Michigan CDL Michigan Medical Self-Certification and Electronic MEC Status

Michigan CDL holders certify to one of four federal driving types: non-excepted interstate, excepted interstate, non-excepted intrastate, or excepted intrastate. Interstate versus intrastate and excepted versus non-excepted are separate decisions. When any operation is non-excepted interstate, that category controls.

Beginning June 14, 2025, MDOS checks the National Registry of Certified Medical Examiners for non-excepted interstate applicants. Medical Examiner's Certificates for that workflow are accepted electronically from the National Registry, so carrying a paper card does not prove the state record is current.

A driver self-certifies when applying, renewing, upgrading the CDL group, adding an endorsement, or transferring an out-of-state CDL, and updates the state when the driving type changes. Non-excepted interstate operation requires an active MEC on file. Changing from interstate to Michigan-only operation may require a corrected credential with K.

An FMCSA waiver or Skills Performance Evaluation is separate from the MEC. Michigan requires an office visit for variance documents; they are not accepted through the ordinary online medical update. The V restriction records that commercial operation remains subject to the variance.

Required medical status must remain current. A missing or expired certification can remove commercial authority or cause a downgrade, and a later examination restores authority only after the electronic result and any required credential transaction are complete. Verify the official record before returning to work.

Apply the rule to the exact Michigan vehicle, credential, age, applicant, cargo, passenger use, commerce category, date, test stage, and operating facts. Current Michigan Department of State pages control time-sensitive procedures; the current official manual controls tested safety content unless a newer official notice expressly changes it.