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Delay, misdiagnosis & failure to diagnose medical negligence claims

An unintentional delay is when there is sufficient information available, but it is for one reason or another overlooked

If there has been a delay in diagnosis, a misdiagnosis or a failure to diagnose and that failure has resulted in injury, you may be able to make a medical negligent claim for compensation.

What does delay mean?

Example: your test results show that you have cancer but your does not act on the information contained in the test and you suffer as a result of the delay.

What does misdiagnosis mean?

When an incorrect diagnosis was made before the correct diagnosis. Misdiagnosis can occur in one of three ways

  1. Underdiagnosing – when the given diagnosis is less serious than the correct diagnosis
  2. Over diagnosing – when the given diagnosis is worse than the correct diagnosis
  3. Incorrect diagnosing – completely wrong diagnosis

Example: you attend your doctor because you have a persistent sore throat, your doctor performs a check up and tells you that you simply have a sore throat. You like in pain for some years and subsequently find out that you have throat cancer, that is now too advanced for treatment.

How do I prove delay, misdiagnosis or a failure to diagnose?

The first step in establishing your claim for delay, misdiagnosis, or failure to diagnose is to look at the clinical notes.

This is because most diagnostic errors are evident from the treatment provider or medical professions notes.

What we look for:

  • The history taken – is it detailed or brief?
  • Legibility of the notes – if hand written and illegible this could be a source of confusion which leads to error
  • The systems in place – Are they complex and confusing?
  • Shift hand over – Errors or misrepresentations at hand over resulting in a different course of action
  • Lack of definite diagnosis
  • Whether there are any referrals
  • Numerous diagnoses
  • Extensive pathology, radiological or diagnostic testing such as scans
  • Where the notes come from
    • Emergency department
    • Hospitals
    • General practitioner
  • Assessment
  • Plans
  • Follow ups with the patients

How do I win my case?

You will need to prove using evidence that the doctor failed in their duty and had they had exercised due care and skill there would not have been a delay, misdiagnosis or failure to diagnose.

The law surrounding delay, misdiagnosis or failure to diagnose is complicated. For this reason, Garling & Co Lawyers offers a no obligation free case assessment so that you can better understand your rights and the prospect of success in your medical negligence / medical malpractice claim.

Thank you for reading our article. We hope it helped your understanding of Medical Negligence. For more information on timelines see our article on How long does a medical negligence claim take here. Should you have any further questions, please contact our office at (02) 8329 9500 or complete a free case assessment today.

