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What Is a “Serious Impairment of Body Function” in a Michigan Motorcycle Accident?

Author: Jason Waechter | Date: January 20, 2026 | Category: Insurance, Motorcycle Accident Injuries, Motorcycle Laws, Uncategorized

What Is a “Serious Impairment of Body Function” in a Michigan Motorcycle Accident?

After a motorcycle accident in Michigan, many injured riders assume that if another driver was at fault, they automatically have the right to recover compensation for pain and suffering.

That is not always true.

Under Michigan law, an injured motorcyclist must prove a “serious impairment of body function” before recovering non-economic damages such as pain and suffering.

If you were seriously injured in a motorcycle crash anywhere in Michigan and have questions about your rights, call 248-355-4701 for a free consultation. We represent injured riders statewide.

The Legal Standard Under Michigan Law

The serious impairment requirement is defined in MCL 500.3135.

In McCormick v. Carrier, 487 Mich 180 (2010), the Michigan Supreme Court clarified how this statute must be interpreted. The Court established a three-part test requiring proof of:

  • An objectively manifested impairment
  • Of an important body function
  • That affects the person’s general ability to lead his or her normal life

This standard applies to motorcycle accidents involving motor vehicles in Michigan.

What Does “Objectively Manifested” Mean?

An objectively manifested impairment must be supported by objective medical evidence of an actual physical impairment. The law requires proof of a medically identifiable condition — not merely subjective complaints without clinical support.

Examples may include:

  • Fractures visible on X-ray
  • Ligament or tendon tears confirmed by MRI
  • Traumatic brain injury supported by diagnostic testing
  • Spinal disc herniations with neurological findings
  • Documented loss of range of motion supported by medical evaluation

The focus is on whether there is reliable medical evidence demonstrating a real impairment of bodily function.

What Is an “Important Body Function”?

An important body function is one that has value and significance in a person’s life. It does not have to be essential to survival. It must simply matter in a meaningful way.

Important body functions commonly implicated in motorcycle crashes include:

  • Walking and mobility
  • Use of hands or arms
  • Cognitive functioning and memory
  • Vision
  • Speech
  • The ability to work

What Does It Mean to Affect the “General Ability to Lead a Normal Life”?

The Michigan Supreme Court made clear in McCormick that an injury does not have to destroy a person’s entire lifestyle to meet the threshold.

The question is whether the impairment affects the person’s general ability to live their normal life — not whether it completely eliminates all activities. The statute does not require a specific percentage of life impact.

Courts compare the injured person’s life before and after the crash. Relevant considerations may include:

  • Changes in employment capacity
  • Limitations in daily routines
  • Restrictions on recreational activities
  • Ongoing medical treatment requirements
  • The duration of the impairment

The impairment does not need to be permanent. Even injuries requiring months of surgery, rehabilitation, and restricted activity may qualify if they meaningfully alter normal life during that period.

Is Serious Impairment a Question for the Judge or the Jury?

In many cases, serious impairment is a question for the jury.

When reasonable minds could differ about whether the threshold is met, juries decide the issue. Judges may decide the question as a matter of law only when there is no genuine factual dispute.

Insurance companies frequently file early motions seeking summary disposition, arguing that an injury does not meet the statutory threshold. Clear medical evidence and documented life impact are critical when these challenges arise.

What About Pre-Existing Conditions?

Insurance carriers often argue that an injured rider’s condition existed before the crash. Michigan law recognizes that the aggravation of a pre-existing condition may qualify as a serious impairment if the collision measurably worsened the condition.

The key issue is whether the motor vehicle accident caused a distinct, objectively verifiable impairment that affects normal life — not whether the person had prior medical history.

Common Motorcycle Injuries That May Meet the Threshold

  • Fractures requiring surgical fixation
  • Pelvic fractures
  • Spinal injuries with neurological involvement
  • Traumatic brain injuries
  • Severe shoulder injuries or rotator cuff tears
  • Amputations

Each case must be evaluated individually based on objective medical findings and documented functional impact.

Why Documentation of Life Impact Matters

Beyond medical imaging, evidence of how the injury affects daily life is often critical. Employment records, testimony from family members, documented activity limitations, and consistent treatment records may help demonstrate how normal life has been altered.

Gaps in treatment or inconsistent reporting may be used by insurers to argue that injuries are not serious or not related to the crash.

Serious Impairment and Fault Are Separate Legal Questions

Even if another driver is clearly negligent, an injured motorcyclist must still prove the serious impairment threshold to recover non-economic damages.

Fault determines responsibility. Serious impairment determines whether pain and suffering compensation is legally available.

Real-World Example

A motorcyclist suffers a surgically repaired leg fracture in a collision. Before the crash, he worked full-time and participated in recreational riding and physical activities. After surgery, he requires months of rehabilitation and cannot return to work during recovery. Imaging confirms the fracture and surgical hardware placement.

Objective medical evidence combined with documented disruption of work and daily life may satisfy Michigan’s serious impairment standard.

If you suffered a serious injury in a Michigan motorcycle accident and are unsure whether you meet the legal threshold, call 248-355-4701 for a free consultation. We represent injured riders throughout Michigan.

Frequently Asked Questions

Do I automatically qualify for pain and suffering if I was hurt?

No. You must prove a serious impairment of body function under Michigan law before recovering non-economic damages.

Does the injury have to be permanent?

No. Permanency is not required. The impairment must affect your general ability to lead your normal life, even if the impact is for an extended but finite period.

Who ultimately decides whether my injury meets the threshold?

If disputed, the issue may be decided by a judge or jury based on medical evidence and testimony.

We represent motorcycle accident victims across Michigan. Call 248-355-4701 for a free consultation. You pay nothing unless we win.

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