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ICD-10 Implementation and Conversion Delay
Illinois Medicaid - HFS·Provider Notice
We identified it
Jun 20, 2026
Summary
The federal implementation of ICD-10 coding conversion from ICD-9 has been delayed from the original October 1, 2014 date. Healthcare providers should continue using ICD-9 codes until further notice and will be informed when a new implementation date is announced.
Action Required
Immediately: Continue using ICD-9 diagnostic codes for all claims until further notice. Billing team should postpone any planned ICD-10 system updates and staff training originally scheduled for October 1, 2014. Monitor CMS website and provider notices for announcement of new ICD-10 implementation date.