Garling & Co Lawyers

Matthew Garling

Matthew Garling is an Accredited Specialist in Personal Injury Law approved by New South Wales Law Society. He is admitted to practice in the Supreme Court of NSW and the High Court of Australia. Matthew is also a member of...
steve J.
00:38 29 Sep 25
Brilliant Service and I am always kept well informed. Definitely recommend this law firm to anyone seeking compensation lawyers. I really appreciate and thank Matthew and his wonderful team for their... incredible and sincere hard work they have put in for my case in the last couple of years. My family and I are blessed and very satisfied with our outcome. God Bless you Matthew Garling and your team.read more
Mark W.
10:50 17 Sep 25
Garling and Co. are an exceptional outfit. Matthew Garling is a talented lawyer and supported and surrounded by a great team of people including Allison Luck and others. What made Matthew... particularly impressive with my case were his ability to communicate complex legal processes and simplify options for the next steps, his genuine interest in the law, and his passion to seek appropriate compensation on my behalf. He was not ready to settle my case until I was ready to settle the case. I am very grateful to have had Garling and Co. 'in my corner' and would not hesitate to recommend this business to others.read more
Elyce
22:22 06 Sep 25
I never imagined this chapter would close, but it finally has.I cannot thank Joelle enough for the incredible support she gave me during one of the most challenging times in my life.Her... professionalism and genuine care throughout my claim process exceeded all my expectations.Whenever I contacted Garling and Co to speak with Joelle, I was assisted by Lynn. She was always polite, clear, and concise, and consistently showed empathy whenever I called or emailed.read more
Anonymous 1.
22:02 04 Sep 25
I was referred to Garling & Co Lawyers, after previously retaining another law firm who failed to progress my matter for a period verging on three years.This was extremely frustrating and damaging,... causing me a lot of unnecessary stress and unreasonable delays. After my first conference with Matthew, he understood the challenges that I had faced and that I wanted to resolve my matter with the defendant reasonably and in a timely manner.My matter was resolved at mediation and during the process, Matthew and Dallas Morgan (barrister), professionally communicated the procedure to me and they negotiated a reasonable settlement, that I was comfortable in accepting.Thank you to Matthew and Allison for being patient with me during the most challenging time of my life. I can now move on with my life and heal. Had I not retained Garling & Co Lawyers, I highly doubt my matter would ever have been resolved.read more
Sammy R.
01:07 04 Sep 25
Garling and Co have been the best lawyers. Kerry and Matthew have worked and been working on my case for a long time now. They have worked so hard and fought for my case every step of the way. They... are highly experienced in what they do, and are compassionate at the same time. I highly recommend this firm. My life changed in an instant when I was hit by a car, I will be forever grateful for the help they've given me. 10/10read more
Donelle L.
20:37 11 Aug 25
So very happy with the service Garling has provided with both of my claims from the start to the end cannot thank them enough Mathew and the team are the best
Rachel J
01:46 09 Aug 25
The level of service that Garling & Co provides is truely unmatched.Thank you to both Matthew and Allison for your professionalism & dedication throughout my journey of being a client.Matthew... provided me with genuine, factual and straightforward advice throughout the process and this made things easy to understand and put any uncertainty I had to rest. A complicated process ran smoothly and I always felt supported, knew where things were at and that I was in good hands.The communication at Garling & Co is exceptional. Every question I had, whether by email or phone was responded to in a timely manner and at every stage I was confident Matthew would be guiding me through the next steps - which he did, until my case was finalised.Thank you for upholding clients dignity and respect, these are values people like me need in such critical times of their lives. As a client, it is clear these values shine through. You provided me with a safe space where I was able to focus on my day to day challenges caused by my injuries, while you took care of the legal aspect on my behalf.Lastly, I’m grateful for your commitment to the work that you do and the care that you provide to people who find themselves in unfortunate circumstances beyond their control. And thank you so much for the very positive outcome that I received.read more
Ros P.
07:12 29 Jun 25
Staff polite, clear and concise. Explained well in a logistical manner. Overall a great service.
Chris G
01:25 23 Jun 25
My experience with Garling & Co has been a positive one throughout the claims process. Matthew, Emily, Emma and Rebecca have been responsive, understanding and supportive during my ongoing recovery.
Sandra C.
04:11 16 Jun 25
Garling & Co Lawyers were professional from start to finish. They made me feel like I was as important to them as all their clients. Emma Perkins and her team went over and above in all aspects to... exceed my expectations. Highly recommended.read more
READ ALL TESTIMONIALS

