Get a Free Consultation with a Personal Injury Lawyer

Review by T.V.

"I highly recommend BB&G ... I would give 10 stars if I could!"

Review by G.V.

"I am so very pleased with the representation from BB&G!"

Review by M.S.

"The attorneys at BBG were exceptional. The outcome was better than we hoped."

Review by R.G.

"From the moment I contacted this firm I was treated like family."

Review by A.H.

"We couldn't be happier with the outcome or the excellent service."

Review by V.A.

"We felt very secure and confident with their representation."

Review by J.P.

"Briskman Briskman & Greenberg is a legal force to be reckoned with."

Review by T.Z.

"I'm happy with how they handled my case and recommend giving them a call!"

Review by K.N.

"Very easy process with the help of these amazing people. Very happy outcome!"

FREE CONSULTATION

GET A FREE CONSULTATION

Our Lawyers

Delayed Diagnosis of Life-Threatening Conditions Medical Malpractice in Chicago

A delayed diagnosis of a life-threatening condition is not just a medical setback. It can be the difference between a full recovery and permanent disability, or between life and death. When a doctor, hospital, or other healthcare provider in Chicago fails to diagnose a serious condition in time, and that failure falls below the accepted standard of care, the patient may have a valid medical malpractice claim under Illinois law. If you or someone you love has been harmed by a delayed diagnosis, you deserve honest answers and real legal guidance. Briskman Briskman & Greenberg, located at 205 W Randolph St., Suite 925, Chicago, IL 60606, represents patients and families throughout the Chicago area who have suffered because of diagnostic failures. As a Chicago personal injury lawyer firm with deep roots in this community, we understand what is at stake when a diagnosis comes too late.

What a Delayed Diagnosis of a Life-Threatening Condition Actually Means
How Illinois Law Defines Medical Negligence in Delayed Diagnosis Cases
Illinois Filing Requirements: What You Must Do Before You Can Sue
Illinois Deadlines for Filing a Delayed Diagnosis Claim
Common Conditions Involved in Delayed Diagnosis Malpractice Claims in Chicago
What Compensation May Be Available in a Delayed Diagnosis Case
Why Chicago Patients Trust Briskman Briskman & Greenberg With Delayed Diagnosis Claims
FAQs About Delayed Diagnosis of Life-Threatening Conditions Medical Malpractice in Chicago

What a Delayed Diagnosis of a Life-Threatening Condition Actually Means

A delayed diagnosis occurs when a healthcare provider fails to identify a serious medical condition within a timeframe that a reasonably competent provider would have met under similar circumstances. The delay does not have to be days or weeks to cause serious harm. For conditions like sepsis, a stroke, a heart attack, or an aortic dissection, even a few hours can determine whether a patient survives or suffers permanent damage.

Think about a patient who arrives at a Chicago emergency room near Millennium Park complaining of chest pain and shortness of breath. A competent physician orders an ECG and blood work. A delayed or distracted physician dismisses the symptoms as anxiety or acid reflux. Hours pass. The patient suffers a major cardiac event that could have been stopped. That gap between when the diagnosis should have happened and when it actually happened, or whether it happened at all, is the foundation of a delayed diagnosis claim.

Delayed diagnosis is distinct from a failure to diagnose, where no diagnosis is ever made, and from misdiagnosis, where the wrong condition is identified. All three can support a medical malpractice claim, but they involve different facts and timelines. Conditions most commonly involved in these claims include cancer, sepsis, stroke, heart attack, pulmonary embolism, internal bleeding, meningitis, appendicitis, and aortic dissection. Each of these conditions has a narrow treatment window, and a delay in identifying them can close that window permanently.

Doctors, nurses, lab technicians, radiologists, and hospitals can all play a role in a diagnostic failure. A radiologist who misreads a CT scan, a primary care physician who fails to refer a patient to a specialist, or a nurse who does not escalate a patient’s deteriorating condition can each contribute to a delay that causes serious harm. Illinois law recognizes that multiple providers can share responsibility for a single diagnostic failure.

