| Modifier | Description |
|---|---|
| MA | Ordering professional is not required to consult a clinical decision support mechanism due to service being rendered to a patient with a suspected or confirmed emergency medical condition. |
| MB | Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of insufficient internet access. |
| MC | Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of electronic health record or clinical decision support mechanism vendor issues. |
| MD | Ordering professional is not required to consult a clinical decision support mechanism due to the significant hardship exception of extreme and uncontrollable circumstances. |
| ME | The order for this service adheres to the appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional. |
| MF | The order for this service does not adhere to the appropriate use criteria in the qualified clinical decision support mechanism consulted by the ordering professional. |
| MG | The order for this service does not have appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional. |
| MH | Unknown if ordering professional consulted a clinical decision support mechanism for this service, related information was not provided to the furnishing professional or provider. |
| Ordering professional consulted a qualified clinical decision support mechanism for this service, and the related data was provided to the furnishing professional. |