
  • Improved ability to identify populations and members for targeted outreach and case management. 
ICD-9 vs. ICD-10
Code Change Graph: ICD9 versus 1CD10
Impact and Implementation

Ohio Medicaid continues to work toward implementation of ICD-10 by the compliance date of October 1, 2014.  We are actively engaged with sister state agencies, managed care plans trading partners, and many provider associations to ensure all of Ohio Medicaid will be ready for the transition.

The ICD-10 team completed the impact assessment by documenting all impacts to our policies, processes and systems, and is in the process of finalizing technical design solutions.  We anticipate testing of systems changes will begin later this winter and will continue through the spring and summer of 2014.

As part of our testing plan, plan to test with certain providers, who will be contacted by our testing team in the months ahead.  Our policy department has identified and is updating all policies (OAC) and processes to the appropriate ICD-10 terminology and/or codes.

Check back here often for the latest information on the Ohio Medicaid ICD-10 project.

If you have questions, please email us at icd10questions@medicaid.ohio.gov.


For additional information to help you prepare for the transition from ICD-9 to ICD-10, CMS has developed several implementation handbooks. Each guide provides detailed information for planning and executing the transition. To view the guides, please visit: http://www.cms.gov/Medicare/Coding/ICD10/ProviderResources.html.

Visit Ohio Medicaid's ICD-10 Resources web page for additional information.