MedicaidBilling CodesHigh impact
Maryland Medical Assistance Program ICD-10 Implementation Policy
Maryland Medicaid·MD·Provider Transmittal
We identified it
Jun 20, 2026
Summary
The Maryland Medical Assistance Program (Medicaid) is implementing ICD-10 diagnosis coding requirements, transitioning from ICD-9. All providers must begin using ICD-10 codes for diagnosis coding on claims and documentation.
Action Required
Immediately: Update billing software and EMR systems to use ICD-10 diagnosis codes instead of ICD-9 for all Maryland Medicaid claims. Train billing staff on ICD-10 code lookup and selection. Update encounter forms and clinical documentation templates to reflect ICD-10 coding requirements. Claims submitted with ICD-9 codes will be rejected.