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

The U.S. Department of Health & Human Services released a final rule that includes the new ICD-10 compliance date of 10/1/2015. This final rule implements section 212 of the Protecting Access to Medicare Act of 2014 by changing the compliance date for the International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) and Procedure Coding System (ICD-10-PCS) from 10/1/2014 to 10/1/2015. 

It also requires the continued use of the International Classification of Diseases, 9th Revision, Clinical Modification, Volumes 1 and 2 (diagnoses), and 3 (procedures) (ICD-9-CM) through September 30, 2015. The final rule was published in the Federal Register on August 4, 2014 and is available here. 

Please prepare your systems now for the conversion. If your organization is interested in testing with Ohio Medicaid, please contact our ICD-10 testing team at: MITS_CGTESTING@medicaid.ohio.gov.  

Please continue to visit this page for updates related to ICD-10 implementation in Ohio.

ICD-9 vs. ICD-10

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, 2015 and inpatient hospital with date of discharge on or after October 1, 2015 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.

Code Change Graph: ICD9 versus 1CD10
Remediation and Testing

Ohio Medicaid continues to work toward the implementation of ICD-10.  Remediation of impacts to policies and processes is in progress.  Systems remediation is nearing completion and the project is moving into the testing phase.  Ohio Medicaid continues to be 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 to ICD-10 on October 1, 2015.

Since the Protecting Access to Medicare Act of 2014 was signed into law, the ICD-10 core team has been re-evaluating Ohio Medicaid’s ICD-10 implementation plan.  Although the ICD-10 code set will not be accepted prior to October 1, 2015, Ohio Medicaid is moving forward with implementation work, which includes EDI testing.

Starting in August 2014, all active trading partners will be provided a window of time to test claims containing ICD-9 and ICD-10 code sets. End-to-end testing in Ohio Medicaid’s CERT region will begin August 1, 2014; testing in this environment will be used to verify that inbound and outbound transactions have been processed correctly.  Additional testing will be available for entities not ready in August. If your organization is interested in testing with Ohio Medicaid, please contact our ICD-10 testing team at MITS_CGTESTING@medicaid.ohio.gov.  

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