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steve J.
00:38 29 Sep 25
Brilliant Service and I am always kept well informed. Definitely recommend this law firm to anyone seeking compensation lawyers. I really appreciate and thank Matthew and his wonderful team for their... incredible and sincere hard work they have put in for my case in the last couple of years. My family and I are blessed and very satisfied with our outcome. God Bless you Matthew Garling and your team.read more
Mark W.
10:50 17 Sep 25
Garling and Co. are an exceptional outfit. Matthew Garling is a talented lawyer and supported and surrounded by a great team of people including Allison Luck and others. What made Matthew... particularly impressive with my case were his ability to communicate complex legal processes and simplify options for the next steps, his genuine interest in the law, and his passion to seek appropriate compensation on my behalf. He was not ready to settle my case until I was ready to settle the case. I am very grateful to have had Garling and Co. 'in my corner' and would not hesitate to recommend this business to others.read more
Elyce
22:22 06 Sep 25
I never imagined this chapter would close, but it finally has.I cannot thank Joelle enough for the incredible support she gave me during one of the most challenging times in my life.Her... professionalism and genuine care throughout my claim process exceeded all my expectations.Whenever I contacted Garling and Co to speak with Joelle, I was assisted by Lynn. She was always polite, clear, and concise, and consistently showed empathy whenever I called or emailed.read more
Anonymous 1.
22:02 04 Sep 25
I was referred to Garling & Co Lawyers, after previously retaining another law firm who failed to progress my matter for a period verging on three years.This was extremely frustrating and damaging,... causing me a lot of unnecessary stress and unreasonable delays. After my first conference with Matthew, he understood the challenges that I had faced and that I wanted to resolve my matter with the defendant reasonably and in a timely manner.My matter was resolved at mediation and during the process, Matthew and Dallas Morgan (barrister), professionally communicated the procedure to me and they negotiated a reasonable settlement, that I was comfortable in accepting.Thank you to Matthew and Allison for being patient with me during the most challenging time of my life. I can now move on with my life and heal. Had I not retained Garling & Co Lawyers, I highly doubt my matter would ever have been resolved.read more
Sammy R.
01:07 04 Sep 25
Garling and Co have been the best lawyers. Kerry and Matthew have worked and been working on my case for a long time now. They have worked so hard and fought for my case every step of the way. They... are highly experienced in what they do, and are compassionate at the same time. I highly recommend this firm. My life changed in an instant when I was hit by a car, I will be forever grateful for the help they've given me. 10/10read more
Donelle L.
20:37 11 Aug 25
So very happy with the service Garling has provided with both of my claims from the start to the end cannot thank them enough Mathew and the team are the best
Rachel J
01:46 09 Aug 25
The level of service that Garling & Co provides is truely unmatched.Thank you to both Matthew and Allison for your professionalism & dedication throughout my journey of being a client.Matthew... provided me with genuine, factual and straightforward advice throughout the process and this made things easy to understand and put any uncertainty I had to rest. A complicated process ran smoothly and I always felt supported, knew where things were at and that I was in good hands.The communication at Garling & Co is exceptional. Every question I had, whether by email or phone was responded to in a timely manner and at every stage I was confident Matthew would be guiding me through the next steps - which he did, until my case was finalised.Thank you for upholding clients dignity and respect, these are values people like me need in such critical times of their lives. As a client, it is clear these values shine through. You provided me with a safe space where I was able to focus on my day to day challenges caused by my injuries, while you took care of the legal aspect on my behalf.Lastly, I’m grateful for your commitment to the work that you do and the care that you provide to people who find themselves in unfortunate circumstances beyond their control. And thank you so much for the very positive outcome that I received.read more
Ros P.
07:12 29 Jun 25
Staff polite, clear and concise. Explained well in a logistical manner. Overall a great service.
Chris G
01:25 23 Jun 25
My experience with Garling & Co has been a positive one throughout the claims process. Matthew, Emily, Emma and Rebecca have been responsive, understanding and supportive during my ongoing recovery.
Sandra C.
04:11 16 Jun 25
Garling & Co Lawyers were professional from start to finish. They made me feel like I was as important to them as all their clients. Emma Perkins and her team went over and above in all aspects to... exceed my expectations. Highly recommended.read more
University of Technology, Sydney
Member of Law Society of New South Wales
Law Society of NSW Specialist Accreditation
University of Sydney
Legal Profession Admission Board of New South Wales
The law society of nsw professional standards scheme logo.
University of Technology, Sydney
Member of Law Society of New South Wales
Law Society of NSW Specialist Accreditation
University of Sydney
Legal Profession Admission Board of New South Wales
The law society of nsw professional standards scheme logo.
Google Rating
4.9