How Illinois Law Defines Medical Negligence in Delayed Diagnosis Cases

Illinois medical malpractice law requires a patient to prove four core elements: duty, breach, causation, and damages. In a delayed diagnosis case, the duty element is straightforward. Every licensed healthcare provider owes a patient a duty to meet the accepted medical standard of care. The breach happens when that provider’s conduct falls below what a reasonably competent provider would have done in the same situation.

The standard of care is not a vague concept. In medical malpractice cases, a professional standard of care is based on the usual and customary practices of other medical professionals with the same level of training. A cardiologist is held to the standard of a competent cardiologist. A hospital emergency department is held to the standard of a reasonably run emergency department. The comparison is always made within the same specialty and clinical setting.

Causation is often the hardest element to prove. If a physician misdiagnoses a rapidly progressing disease, and this misdiagnosis leads to a significant delay in appropriate treatment, an Illinois court would require evidence that this delay directly worsened the patient’s prognosis or caused additional harm that could have been avoided with timely and correct diagnosis. For instance, if a delayed cancer diagnosis resulted in the cancer progressing to an inoperable stage, the causation element would likely be met. The patient must show that an earlier diagnosis would have produced a meaningfully better outcome.

Proving that connection requires qualified medical testimony. Illinois medical malpractice cases require testimony from a qualified medical expert who can testify that the healthcare provider’s failure to diagnose the condition in a timely manner fell below the standard of care. The expert must be a specialist in the field of medicine relevant to the case, such as oncology for cancer-related claims or cardiology for heart disease cases. Without this testimony, a case cannot proceed.

Damages in a delayed diagnosis case can include past and future medical expenses, lost wages, pain and suffering, and loss of normal life. When a patient dies because of a delayed diagnosis, surviving family members may bring a claim under the Illinois Wrongful Death Act, 740 ILCS 180. Under Section 1 of that Act, when a death is caused by a wrongful act or neglect, the party who would have been liable if death had not occurred remains liable to an action for damages, notwithstanding the death of the person injured.

Illinois Filing Requirements: What You Must Do Before You Can Sue

Illinois has strict procedural rules for medical malpractice cases. You cannot simply file a complaint and wait for trial. Before a delayed diagnosis lawsuit can proceed in Illinois, the law requires a specific preliminary step that many patients do not know about.

Under the Illinois Healing Art Malpractice Act, 735 ILCS 5/2-622, the plaintiff’s attorney must file an affidavit attached to the complaint declaring that a qualified health professional has reviewed the case. That professional must have determined, in a written report, that there is a reasonable and meritorious cause for filing the action. The reviewing health professional must be knowledgeable in the relevant issues involved in the case. Illinois law requires that this individual has practiced or taught within the last six years in the same area of health care at issue. The professional must also produce a written report confirming, after reviewing the medical record, that reasonable and meritorious cause exists for the lawsuit. This requirement serves as an early screening mechanism to prevent frivolous claims while ensuring every case has been vetted by someone with relevant clinical knowledge.

This means that before your attorney files anything in court, a medical expert must review your records and sign off on your claim. That process takes time, which is why waiting to consult an attorney is always a mistake. The expert review process alone can take weeks or months, and it must be completed before the complaint is filed.

Illinois also governs how fault is shared among multiple defendants. Under the Illinois Code of Civil Procedure, 735 ILCS 5/2-1117, all defendants found liable are jointly and severally liable for a plaintiff’s past and future medical and medically related expenses. Any defendant whose share of fault is 25 percent or greater is jointly and severally liable for all other damages. This matters in delayed diagnosis cases because the fault may be spread across a primary care physician, a specialist, a radiologist, and a hospital system, all of whom may share responsibility for the delay.

Illinois Deadlines for Filing a Delayed Diagnosis Claim

Missing the filing deadline in a medical malpractice case is fatal to the claim. Illinois courts have no flexibility on this point. If you file a diagnostic malpractice claim even one day late, your case may be dismissed, no matter how strong your evidence is. Understanding the timeline is not optional. It is the first legal question that must be answered in every delayed diagnosis case.

Under the Illinois Code of Civil Procedure, 735 ILCS 5/13-212, most medical malpractice claims must be filed within two years of the date the patient knew, or through the use of reasonable diligence should have known, of the injury and its connection to medical care. This is called the discovery rule. The clock does not necessarily start on the date of the medical visit where the mistake occurred. It starts when the patient knew or reasonably should have known that the delay caused harm.

