Michigan Penal Code Section 750.520 et seq.

Sexual Assault (generally): Sexual assault is any form of unwanted sexual contact obtained without consent and/or obtained through the use of force, threat of force, intimidation, or coercion.

1st degree (felony): A sexual act involving penetration (broadly defined) and any of the following:

• Victim is under 13 years old;
• Victim is 13-15 years old + is a blood affiliation to the defendant, lives in the defendant's household, or the defendant is in an authority position to the victim;
• Multiple actors are involved and force/coercion was used to accomplish the sexual penetration or the victim is incapacitated (physically helpless, mentally incapacitated or mentally defective)
  weapon involved;
• Personal injury + force/coercion;
• Personal injury + victim incapacitated (Unable to consent to due age, mental challenged or due to intoxication, date rape drug, etc); or
• Defendant is in the process of committing another felony.

2nd degree (felony): Sexual contact (No penetration) with the genital area, groin, inner thigh, buttock or breast, AND any of the circumstances listed for 1st Degree CSC.

3rd degree Sexual Penetration and any of the following:

• Victim is 13-15 years old;
• Force or coercion; or
• Victim is incapacitated (unable to consent to due age, mental challenges, intoxication, date rape drug, etc.).

4th degree (misdemeanor): Sexual Contact and any of the following:

• Force or Coercion
• Victim incapacity (unable to consent to due age, mental challenges, intoxication, date rape drug, etc.).
• Defendant works for the Department of Corrections and the victim is an inmate.

1st degree (felony): Life imprisonment and lifetime mandatory sex offender registration.

2nd degree (felony): Up to fifteen years prison time combined with mandatory sex offender registration.

3rd degree (felony): Up to fifteen years in prison, mandatory sex offender registration.

4th degree (misdemeanor): Up to two years in prison and a fine of up to $500.

Includes vaginal, anal or oral intercourse or putting a finger or other object into another person’s anal or genital opening.

Intentional touching of the victim’s or actor’s intimate parts or the clothing covering those intimate parts for the purpose of sexual arousal or gratification, done for a sexual purpose or in a sexual manner, or done in a sexual manner for revenge or to inflict humiliation or out of anger.