Key takeaways
- The three commonly used levels of injury severity are minor, moderate, and severe/catastrophic.
- Clinicians use precise scales — Glasgow Coma Scale for brain injury, first/second/third-degree for burns, and the six-point Abbreviated Injury Scale for trauma — that map back to these three tiers.
- Severity affects claim value: it drives treatment duration, permanency, future care, and lost wages.
- "Objective" injuries (fractures, imaging findings) are usually easier to prove than disputed "soft-tissue" injuries, even when the pain is real.
- Severity does not extend your deadline. Indiana generally allows two years to file a personal-injury lawsuit, and government claims have much shorter notice deadlines.
The three levels of injury severity
When people ask about "the 3 levels of injury severity," they are usually describing the practical framework that emergency staff, treating doctors, and insurance adjusters use every day: minor, moderate, and severe. The most serious end of "severe" is frequently described separately as catastrophic — permanent, life-altering harm. Here is what each tier generally means.
| Level | General description | Typical examples | Usual recovery outlook |
|---|---|---|---|
| Minor | Short-term harm that usually heals with little or no medical treatment | Bruises, minor lacerations, mild sprains, first-degree burns | Days to a few weeks |
| Moderate | More significant harm that needs medical care and time off, but is generally expected to improve | Simple fractures, moderate concussion, partial-thickness (second-degree) burns, disc injuries requiring therapy | Weeks to several months |
| Severe / catastrophic | Serious, often permanent harm with lasting impairment, disability, or threat to life | Severe traumatic brain injury, spinal cord injury, multiple or complex fractures, full-thickness (third-degree) burns, amputation | Many months to years, sometimes permanent |
These labels are useful shorthand, but they are not a substitute for a treating physician's evaluation. A burn that a doctor calls "minor" can still be painful and disruptive, and an injury that looks small at the scene can turn out to be far more serious once imaging is done. If you are unsure how serious your injury is, our overview of what counts as a severe injury in an Indiana car accident walks through the warning signs in more detail.
How doctors actually measure severity
The three-tier framework is a summary of more detailed medical scales. Understanding those scales helps explain why documentation matters so much in an injury claim.
Brain injuries: the Glasgow Coma Scale
For head trauma, clinicians classify a traumatic brain injury as mild, moderate, or severe using the Glasgow Coma Scale (GCS), which scores eye, verbal, and motor responses. According to the National Institutes of Health's medical reference, a GCS of 13–15 is classified as mild, 9–12 as moderate, and 8 or below as severe[1]. A "mild" TBI (like many concussions) can still cause weeks of symptoms, which is why we tell readers not to dismiss a concussion just because a scan looks normal.
Burns: degree and severity
Burns are described two ways — by depth and by overall severity. As the Merck Manual explains, burns are classified as minor, moderate, or severe[2], and depth is graded as first-degree (superficial), second-degree (partial thickness), or third-degree (full thickness). Deeper and larger burns are more serious and more likely to leave permanent scarring.
Overall trauma: the Abbreviated Injury Scale
For broader trauma, hospitals and researchers use the Abbreviated Injury Scale (AIS), a six-point ranking. As summarized in a peer-reviewed medical study hosted by the National Library of Medicine, the AIS ranks each injury from 1 (minor) and 2 (moderate) through serious, severe, critical, up to 6 (unsurvivable)[3]. Even this precise, six-point tool is commonly grouped into the same practical buckets: minor, moderate, and severe.
How severity affects an Indiana injury claim
Severity is one of the biggest drivers of what a claim is worth, because it shapes almost every category of damages. Here is how the three levels typically play out in a personal-injury claim.
| Factor | Minor injury | Moderate injury | Severe / catastrophic injury |
|---|---|---|---|
| Medical documentation | Brief ER or urgent-care visit | Imaging, specialist visits, physical therapy | Hospitalization, surgery, ongoing specialists, life-care planning |
| Treatment duration | Short | Weeks to months | Months to lifelong |
| Permanency / impairment | Usually none | Sometimes partial | Often permanent |
| Lost wages | Little or none | Time off during recovery | Extended time off or lost earning capacity |
| Non-economic damages | Lower | Moderate | Higher, reflecting lasting effects |
Because severity affects so many categories at once, thorough medical records are the backbone of a claim. For a deeper look at how these pieces build value, see our guide to what affects an Indiana car accident settlement's worth. And because insurers frequently point to missed appointments to argue an injury was not serious, it is worth understanding why gaps in treatment matter in an Indiana injury claim.
Examples: crashes, falls, and work injuries
The same three-tier framework applies across different kinds of accidents, though the mechanics of the claim differ.
- Car accidents: A low-speed fender bender might cause only a minor sprain, while a high-speed crash can produce severe fractures or a brain injury. The three levels help explain why two crashes can settle for very different amounts.
- Slip and falls / premises injuries: A bruised hip is minor; a fractured wrist is moderate; a fall causing a spinal or head injury can be severe or catastrophic.
- Workplace third-party injuries: If someone other than your employer caused a work injury, you may have both a workers' compensation claim and a separate personal-injury claim, and severity affects both. See our explainer on when a work injury may create both a workers' comp claim and a personal injury claim.