However, Illinois also imposes a four-year statute of repose. Illinois also imposes a four-year statute of repose measured from the date of the negligent act or omission. This outer deadline operates independently of discovery and bars claims filed more than four years after the alleged malpractice occurred. The repose period cannot be extended by delayed discovery. That means even if you did not discover the error until year five, your claim is barred.

For minor patients, the rules are different. Under 735 ILCS 5/13-212(b), a minor’s claim can generally be brought up to eight years after the act or omission, but in no event after the minor’s 22nd birthday. This extended window matters in cases involving pediatric delayed diagnosis, where the harm from a missed condition may not be fully apparent until the child is older.

The Illinois Supreme Court addressed the discovery rule in Moon v. Rhode, 2016 IL 119572. The Illinois Supreme Court in Moon v. Rhode confirmed that discovery requires dual knowledge. Awareness of an adverse medical outcome alone is insufficient; the limitations period begins only when the plaintiff has reason to connect the injury to negligent medical care. Knowing that you got sicker is not enough. You must also have reason to believe that the worsening was caused by a provider’s failure to diagnose in time.

Given these deadlines, and the time required to complete the expert review required under 735 ILCS 5/2-622, anyone who suspects a delayed diagnosis caused harm should contact a medical malpractice lawyer as soon as possible. Every day of delay in seeking legal counsel is a day closer to losing the right to file.

Common Conditions Involved in Delayed Diagnosis Malpractice Claims in Chicago

Certain medical conditions are involved in delayed diagnosis claims more than others. These are conditions where time is a direct factor in survival and recovery, and where a delay in diagnosis has measurable, documented consequences.

Cancer is among the most common. A delayed cancer diagnosis can allow a tumor to progress from a treatable stage to one that is inoperable or terminal. Sepsis is another. Sepsis is a life-threatening response to infection that can cause organ failure and death within hours. When a hospital emergency department near the South Loop or a clinic in Lincoln Park fails to recognize the signs of sepsis, the consequences can be irreversible. Stroke and heart attack are equally time-sensitive. Every minute without treatment during a stroke causes neurons to die. A delayed stroke diagnosis at a Chicago hospital can mean the difference between full recovery and permanent paralysis.

Pulmonary embolism, which is a blood clot in the lungs, is frequently missed in emergency settings because its symptoms, including shortness of breath and chest pain, overlap with other conditions. Aortic dissection, a tear in the wall of the aorta, is another condition where a delayed diagnosis can be fatal within hours. Meningitis, appendicitis, and internal bleeding are also conditions where hours matter enormously.

Diagnostic failures in these cases often share common causes. Doctors may ignore symptoms or skip imaging, blood work, or biopsies that would have revealed the condition sooner. Abnormal labs or imaging may be misinterpreted or overlooked entirely. Repeated reports of pain, weakness, or neurological symptoms are sometimes dismissed without investigation. Primary care providers may wait too long to refer patients to specialists, costing critical time.

A medical malpractice attorney who handles delayed diagnosis cases understands how to work with medical experts to trace exactly where in the diagnostic process the failure occurred, whether it was a missed lab result, a failure to order appropriate imaging, a failure to refer to a specialist, or a failure to communicate critical test results to the treating physician.

What Compensation May Be Available in a Delayed Diagnosis Case

Illinois law allows patients harmed by a delayed diagnosis to seek full financial recovery for the consequences of that harm. The damages available depend on the severity of the injury, the treatment required, and the long-term impact on the patient’s life and livelihood.

Economic damages cover the financial losses caused by the delayed diagnosis. These include past and future medical expenses, costs for additional surgeries or treatments that became necessary because the condition was not caught in time, rehabilitation costs, home care expenses, and lost income if the patient was unable to work. In serious cases, an economist may be needed to calculate the full value of future earning capacity that was lost.

Non-economic damages cover the human cost of the delay. Pain and suffering, loss of normal life, emotional distress, and the loss of the ability to enjoy daily activities are all compensable under Illinois law. These damages are real and significant, even if they are harder to put a dollar figure on than medical bills.

