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How To Make A Complaint About A Misdiagnosis And Claim Compensation

Last Updated On 5th June 2025. In this guide, we will examine how to make a complaint about misdiagnosis. If you have been given the wrong diagnosis when receiving care in a medical setting, you may wonder whether you can report the incident or raise your concerns. There are several bodies that you could make a complaint to about the care you received. In doing so, it could help you understand why mistakes were made. The process you may need to follow to make your complaint may differ depending on who you direct it to. We will explore this further as we move through our guide. 

Additionally, we will look at the duty of care medical professionals owe to their patients and how breaches of this duty can result in you suffering unnecessary or avoidable harm through misdiagnosis. In instances such as these, medical negligence may have occurred. We look at when it could be possible to claim compensation for the harm caused by medical negligence later on in our guide.

Furthermore, we discuss medical negligence compensation payouts to help you understand what they could include as well as how they are calculated.

At the bottom of this guide, there is a brief overview of the advantages of making your medical negligence claim with a solicitor who offers their services under a type of No Win No Fee contract.

For more information about the process of making a complaint following misdiagnosis, or potentially starting a claim for medical negligence, you can speak to our team. To do so, you can:

  • Phone on 0800 073 8804
  • Contact us online by completing a callback form.
  • Use the live chat feature at the bottom of the page.

A silver stethoscope rest on a judge's gavel

Browse Our Guide

  1. How To Make A Complaint About Misdiagnosis
  2. Can I Take Legal Action If My Injury Or Illness Was Misdiagnosed?
  3. Examples Of Medical Misdiagnosis
  4. What Evidence Can Be Used In A Misdiagnosis Claim?
  5. What Payout Could You Claim For Misdiagnosis?
  6. Check If You Could Make A No Win No Fee Misdiagnosis Negligence Claim
  7. Learn More About How To Make A Complaint About Misdiagnosis

How To Make A Complaint About Misdiagnosis

If you’re wondering how to make a complaint about misdiagnosis, we could help. Before starting the complaints procedure, you should find out who it is you should be complaining to. The complaints process may be slightly different depending on where the complaint is being made.

However, some steps you could potentially take include contacting the healthcare provider directly to let them know you are unhappy with their service. Alternatively, there are other bodies you could submit your complaint about misdiagnosis to, including:

  • Parliamentary and Health Service Ombudsman: This is a body set up by Parliament to handle complaints that have not been resolved by the NHS in England and UK government departments. 
  • Independent Sector Complaints Adjudication Service (ISCAS): The ISCAS is a voluntary subscriber scheme for the majority of independent healthcare providers. They can handle complaints for those that subscribe to their services.
  • NHS Resolution: This is an arms-length body of the Department of Health and Social Care. They provide guidance to the NHS on resolving concerns or disputes in a fair manner.
  • General Medical Council (GMC): The GMC are an independent regulator for doctors in the UK. You can raise a concern about a doctor to them and they may investigate.

How We Can Help You Make A Complaint

You have the right to complain about the actions of a healthcare organisation or negligent doctor. You may also have the right to claim compensation if you meet the criteria for medical negligence claims.

To learn more about how to make a complaint about medical negligence, including incidents of misdiagnosis, call our team. They can answer any queries or concerns you have about the complaints process, and could help you submit your complaint to the relevant party. They can also assess your eligibility to seek compensation for a misdiagnosis.

Can I Take Legal Action If My Injury Or Illness Was Misdiagnosed?

Medical negligence, sometimes referred to as clinical negligence, is when medical professionals fail in their duty of care. This duty is centred on ensuring the provision of the correct standard of care and ensuring patients do not come to unnecessary or avoidable harm during the course of their treatment. 

Whilst medical professionals have a duty to provide care that meets the correct standard, the ways in which they may be expected to uphold their duty of care can differ depending on the field of medicine they work in. For example, the GMC have published ethical guidance on what constitutes good medical practice, whilst the duty of care for nurses is set out by the Royal College of Nursing.

The criteria that need to be met to have a valid medical negligence claim are: 

  1. A medical professional owed you a duty of care.
  2. There was a breach of this duty.
  3. You suffered unnecessary or avoidable harm as a result of this breach.

Time Limitations

In most cases, the time limit for starting a medical negligence claim, as set out in the Limitation Act 1980, is 3 years from the date of the medical negligence or the date of knowledge. The latter is where you should have connected the harm you experienced to a medical professional providing a level of care that was substandard.

Circumstances where exceptions to the general limitation can apply are:

  • Since children cannot claim for themselves, the 3 years are instead counted from the day they turn 18.
  • Persons who do not possess sufficient mental capacity to direct their own claim will have the limitation period halted altogether.

In both of these situations, a litigation friend can be appointed to act on their behalf during the claims process.

For further guidance on when you could be eligible to make a medical misdiagnosis claim, and how long you have to do so, please contact an advisor on the number above.

Examples Of Medical Misdiagnosis

Misdiagnosis can occur in a number of different ways. We have included some possible examples of how a misdiagnosis could occur and the effects this could have on you below.

