Medical Misdiagnosis Claims

A medical misdiagnosis occurs when a healthcare professional provides an incorrect, delayed, or missed diagnosis, causing avoidable harm. If negligence can be proven, you may be eligible to make a medical misdiagnosis claim for compensation.

Human error, inadequate training, equipment failures and other forms of negligence can all lead to a breach of the medical duty of care. This can result in an incorrect, delayed or missed diagnosis, putting you at risk of further injury or complications.

To find out if you can claim medical negligence compensation, arrange a free case assessment with an experienced legal adviser by calling 0800 470 0474 today. Alternatively, enter your details in our online claim form to receive a call back.

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Table of Contents

• What is a medical misdiagnosis claim?
• Am I eligible to make a claim for a medical misdiagnosis?
• Who may be liable for compensation in case of a medical misdiagnosis?
• How long do I have to make a misdiagnosis claim?
• How do I make a misdiagnosis claim?
• How much compensation is awarded for medical misdiagnosis cases?
• Can I make a medical misdiagnosis compensation claim on a No Win No Fee basis?
• How does a medical misdiagnosis occur?
• How will a misdiagnosis be confirmed?
• Which illnesses and injuries are most seen in claims for medical misdiagnosis?
• What are the possible consequences of an injury or illness being misdiagnosed?
• Can I claim medical misdiagnosis compensation from the NHS?
• Can I make a medical misdiagnosis claim for someone else?

What is a medical misdiagnosis claim?

A medical misdiagnosis is a type of medical negligence claim made when a healthcare professional fails to diagnose a condition correctly, on time, or at all, causing avoidable harm.

Some types of medical misdiagnosis that can lead to a claim include:

• False Positive – You are diagnosed with a condition that you don’t have, leading to unnecessary treatment or anxiety.
• False Negative – Tests fail to detect an existing condition, causing delays in treatment.
• Missed Diagnosis – A medical professional completely fails to identify a medical condition.
• Delayed Diagnosis – The condition is diagnosed only after an avoidable delay, leading to a worse outcome.
• Incorrect Diagnosis – You are diagnosed with the wrong condition, resulting in inappropriate or harmful treatment.

Am I eligible to make a claim for a medical misdiagnosis?

Yes. While not all cases of misdiagnosis can be considered negligence, you may be entitled to compensation if the following four elements can be established:

• Duty of care. You were owed a legal duty of care, which is a given anytime you seek treatment from a medical professional.
• Breach of duty. The care you received from the healthcare provider fell below the accepted standard for their profession.
• Causation. The breach directly caused or contributed to the harm you suffered.
• Damages. You suffered damages such as pain, suffering and financial losses due to the breach of duty.

A medical misdiagnosis solicitor can let you know if you are eligible to seek compensation for being misdiagnosed during a free case assessment.

Who may be liable for compensation in case of a medical misdiagnosis?

Liability for a medical misdiagnosis can fall on any healthcare professional or hospital that owed you a duty of care and failed to meet the required standard by failing to:

• Take your full medical history.
• Listen to your symptoms and investigate them thoroughly.
• Carry out the appropriate physical assessments.
• Order the right tests when symptoms require further investigation.
• Interpret test results accurately.
• Make timely referrals to specialists when needed.
• Clearly communicate with other specialists.
• Ensure diagnosis and treatment are not delayed unnecessarily.

How long do I have to make a misdiagnosis claim?

Usually, you must make a misdiagnosis claim within three years of the date you knew that you suffered harm due to medical negligence.

This time limit is established by the Limitation Act 1980, which provides the following exceptions:

• In medical negligence claims involving children, the three-year limitation period does not begin until the child’s 18th birthday.
• If the claimant is mentally incapacitated, the three-year limitation period does not begin unless they regain capacity.
• If you lost a loved one due to a misdiagnosis, the time limit to start a claim is three years from the date of death.

How do I make a misdiagnosis claim?

The general steps of a claim for medical misdiagnosis are:

• Contact a medical negligence solicitor. They can assess your situation, explain your options and advise on your chances of success.
• Gather evidence. Medical records, test results, scans and written correspondence are essential to seek compensation.
• Obtain an expert opinion. An independent medical expert will review your records and determine whether the diagnosis fell below an acceptable standard of care.
• Letter of claim. Your solicitor will send a formal letter to the healthcare provider explaining your allegations and evidence.
• Negotiations. If liability is admitted, your solicitor will negotiate a compensation settlement.
• Court proceedings. If the other side denies liability or negotiations are unsuccessful, you may need to argue your claim before a judge.

How much compensation is awarded for medical misdiagnosis cases?

The compensation awarded for a misdiagnosis is judged on an individual basis and includes:

• Compensation for pain, suffering and loss of amenity (general damages).
• Compensation for financial losses and expenses (special damages).

According to the Judicial College guidelines and our personal injury compensation calculator, you could receive the following:

• £8,550 to £28,240 for scarring due to unnecessary surgery.
• £1,000 to £200,000 for pain and suffering.
• £8,110 to £281,520 for wrongful amputation of a body part.
• £52,390 to £380,000 for spinal cord injuries.
• £8,180 to £100,670 for post-traumatic stress disorder.

