A doctor just told you your husband has a "moderate traumatic brain injury." Or your daughter's chart says "severe TBI, GCS 6." Nobody translated. This guide does. It explains how doctors grade brain injuries, what each grade means for recovery, and what Missouri law gives your family when someone else's negligence caused the injury.

We wrote this for the spouse in the ICU waiting room, the parent reading a discharge summary at midnight, and the survivor who left the hospital months ago and still doesn't feel right. You will learn the numbers behind the labels, the symptoms that demand action, and the deadlines that quietly decide whether your family can afford a lifetime of care.

How doctors grade a brain injury: mild, moderate, or severe

Doctors classify traumatic brain injury along three measures. The first is the Glasgow Coma Scale, a 15-point bedside score of eye, verbal, and motor responses recorded in the emergency room. The second is how long you lost consciousness. The third is post-traumatic amnesia — the stretch after the injury when your brain cannot form new memories.

The commonly used cutoffs work like this:

Mild TBI: Glasgow score of 13 to 15, unconsciousness under 30 minutes, amnesia under 24 hours
Moderate TBI: Glasgow score of 9 to 12, unconsciousness from 30 minutes to 24 hours, amnesia lasting one to seven days
Severe TBI: Glasgow score of 3 to 8, unconsciousness over 24 hours, amnesia lasting more than seven days

The Centers for Disease Control and Prevention defines a TBI as a bump, blow, or jolt to the head — or a penetrating injury — that disrupts normal brain function. Car crashes and falls cause most of them. The grade tells your doctors how urgently to act and roughly what to expect. It does not, by itself, predict anyone's future.

What a moderate brain injury means for you or your loved one

A moderate TBI sits in an awkward middle. The injury is real and often visible on imaging — a bruised brain, a small bleed, a skull fracture. Yet many survivors look fine within weeks. They walk, talk, and joke with visitors. Then they try to go back to work and discover they cannot hold a train of thought through a single meeting.

Expect a hospital stay of days to weeks, followed by structured rehabilitation: physical therapy for balance and strength, occupational therapy for daily tasks, speech therapy for language and cognition. Most moderate-TBI survivors improve substantially over six to twelve months. Many return to work, sometimes with reduced hours or lighter duties. But "moderate" describes the first hours after the injury, not the rest of your life. A meaningful share of survivors keep lasting deficits — slowed processing, poor short-term memory, headaches, mood swings that strain a marriage.

That gap between looking recovered and being recovered is where families get hurt twice: once by the injury, once by the assumption that it healed. MedlinePlus, the National Library of Medicine's patient resource, describes how attention, memory, and behavior problems can persist long after the visible injuries close.

What a severe brain injury means for your family

Severe TBI is a different order of crisis. The survivor often spends days or weeks in a coma or a minimally conscious state. Families make decisions about breathing tubes, feeding tubes, and pressure-relieving skull surgery while doctors speak in probabilities. Nobody can tell you on day three what day ninety will look like.

Recovery runs on a longer clock. The fastest gains come in the first six months, but meaningful improvement can continue for two years or more. Some survivors walk out of rehabilitation and rebuild full lives. Others need help with every meal, every transfer, every hour of the day, for the rest of their lives. Most families land somewhere between those poles.

The practical consequences arrive fast. A paycheck stops. A spouse becomes a caregiver. Rehabilitation hospitals, home modifications, wheelchairs, and attendant care generate bills that dwarf a normal family's savings. This is why the legal classification of the injury matters as much as the medical one: a severe TBI claim must account for decades of future needs, not just the invoices in the first envelope.

The symptoms and red flags you should never ignore

Moderate and severe brain injuries produce symptoms across three channels. Knowing them helps you advocate in the hospital and document what the injury took.

Physical: headaches that will not quit, repeated vomiting, seizures, slurred speech, weak or numb limbs, poor coordination, one pupil larger than the other, unusual drowsiness
Cognitive: deep confusion, memory gaps, trouble recognizing familiar people or places, slowed thinking, poor judgment, inability to follow a conversation
Emotional and behavioral: agitation, aggression, depression, anxiety, impulsivity, personality changes that frighten the people who know the survivor best

Some red flags demand an emergency room now, not a call in the morning: a seizure, repeated vomiting, worsening headache, confusion that deepens, unequal pupils, or a person you cannot wake. After a hospital discharge, any new symptom from that list means go back. Trust the pattern you see at home; families catch deterioration before anyone else does.

Why moderate brain injuries get underestimated

Here is the trap insurance adjusters count on. An early CT scan comes back "unremarkable." The survivor seems lucid. Six months later, when memory problems and crushing fatigue surface, the insurer argues the symptoms come from depression, stress, age — anything but the crash.

The medical reality is less convenient for them. Some brain injuries, including diffuse axonal injury — microscopic tearing of the brain's wiring caused by violent rotation of the head — do not show up on a standard CT or even an early MRI. The absence of a lesion on film does not mean the absence of an injury. Our companion article on the myth that no loss of consciousness means no brain injury covers this in detail.

So how does anyone prove an injury the camera missed? Through records and experts. Neuropsychological testing measures memory, attention, and processing speed against normal baselines. Treating physicians connect the timeline. Coworkers and family describe who you were before and who came home after. In Missouri court, that expert testimony must clear the reliability gate of RSMo 490.065, Missouri's adoption of the federal standard shaped by Daubert v. Merrell Dow Pharmaceuticals, Inc., 509 U.S. 579 (1993), and applied in Missouri cases such as Johnson v. McCullough, 306 S.W.3d 551 (Mo. banc 2010). Careful, early documentation is what turns real symptoms into admissible proof.

What fair compensation has to cover after a serious brain injury

A serious TBI claim is built around one question: what will this injury cost over a lifetime? The answer has several parts.

