Bodily Injury, Significant Bodily Injury and Serious Bodily Injury in New Jersey

Reviewed by William A. Proetta, Esq. · Updated October 2026

New Jersey uses three levels of injury in its assault law, all defined in N.J.S.A. 2C:11-1: “bodily injury” is physical pain, illness or any impairment of physical condition; “significant bodily injury” is a temporary loss of the function of a body part or organ, or of one of the five senses; and “serious bodily injury” is injury that creates a substantial risk of death or causes serious, permanent disfigurement or protracted loss or impairment of the function of a body part or organ. Purposely causing bodily injury is usually a disorderly persons simple assault (up to 6 months), significant bodily injury is a 3rd-degree aggravated assault (3 to 5 years), and serious bodily injury is a 2nd-degree aggravated assault (5 to 10 years, with the No Early Release Act’s 85% parole bar).

The level of injury often decides which court hears the case and whether prison is presumed. It is also heavily contested, because words such as “protracted,” “temporary” and “substantial risk” leave room for argument. This page explains each definition, where it appears in the assault statute, and how it is proved and challenged. For how these tiers fit into the whole body of assault law, see our legal guide to assault in New Jersey.

The Three Statutory Definitions

The definitions below are quoted from N.J.S.A. 2C:11-1.

Bodily injury: 2C:11-1(a)

“‘Bodily injury’ means physical pain, illness or any impairment of physical condition.” The threshold is low. No visible mark is required, and testimony that a punch hurt can be enough if believed. The dispute is usually about credibility: whether contact happened, and whether it caused pain.

Significant bodily injury: 2C:11-1(d)

“‘Significant bodily injury’ means bodily injury which creates a temporary loss of the function of any bodily member or organ or temporary loss of any one of the five senses.” Examples that fit the words include an eye swollen shut for several days or a temporary loss of hearing after a blow to the head. The loss must be real, but it need not last.

Serious bodily injury: 2C:11-1(b)

“‘Serious bodily injury’ means bodily injury which creates a substantial risk of death or which causes serious, permanent disfigurement, or protracted loss or impairment of the function of any bodily member or organ.” There are three separate routes into this tier:

1. Substantial risk of death. The injury itself, judged medically, put the person’s life at real risk.
2. Serious, permanent disfigurement. A scar must be both serious and permanent, not just visible.
3. Protracted loss or impairment of function. Reduced use of a limb or organ over a long period can qualify, not only total loss.

The line between “temporary loss” (significant) and “protracted loss or impairment” (serious) is one of duration and degree. The statute gives no number of days or weeks, and many grading disputes arise there.

How Each Injury Level Grades an Assault

An attempt is graded by what was attempted. Under 2C:12-1(b)(1), attempting to cause serious bodily injury is a 2nd-degree crime even if the actual injury was minor or nonexistent. The same logic applies to significant bodily injury under (b)(7). New Jersey’s model jury charge explains that an attempt requires proof of purpose to cause that level of harm. Where the injury actually occurs, the State may prove it was caused purposely, knowingly, or recklessly “under circumstances manifesting extreme indifference to the value of human life,” which the charge describes as a probability, not a mere possibility, of the harm.

A weapon changes the analysis. Purposely or knowingly causing bodily injury with a deadly weapon is a 3rd-degree crime under 2C:12-1(b)(2), and recklessly causing it is 4th degree under (b)(3). Negligently causing bodily injury with a deadly weapon stays a disorderly persons simple assault under (a)(2). “Deadly weapon” is defined in 2C:11-1(c) by how an object is used or fashioned, so an everyday object can qualify. The full grading picture is in our post on what degree an assault charge is in New Jersey.

Where the Injury Level Matters Elsewhere in 2C:12-1

The tiers also set the grade in other provisions.

Two other provisions also turn on injury:

• Protected persons. A simple assault on a police officer, teacher, health care worker or other listed person under 2C:12-1(b)(5) is 3rd degree if the victim suffers bodily injury and 4th degree if not. Serious bodily injury to a law enforcement officer makes it 2nd degree. See our page on assault on protected persons.
• Domestic violence victims. Attempting to cause or causing significant bodily injury to a victim of domestic violence is 3rd degree under 2C:12-1(b)(12), and the usual first-offender presumption against prison in 2C:44-1(e) does not apply. Strangulation of a domestic violence victim under (b)(13) is 2nd degree when it causes or attempts to cause bodily injury. See our domestic violence page.

Serious Bodily Injury and NERA

The No Early Release Act, N.J.S.A. 2C:43-7.2, applies to listed 1st- and 2nd-degree crimes, and the list includes aggravated assault under 2C:12-1(b). In practice that means the 2nd-degree forms, including serious-bodily-injury assault under (b)(1), the officer provision of (b)(5)(a) and strangulation under (b)(13). The defendant must serve 85% of the term before parole eligibility, followed by 3 years of parole supervision for a 2nd-degree crime. Our guide to the No Early Release Act works through the math.

The line between significant and serious bodily injury is therefore often the line between a 3rd-degree case with a realistic path to probation and a 2nd-degree case with a presumption of imprisonment under 2C:44-1(d).

How the Injury Level Is Proved and Challenged

The injury level is a fact the State must prove beyond a reasonable doubt. In State v. Sloane, 111 N.J. 293 (1988), the New Jersey Supreme Court held that whether a stab wound amounted to bodily injury or serious bodily injury was “at least rationally debatable” and therefore a question for the jury. Refusing to charge the lesser 3rd-degree offense was reversible error. Where the evidence supports it, the jury must be allowed to consider a lesser tier.

The evidence that decides the tier is usually medical:

• Medical records. Imaging and follow-up notes show whether an injury was life-threatening and how long any loss of function lasted.
• Photographs over time. Later photos show whether a scar is permanent.
• Expert testimony. A defense medical expert can address whether an impairment was “protracted” or ordinary healing.
• Causation. A pre-existing condition, a fall or a second person’s involvement can break the link to the defendant.

Injury and state of mind are separate questions. A serious injury can still fail as a 2nd-degree charge if the State cannot prove the required mental state. And if the defendant acted in self-defense, the injury level does not matter. The State must disprove self-defense beyond a reasonable doubt once it is raised, as our page on New Jersey self-defense law explains.

Why the Tier Determines the Court

Under N.J.S.A. 2C:1-4, disorderly persons offenses are not crimes under the State Constitution and carry no right to indictment or jury trial, so a simple assault is heard in the municipal court where the offense occurred. Once significant or serious injury is charged, the case is indictable and goes to the Superior Court in the county where the charge was filed. See our guide to indictable versus municipal charges.

Talk to Us About an Injury-Based Assault Charge

The injury charged in the complaint is a starting point, not a conclusion. Call William Proetta Criminal Law at (201) 793-8018 for a free, confidential case review, or contact us.