MedicaidBilling CodesHigh impact
Maryland Medical Assistance Program ICD-10 Implementation Policy
Maryland Medicaid·MD·Provider Transmittal
We identified it
Jun 20, 2026
Summary
Maryland's Medicaid program is implementing ICD-10 diagnosis coding to replace ICD-9 codes. All providers billing Maryland Medicaid must transition from ICD-9 to ICD-10 diagnosis codes for claim submission.
Action Required
Immediately: Billing team must update all systems to use ICD-10 diagnosis codes instead of ICD-9 codes for all Maryland Medicaid claims. Update billing software, encounter forms, and train staff on new coding requirements. Verify EMR systems are configured for ICD-10. Claims submitted with ICD-9 codes will be rejected.