The diagnostic code you entered is not valid. For the purpose of billing, MOHLTC only accepts ICD-8 codes.
Enter the correct diagnostic code and resubmit.
You can enable “Enable Diagnostic Code suggestions” under MY PREFERENCES to help you choose the correct code. For more information, refer to the following article: https://support.mdbilling.ca/hc/en-us/articles/207619646-OHIP-Billing-Tip-33-Searching-Diagnostic-Codes