Past and future medical care: emergency treatment, surgery, rehabilitation, medications, therapy, and periodic re-evaluation
Attendant and custodial care: paid caregivers or the real value of the care family members now provide every day
Lost income and earning capacity: wages already missed, plus the career the survivor can no longer perform
Home and vehicle modifications: ramps, accessible bathrooms, specialized equipment
Pain, suffering, and loss of enjoyment of life: the human losses no invoice captures
Loss of consortium: the injury's damage to the marriage itself, a claim the spouse can bring

Life-care planners and economists translate these needs into numbers a jury can use. That translation matters because jurors anchor on concrete figures, and because a settlement signed too early — before the future costs are measured — cannot be reopened when the money runs out. Our article on the cost of a traumatic brain injury in Missouri walks through those numbers in more depth.

Who pays for a brain injury in Missouri

Responsibility follows negligence. If a distracted driver ran a red light, that driver's liability insurance pays first. If a property owner ignored a broken staircase, the owner's insurer answers. If a commercial truck caused the crash, the trucking company's larger policy comes into play. When the at-fault driver carries little or no insurance, your own uninsured or underinsured motorist coverage can fill the gap — which is why we tell every family to pull their own policy declarations page early.

Workplace injuries follow a different track. Missouri's workers' compensation system covers medical care and a portion of lost wages without any proof of fault. In exchange, RSMo 287.120 makes workers' compensation the exclusive remedy against your employer — you generally cannot sue the employer in tort, even when its choices put you in harm's way. But the exclusive-remedy rule protects only the employer. A negligent third party — a subcontractor, an equipment manufacturer, a property owner, an at-fault driver — remains fully suable, and third-party claims often make the difference between inadequate and adequate compensation. Our workers' compensation practice page explains that system, and our traumatic brain injury practice page explains how we build these cases.

Missouri's deadlines and fault rules shape every brain injury claim

Two Missouri rules decide whether the law helps you at all. The first is the statute of limitations. Under RSMo 516.120, you generally have five years from the injury to file a personal-injury lawsuit. Five years sounds generous. It is not, when the first two years disappear into rehabilitation and the evidence — witnesses, vehicles, surveillance footage — fades within months. Narrow exceptions exist for minors and people who lack legal capacity, but Missouri has no general discovery rule that saves an adult who simply waited. Workers' compensation deadlines run much shorter, so report a work injury to the employer promptly.

The second rule is comparative fault. Missouri follows pure comparative fault under RSMo 537.765, the system the Missouri Supreme Court adopted in Gustafson v. Benda, 661 S.W.2d 11 (Mo. banc 1983). Your recovery shrinks by your share of fault but never disappears because of it. A survivor found 20 percent at fault still recovers 80 percent of proven damages. Expect the defense to argue the survivor's own conduct — no seatbelt, no helmet, a misstep on a ladder — caused or worsened the injury. Honest preparation for that argument is part of every serious TBI case.

What to do after a moderate or severe brain injury

You cannot control the injury. You can control what happens next, and the steps below protect both the survivor's health and the family's legal position.

Get every recommended evaluation. Insist on referrals to neurology and neuropsychology. A normal early scan does not end the question.
Start a symptom journal today. Record headaches, memory lapses, sleep, mood, and missed work. Contemporaneous notes beat memory at trial.
Keep every bill and explanation of benefits. Future-care claims are built on documented past care.
Preserve the evidence. Photograph the scene, the vehicle, the hazard. Get witness names before they scatter.
Report a workplace injury in writing now. Workers' compensation deadlines are short and unforgiving.
Decline recorded statements and early settlement offers. An offer made before prognosis is clear prices the injury at its cheapest.
Talk to a lawyer before the evidence ages. A consultation costs nothing and locks down the deadlines that apply to your facts.

Common questions about moderate and severe brain injuries

Can a moderate TBI become a severe disability?

Yes. The grade measures the first hours, not the outcome. Most moderate-TBI survivors recover well, but a significant minority live with lasting cognitive, physical, or emotional deficits. Persistent symptoms deserve specialist evaluation, not dismissal — and they belong in the legal claim, too.

The CT scan was normal. Can there still be a brain injury?

Yes. Standard CT and even early MRI can miss microscopic injuries such as diffuse axonal injury. Doctors diagnose those injuries from symptoms, neurological exams, and neuropsychological testing over time. A clean scan is one data point, not a verdict.

How long do we have to file a lawsuit in Missouri?

Generally five years from the injury for a personal-injury claim, under RSMo 516.120. Wrongful-death claims and workers' compensation claims carry different, shorter deadlines, and claims against government entities can require notice within months. Do not guess which clock applies to your family — ask early.

What if the injured person partly caused the accident?

Missouri's pure comparative-fault rule reduces the recovery by the survivor's percentage of fault but does not erase it. Even significant fault leaves a recoverable share, which in a severe-TBI case can still be substantial.

You don't have to carry this alone

A moderate or severe brain injury rewrites a family's plans in a single afternoon. The medical system will grade the injury and move on. Your family has to live with the number on the chart — and pay for it.

At Ott Law Firm, we help Missouri families turn a devastating diagnosis into a documented claim: the right specialists, the right evidence, and a damages model that covers a lifetime, not a billing cycle. If someone else's negligence caused the injury, call us at (314) 710-2740 or reach us through our contact page. The consultation is free, and you pay no fee unless we recover for you.

This article is for informational purposes only and does not constitute legal advice. It creates no attorney-client relationship. Every case is different, and past results do not guarantee future outcomes. For medical concerns, rely on the survivor's treating physicians; for legal advice about your facts, speak with a licensed Missouri attorney.

Classifying Brain Injuries: Delving into Moderate to Severe Traumatic Brain Injuries