When a delayed diagnosis leads to death, the patient’s family can pursue a wrongful death claim under the Illinois Wrongful Death Act, 740 ILCS 180. The Act allows surviving family members to recover damages for the grief, sorrow, and loss of companionship they have suffered. In a wrongful death case arising from healing art malpractice, punitive damages are not available under Illinois law, but compensatory damages can still be substantial.

Under 735 ILCS 5/2-1117, when multiple providers share responsibility for a delayed diagnosis, each defendant found liable at 25 percent or more of total fault is jointly and severally liable for all damages. This means that if a hospital system and an attending physician both contributed to a delay, both can be held responsible, and the patient does not have to absorb losses caused by one defendant’s inability to pay.

If you believe a delayed diagnosis caused you or a family member serious harm, contact Briskman Briskman & Greenberg at (312) 222-0010 for a free consultation. Our firm handles medical malpractice cases on a contingency fee basis, which means you pay no attorney’s fees unless we recover compensation for you. You should not face these consequences alone, and speaking with us does not create an attorney-client relationship until you and the firm agree to proceed together.

Why Chicago Patients Trust Briskman Briskman & Greenberg With Delayed Diagnosis Claims

Delayed diagnosis cases are among the most demanding in medical malpractice law. They require a thorough understanding of both medicine and Illinois law, and they demand the ability to work with qualified medical experts who can explain exactly where the standard of care was violated and how that violation caused harm.

Briskman Briskman & Greenberg has represented injured patients and families throughout the Chicago area, from the North Shore to the South Side, from the western suburbs to neighborhoods along Lake Shore Drive. Our firm understands the local court system, including the Cook County Circuit Court at the Daley Center on Washington Street, where many of these cases are litigated. We know the procedural demands of Illinois medical malpractice law, including the requirements of 735 ILCS 5/2-622, and we have the resources to meet them.

We handle every aspect of a delayed diagnosis claim. We gather and review medical records, work with qualified health professionals to evaluate whether the standard of care was met, identify all potentially liable parties, and build the causation evidence needed to connect the delay to the patient’s worsened outcome. Whether the failure happened at a major academic medical center, a community hospital, or an outpatient clinic, we investigate it thoroughly.

Our clients come to us because they want honest answers. We do not create expectations about results that cannot be promised. Every case is different, and outcomes depend on the specific facts, the available evidence, and how Illinois law applies to those facts. What we can promise is that we will give your case the serious attention it deserves. A medical malpractice lawyer at our firm will review your situation carefully and tell you what we honestly believe your options are.

If you or a family member suffered serious harm because a life-threatening condition was not diagnosed in time, reach out to Briskman Briskman & Greenberg at (312) 222-0010. You can also visit us at 205 W Randolph St., Suite 925, Chicago, IL 60606. We offer free consultations, and we are here to help you understand your rights under Illinois law. Patients in Joliet, Gurnee, and surrounding communities can also reach a medical malpractice attorney at our firm by calling the same number. Those in the Gurnee area can connect with a medical malpractice lawyer through our office as well.

FAQs About Delayed Diagnosis of Life-Threatening Conditions Medical Malpractice in Chicago

What is the difference between a delayed diagnosis and a misdiagnosis in Illinois?

A delayed diagnosis means a healthcare provider correctly identified the condition, but took too long to do so, causing harm that earlier diagnosis would have prevented. A misdiagnosis means the provider identified the wrong condition entirely. Both can support a medical malpractice claim in Illinois if the provider’s conduct fell below the accepted standard of care and caused measurable harm to the patient. The legal elements are the same for both types of claims: duty, breach, causation, and damages.

How long do I have to file a delayed diagnosis malpractice claim in Illinois?

Under 735 ILCS 5/13-212, most adults have two years from the date they knew or reasonably should have known that a delayed diagnosis caused their injury. There is also an absolute four-year statute of repose that bars claims filed more than four years after the negligent act, regardless of when the patient discovered the error. For minors, the deadline is generally up to eight years after the act or omission, but no later than the patient’s 22nd birthday. Because the expert review required under 735 ILCS 5/2-622 takes time to complete, you should contact an attorney well before any deadline approaches.

Who can be held liable for a delayed diagnosis in Chicago?