After evaluating your case, your solicitor will be able to give you a fair estimate of how much compensation you could be entitled to claim.

Can I make a medical misdiagnosis compensation claim on a No Win No Fee basis?

Yes. Our specialist medical negligence team will help you claim compensation under a no win no fee agreement. This means you do not pay anything upfront, and you only pay your solicitor if your claim is successful.

If your claim succeeds, your solicitor will deduct a success fee from your compensation. This is capped at 25% and is agreed upon from the beginning.

How does a medical misdiagnosis occur?

A misdiagnosis can happen when a healthcare professional fails to meet the expected standard of care during the diagnostic process, due to causes such as:

• Failure to thoroughly assess symptoms and take your full medical history.
• Failure to carry out appropriate tests to help determine the cause of symptoms and cement a diagnosis.
• Misinterpreting test results by reading them incorrectly, missing anomalies or failing to communicate them properly.
• Technical errors due to faulty or poorly maintained medical equipment.
• Systemic factors, such as inadequate training or resources, limited access to diagnostic tests, high workload and understaffing.

These and other factors could result in injury or worsening of your condition. If your solicitor can prove negligence, you might be able to start a medical misdiagnosis claim.

How will a misdiagnosis be confirmed?

A medical misdiagnosis is usually confirmed by reviewing your medical records, seeking expert opinions and carrying out further tests. Your solicitor will help you gather key evidence to support your clinical negligence claim, such as:

• Your medical records and history, showing your symptoms, tests and treatments.
• A second opinion from another specialist will help confirm whether a misdiagnosis occurred.
• Additional tests, such as blood tests, X-rays, or biopsies, to confirm or rule out a diagnosis.
• Photographs showing the impact of the misdiagnosis.
• Statements from friends or family, as well as your testimony.
• Any correspondence between you and your doctor or the hospital.
• Your appointment dates and investigation results.
• Financial documents for any losses and expenses linked to the misdiagnosis.

Which illnesses and injuries are most seen in claims for medical misdiagnosis?

Some of the most commonly misdiagnosed conditions for which you may be able to claim compensation include:

• Cancer. Cancer misdiagnosis claims can be made when a doctor fails to detect cancer or mistakenly diagnoses cancer in a patient who does not have it.
• Heart attack. Heart attack symptoms can be mistaken for indigestion, muscle strain, or other minor conditions, and the consequences can be life-threatening.
• Stroke. Some symptoms, such as numbness, weakness and dizziness, can be misdiagnosed as migraines, vertigo, or seizures, which can lead to permanent brain damage or even death.
• Cauda equina syndrome. A missed or delayed diagnosis can lead to permanent nerve damage and disability, for which you can make a cauda equina syndrome claim.
• Meningitis. Early meningitis symptoms can resemble the flu or a common cold. Misdiagnosis can delay treatment and lead to severe complications, including death.
• Appendicitis. A missed diagnosis of appendicitis can result in serious complications, such as a burst appendix and peritonitis.
• Fractures. Misdiagnosed or untreated fractures, such as those of the scaphoid bone, can lead to long-term complications, such as chronic pain, disability, and arthritis.
• Infections. Missed or delayed diagnosis of infections, such as pneumonia, urinary tract infections, or sepsis, can lead to inadequate treatment and serious complications.

What are the possible consequences of an injury or illness being misdiagnosed?

The consequences of a misdiagnosis can vary depending on the condition and the length of the delay in receiving a correct diagnosis, and include:

• Delays in treatment and the worsening of the condition.
• A much worse prognosis and outcome.
• Unnecessary interventions or surgery.
• Permanent and debilitating physical injuries and disability.
• Severe emotional and psychological distress.
• The need for long-term care and rehabilitation.
• Lost income and financial burden on the patient.
• Loss of amenities, independence and relationships.

Can I claim medical misdiagnosis compensation from the NHS?

Yes, you could make a claim against the NHS if negligent medical care caused you harm. The NHS has a duty to provide care that meets established standards, and if this duty is breached, it is liable for compensation.

All NHS misdiagnosis claims are handled by NHS Resolution, a specialist insurance body funded by annual premiums paid by NHS Trusts. They do not affect the budget for patient care and treatment.

Can I make a medical misdiagnosis claim for someone else?

Yes, you may be entitled to claim compensation on behalf of someone else if they cannot start legal proceedings themselves due to physical or mental incapacity or if they are a child. In this case, you would act as their litigation friend and claim on their behalf.

Under the Fatal Accidents Act 1976, you could also claim compensation for medical negligence if you lost a loved one because of a misdiagnosis. This will cover financial losses, loss of services, funeral expenses and bereavement damages.

If you want to start a misdiagnosis claim or learn more about your legal rights, call 0800 470 0474 today for a free consultation with an experienced legal adviser. Alternatively, use our contact form to receive a call back, with no obligation to proceed.

Last edited on 4th Dec 2025

With over 15 years’ experience in the legal sector, Nicholas Tate (LLB Hons, LLM in Health Law) has extensive experience across all areas of personal injury and medical negligence claims.