Michigan Compiled Laws, Chapters 760 to 777 Code of Criminal Procedure § 777.55

(a) Except as provided in subdivision (b), count a prior misdemeanor conviction or prior misdemeanor juvenile adjudication only if it is an offense against a person or property, a controlled substance offense, or a weapon offense. Do not count a prior conviction used to enhance the sentencing offense to a felony.

(b) Count all prior misdemeanor convictions and prior misdemeanor juvenile adjudications for operating or attempting to operate a vehicle, vessel, ORV, snowmobile, aircraft, or locomotive while under the influence of or impaired by alcohol, a controlled substance, or a combination of alcohol and a controlled substance. Do not count a prior conviction used to enhance the sentencing offense to a felony.

(a) “Prior misdemeanor conviction” means a conviction for a misdemeanor under a law of this state, a political subdivision of this state, another state, a political subdivision of another state, or the United States if the conviction was entered before the sentencing offense was committed.

(b) “Prior misdemeanor juvenile adjudication” means a juvenile adjudication for conduct that if committed by an adult would be a misdemeanor under a law of this state, a political subdivision of this state, another state, a political subdivision of another state, or the United States if the order of disposition was entered before the sentencing offense was committed.