  • A medical professional failed to correctly interpret an X-ray of your ankle, meaning your fracture was misdiagnosed as a sprain. This led to a progressive worsening of your condition, necessitating surgery to repair the fracture.
  • You have a video examination with a GP exhibiting symptoms of one condition but are misdiagnosed with a different condition and are therefore prescribed the wrong medication.
  • A scan organised to diagnose lung cancer was carried out incorrectly, resulting in you not being referred for further testing and your cancer going undiagnosed. This cancer misdiagnosis meant it was detected much later, by which time it had spread to other organs. 

In a case of misdiagnosis, your medical records can help with proving medical negligence. You have the right to request copies of your GP health records.

If you are unsure how to gather evidence in support of your case, you can call our team. They may be able to connect you with a solicitor from our panel, if they find your case is valid.

Additionally, they can offer further guidance on how to make a complaint about a misdiagnosis.

What Evidence Can Be Used In A Misdiagnosis Claim?

Having looked at how to make a complaint about misdiagnosis, we need to explore the evidence that can be used in a misdiagnosis claim. Proving what occurred is an important part of both making a complaint and claiming compensation so making sure you have the right evidence is a priority.

We have provided a few examples of evidence you could use for a claim after a misdiagnosis complaint here:

  • Your medical records will be of great significance. Documents such as your scans, test results, x-rays, surgical reports and others can all be used to show that a misdiagnosis occurred, and that you underwent additional treatment because of this.
  • Proof of any financial harm you have sustained.
  • Contact information for any relevant witnesses so a statement can be taken during the claims process.
  • Findings from the Bolam test, if applicable.

The Bolam test involves medical professionals from the relevant field assessing the level of care you received and determining if the correct standards were met. While not used in every instance of medical negligence, any findings from the test can be used as part of your evidence.

To find out more about collecting evidence, or to ask one of our advisors, “can I complain if I was misdiagnosed,” talk to our team today using the contact information provided below.

What Payout Could You Claim For Misdiagnosis?

A successful compensation payout can be made up of two heads of claim. The first of these, known as general damages, is awarded for the pain and suffering you have sustained because of the harm caused by medical negligence.

We have used a selection of entries from the Judicial College Guidelines (JCG) to create the following table. The JCG is a document that contains guideline award brackets. A solicitor could use these in conjunction with any medical evidence to calculate the value of the harm suffered.

Compensation Table

Since medical negligence claims are assessed individually, this information has been included for guidance purposes only.

HarmSeverityGuideline Amount
Multiple instances of harm plus special damagesVery SeriousUp to £500,000 or more
Bowels Total Loss of Function (b)Up to £183,190
Bladder Complete Loss of Function (b)Up to £171,680
Seriously Impaired Control (c)£78,080 to £97,540
Lung DiseaseSignificant and Worsening Function (c)£66,890 to £85,460
KidneySignificant Risk of UTI (b)Up to £78,080
Loss of One Kidney (c)£37,550 to £54,760
Wrist InjuriesLess Severe (c)£15,370 to £29,900
Ankle Injuries Moderate (c)£16,770 to £32,450

Special Damages

Special damages, the other of the two heads of claim, can be awarded for any financial losses you incur as a result of the harm you sustained due to medical negligence. Some possible examples include:

  • Travel expenses
  • Childcare costs
  • The cost of domestic care and assistance
  • The cost of home alterations
  • Loss of income

Remember to keep any documentation, such as invoices, payslips, receipts, that illustrate your financial losses.

For a free personalised estimate of what you could potentially receive in compensation following a successful misdiagnosis claim, call our team.

Check If You Could Make A No Win No Fee Misdiagnosis Negligence Claim

Provided you meet the eligibility criteria for starting a medical negligence claim, one of our solicitors may be able to take your case. You could be offered a Conditional Fee Agreement (CFA), a type of No Win No Fee contract. There are generally no upfront fees, nor any fees as your claim progresses for the solicitor’s services under a CFA. You will also not have to pay the solicitor for their work in the event your claim is unsuccessful.

You will receive a compensation payout following the success of a claim. The solicitor will take a success fee as a percentage of your compensation. The percentage a solicitor can take as their success fee is legally capped and is agreed upon before your claim commences, so you will keep most of your compensation.

For more information on how to make a complaint about misdiagnosis and potentially start a compensation claim, you can speak to our team via:

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Learn More About How To Make A Complaint About Misdiagnosis

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Thank you for taking the time to read our guide on how to make a complaint about misdiagnosis. Our advisors are on hand to address your queries and concerns about the procedure you may need to follow. They can also provide more information about potentially starting a medical negligence claim.

Written by Clark

Edited by Mitchell

Meet The Team

  • Patrick Mallon legal expert author

    Patrick Mallon (BA, PgDl) is a Grade A personal injury solicitor and head of our EL/PL department, which handles accidents at work and public liability claims, such as slips, trips and falls. He qualified in 2005 and has over 20 years of experience. Patrick is an expert No Win No Fee lawyer and well-known for his successful case, Billie Mae Smith v McDonalds. You can learn all about Patrick, his qualifications and his experience as a solicitor here. Get in touch today for free to see how Patrick and the team can help you.

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