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 has implemented ICD-10 coding requirements, transitioning from ICD-9 diagnostic codes. All claims submitted to Maryland Medical Assistance Program must now use ICD-10 diagnosis codes instead of the previous ICD-9 system.
Action Required
Immediately: Billing team must update all billing systems and software to use ICD-10 diagnosis codes for all Maryland Medicaid claims. Replace all ICD-9 codes with appropriate ICD-10 equivalents. Update encounter forms and EMR templates to reflect ICD-10 coding requirements. Train staff on ICD-10 code selection and documentation. Claims submitted with ICD-9 codes will be rejected.