Liability can extend to any licensed healthcare provider whose conduct contributed to the diagnostic delay. This includes primary care physicians, emergency room doctors, specialists, nurses, radiologists, pathologists, laboratory technicians, and hospitals or outpatient clinics. Under 735 ILCS 5/2-1117, multiple defendants can share responsibility, and any defendant found to be 25 percent or more at fault is jointly and severally liable for all damages, not just their proportionate share.

What do I need to prove to win a delayed diagnosis malpractice case in Illinois?

You must prove four elements: that the healthcare provider owed you a duty of care, that the provider breached that duty by failing to meet the accepted medical standard of care, that the breach directly caused your harm, and that you suffered actual damages as a result. You also need a qualified medical expert to provide testimony supporting each of these elements. Before filing, your attorney must submit an affidavit under 735 ILCS 5/2-622 confirming that a qualified health professional reviewed the case and found reasonable and meritorious cause to proceed.

Can my family file a claim if a delayed diagnosis led to a loved one’s death?

Yes. Under the Illinois Wrongful Death Act, 740 ILCS 180, surviving family members can bring a claim when a wrongful act, neglect, or default causes a person’s death. A delayed diagnosis that falls below the standard of care and causes a patient’s death can support a wrongful death action. Recoverable damages may include medical expenses incurred before death, funeral costs, and compensation for the grief and loss of companionship suffered by surviving family members. Note that under Illinois law, punitive damages are not available in healing art malpractice cases, including those brought as wrongful death actions.

More Resources About Failure to Diagnose and Delayed Diagnosis

The overall experience I had with Briskman Briskman & Greenberg was the kind that everyone should receive from any firm.

The staff stayed in contact with me via phone and email, they were very knowledgeable, they made sure I understood what was going on at all times, they answered all of my questions, were transparent, and definitely exceeded my expectations. I highly recommend them.

- Brandon Spivey

The level of care, attentiveness, empathy and concern relating to my case when dealing with Briskman Briskman and Greenberg surpassed my expectations.

They were extremely knowledgeable and fair in all matters related. They exemplified excellent customer service and care. They kept me inform and updated every step of the way and any questions I had they answered. I highly recommend using them as I would again.

- Joshua Payton

I was put to ease with the professionalism at Briskman and Briskman.

Paul Greenberg especially put my mind to rest and within a years time I have settled my case and I am very satisfied with the outcome. My injury was devastating but working with this law firm has put a lot of stressful nights to rest.

- Nakia Childs

I needed a personal injury lawyer and Gavin and his team went above and beyond.

They made the process simple and helped me in every step of the way. What I really appreciate is that they are straightforward and are quick to respond to my questions and any issues from a text or phone call. They as well continuously checked up on me. I'm happy with how they handled my case and would recommend giving them a call!

- Ted Zakrzewski

Briskman Briskman & Greenberg Personal Injury & Car Accident Lawyers (BBG) is a legal team you want on your side.

They handled my case in a professional, sensitive and very competent manner. The staff exhibits expertise in the legal realm and provided excellent customer support and care. Thanks BBG for your help with navigating a very sensitive and challenging case for my family.

- Robin Albritton

If you were in an accident and need an excellent lawyer, talk to Paul!!

Very nice and professional lawyer that extremely cares about their clients. Fingers crossed I'm never in an accident ever again but if so, I' would definitely, 10/10 use Paul again!

- Danny S.

I am so very pleased with the representation from BB&G!

Robert Briskman handled my injury case very well. Funny and understanding personality and he took the time to explain everything in detail of the entire case. It was wonderful working with him. I would recommend BB&G to anyone and for myself again in the future.

- Geneva Vanderbilt

From the moment I contacted this law firm I was treated like family.

Gavin Pearlman was honest and upfront with me throughout the process. No surprises and never kept me hanging. I strongly recommend These attorneys for your needs.

- Ron Gaber

I cannot say enough good things about the attorneys at Briskman Briskman & Greenberg Personal Injury & Car Accident Lawyers.

They were extremely responsive, professional, and compassionate throughout the entire process.Their negotiations skills were exceptional, and they were able to secure a settlement that far exceeded my expectations.I am grateful to have had such a dedicated team