Disputed soft-tissue vs. objective injuries
One reason severity gets contested is the difference between objective injuries and soft-tissue injuries. Objective injuries — a broken bone on an X-ray, a herniation on an MRI, a bleed on a CT scan — are visible on imaging and harder for an insurer to dispute. Soft-tissue injuries — whiplash, strains, and sprains — are real and can be genuinely disabling, but they often do not show up clearly on standard imaging.
Insurance adjusters commonly argue that a soft-tissue injury is "minor" and worth very little, even when the person is in significant pain. That does not mean the injury is unprovable. Consistent treatment records, a clear symptom timeline, and provider notes connecting the injury to the accident all help. Our guides on hard-to-prove injuries in Indiana and the common types of soft-tissue injuries after a car accident explain how documentation carries these claims.
Deadlines still apply regardless of severity
No matter how minor or severe an injury is, Indiana's filing deadlines control whether a claim can proceed. A more serious injury does not automatically give you more time.
- Two-year general deadline. Indiana generally requires most personal-injury lawsuits to be filed within two years of the injury under Indiana Code § 34-11-2-4[4]. Certain exceptions can apply, such as tolling for minors.
- Comparative fault. Under Indiana's Comparative Fault Act, your own share of fault reduces your recovery, and a claimant more than 50% at fault is generally barred from recovering — the "51% rule" in Indiana Code § 34-51-2-6[5]. See our detailed breakdown of Indiana's 51% fault rule.
- Government claims have shorter notice deadlines. If a government entity is involved, the Indiana Tort Claims Act requires a written notice — generally 180 days for a political subdivision like a city or county, and 270 days for the State. These deadlines appear in Indiana Code § 34-13-3-8[6] and § 34-13-3-6.
Practical next steps
- Get evaluated promptly. A medical professional — not an adjuster — should classify how serious your injury is. Prompt care also documents the connection to the accident.
- Keep every record. Save discharge papers, imaging reports, therapy notes, and receipts. These records are what establish severity.
- Track symptoms and time off work. A simple journal of pain, limitations, and missed workdays supports both moderate and severe claims.
- Don't guess about deadlines. If a city, county, or state entity may be involved, the notice window is short — act quickly.
- Ask questions before signing anything. A first offer often arrives before the full severity of an injury is known.
If you were hurt in Fort Wayne, Allen County, or anywhere in Indiana and are not sure how serious your injury is or what it means for a claim, our Fort Wayne personal injury team can help you understand your options. For life-altering harm, our catastrophic injury attorneys focus on future medical proof and long-term needs.
Frequently asked questions
What are the 3 levels of injury severity?
The three levels most people mean are minor, moderate, and severe. The most serious "severe" injuries are often called catastrophic. Doctors use more detailed tools — like the Glasgow Coma Scale for brain injuries and burn-depth degrees for burns — but those scores still summarize into these three practical tiers.
Is a "minor" injury still worth a claim in Indiana?
It can be. A medically minor injury may still involve real medical bills, missed work, and pain. Whether pursuing a claim makes sense depends on the facts, the fault picture, and the insurance available. A free consultation can help you weigh it.
How does injury severity change what my claim is worth?
Severity drives treatment duration, permanency, future care needs, lost wages, and non-economic damages. A severe or catastrophic injury generally supports a larger claim because the losses are larger and longer-lasting — but the amount always depends on evidence, fault, and available coverage.
Why do insurers call my injury "minor"?
Adjusters may label an injury minor — especially disputed soft-tissue injuries — to justify a lower offer. Consistent treatment records, imaging where available, and clear provider notes linking the injury to the accident help counter that argument.
Does a more severe injury give me more time to file in Indiana?
No. Indiana generally applies a two-year deadline under Indiana Code § 34-11-2-4[4] regardless of how serious the injury is, and government-entity claims have much shorter notice deadlines. Severity does not extend these deadlines, so it is best to act early.
Talk with someone before the deadline runs. You do not have to figure out the severity of your injury or the value of your claim alone. Delventhal Law Office can review what happened, explain the deadlines that may apply, and help you decide the next step. A free consultation carries no obligation — call (260) 484-6655 or reach us through our contact page.
This article is general information about Indiana law and is not legal or medical advice. Reading it or contacting Delventhal Law Office does not create an attorney-client relationship. For advice about your specific situation, speak with a qualified attorney or medical professional.
Sources
- GCS of 13–15 is classified as mild, 9–12 as moderate, and 8 or below as severe (ncbi.nlm.nih.gov) ↩
- classified as minor, moderate, or severe (merckmanuals.com) ↩
- 1 (minor) and 2 (moderate) through serious, severe, critical, up to 6 (unsurvivable) (pmc.ncbi.nlm.nih.gov) ↩
- Indiana Code § 34-11-2-4 (iga.in.gov) ↩
- Indiana Code § 34-51-2-6 (iga.in.gov) ↩
- Indiana Code § 34-13-3-8 (iga.in.gov) ↩
