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 Medical Assistance Program (Medicaid) has implemented ICD-10 coding requirements, transitioning from ICD-9. All claims must now use ICD-10 diagnosis codes for proper processing and reimbursement.
Action Required
Immediately: Billing team must update all systems to use ICD-10 diagnosis codes instead of ICD-9 for Maryland Medicaid claims. Update billing software, encounter forms, and EMR templates to ensure all diagnosis coding uses ICD-10 format. Train staff on ICD-10 code selection and documentation requirements. Claims submitted with ICD-9 codes will be rejected.