How to Make a Medical Negligence Claim in NSW

If you are reading this because something went wrong with your medical care, you are not alone. The realisation that a doctor, surgeon, hospital, or specialist may have caused you harm is unsettling on every level — physically, emotionally, and financially. You may be questioning what happened, replaying conversations with clinicians, or wondering whether you are overreacting. That uncertainty is normal. Medical negligence is rarely obvious from the start, and the people who experience it are almost never legal experts.

This guide is written for people in New South Wales who suspect they may have a claim. It explains how medical negligence law works in NSW, what you need to prove, the time limits that apply, and the kinds of compensation that may be available. Medical negligence law is governed at a state level in Australia, so the rules in NSW are different from those in Victoria, Western Australia, Tasmania, or the ACT. This guide focuses on NSW specifically.

Medical negligence is a specific area of personal injury law that deals with substandard care provided by health professionals. In New South Wales, claims are governed primarily by the Civil Liability Act 2002 (NSW), with elements of common law and the Health Care Liability Act 2001 (NSW) also relevant in some circumstances.

The legal standard expected of a doctor, nurse, hospital, or specialist is the standard of a reasonably competent practitioner in their field. It is important to understand what this does — and does not — mean. A poor outcome alone does not establish negligence. Some treatments simply do not work as hoped. Some risks are inherent to a procedure. The law recognises this.

What matters is whether the care fell below the accepted standard of practice. Three concepts often get confused, so it is worth separating them clearly:

• A poor outcome — a result that is disappointing or harmful, but where the treatment itself was reasonable and competent. This is not negligence on its own.
• A known complication — an adverse event that is a recognised risk of a procedure, where the patient was properly informed and the care provided met the expected standard. This is also not, by itself, negligence.
• Negligent care — where the practitioner failed to meet the standard of a reasonably competent peer, and that failure caused harm. This is what gives rise to a claim.

Many people who have been harmed by negligent care second-guess themselves. They wonder whether they are being unreasonable, or whether the outcome was simply bad luck. Speaking to a medical negligence lawyer is often the first time these concerns are tested against the law and against independent medical evidence.

Common Medical Negligence Examples

Medical negligence can take many forms. Some of the most common types of claims we see in NSW include:

1. Misdiagnosis or delayed diagnosis — including missed cancer, delayed identification of cardiac events, infections, or fractures. Read more about misdiagnosis claims.
2. Surgical errors — wrong-site surgery, retained instruments, nerve damage, or procedures performed without proper indication. See our overview of surgical error claims.
3. Medication errors — incorrect medication, wrong dosage, dangerous interactions, or failure to review prescriptions.
4. Birth injuries — preventable harm to mother or baby during pregnancy, labour, or delivery, including failure to recognise foetal distress. Learn more about birth injury claims.
5. Failure to refer — when a GP or treating clinician should have referred you to a specialist and did not.
6. Failure to monitor — inadequate post-operative care, missed observations, or failure to act on test results.
7. Failure to warn or absence of informed consent — not advising you of material risks before a procedure. See our guide on failure to warn.
8. Dental negligence — including nerve injury, failed implants, undiagnosed infections, or unnecessary procedures. Read more on dental negligence claims.
9. Cosmetic surgery negligence — botched cosmetic procedures, undisclosed risks, or substandard aftercare. See cosmetic surgery negligence for more information.

What Does “Failure to Warn” and “Informed Consent” Mean?

These two terms come up often in medical negligence claims, and they are widely misunderstood. Patients sometimes assume that because they signed a consent form, they cannot make a claim. That is not correct.

Informed consent goes beyond a signature. Under NSW law, a doctor has a duty to warn you of any material risk associated with a proposed treatment. A risk is considered material if a reasonable person in your position would attach significance to it, or if the doctor knew (or ought to have known) that you, specifically, would attach significance to it.

Failure to warn refers to the situation where this duty is breached — for example, where a surgeon does not tell you about a known complication that, had you known about it, would have changed your decision. Consent forms do not excuse negligent care, and they do not waive your right to be properly informed. If you went into a procedure without understanding the risks, and one of those risks materialised, you may still have a claim. Read more about failure to warn claims.

A medical negligence claim can be brought by the injured patient, by a family member or dependant in some circumstances (for example, where the patient has died or lacks capacity), or by the estate of a deceased patient where negligent care contributed to their death.

To succeed in a claim in NSW, four legal elements need to be established:

1. Duty of care — the practitioner or institution owed you a duty to provide reasonable care.
2. Breach — the care provided fell below the standard of a reasonably competent peer.
3. Causation — the breach caused or materially contributed to your injury.
4. Harm or damage — you suffered an injury, loss, or damage as a result.

What needs to be proven?

In plain terms, you need to show that a competent practitioner in the same field, treating a similar patient, would have done something differently — and that this difference would have prevented or reduced your injury. This is not something most patients can establish on their own.

Under section 5O of the Civil Liability Act 2002 (NSW), a practitioner generally has a defence if their conduct was widely accepted by peer professional opinion as competent practice. This is sometimes called the “peer professional opinion” defence. It means medical negligence claims often turn on independent expert evidence — opinions from specialists in the same field who can speak to whether the care was acceptable.

This is also why so many patients feel uncertain. You do not have access to medical expertise yourself, and the practitioner you trusted is the one whose conduct is in question. Independent medical opinions, organised by your lawyer, are how the law tests what really happened.

Evidence That Can Support a Claim

Once you understand what needs to be proven, the next question is how. Strong medical negligence claims are built on documentation. The kinds of evidence typically required include:

• Medical records — including GP notes, specialist consultations, referral letters, and diagnostic reports.
• Hospital notes — admission records, observation charts, operating reports, anaesthetic records, and discharge summaries.
• Test results and imaging — pathology, scans, and any reports that document your condition before and after the relevant care.
• Referral letters — communications between practitioners that show what was known, when, and what action was taken.
• Bills and receipts — costs for treatment, medications, rehabilitation, and out-of-pocket expenses.
• Employment and income records — to demonstrate financial loss caused by the injury.
• Care and assistance needs — evidence of help required from family members or paid carers.

If you do not currently have these records, you do not need to gather them yourself. A medical negligence lawyer can request them on your behalf — including from hospitals, GPs, specialists, and other treating providers.

Common Misconceptions About Eligibility

Many people self-disqualify from making a claim because they make assumptions that are not legally correct. The most common are:

• “I signed a consent form, so I can’t claim.” Consent forms do not protect against negligent care or failure to warn.
• “My doctor is a good person — I don’t want to ruin them.” Medical negligence claims are typically met from professional indemnity insurance, not from individual practitioners personally.
• “It’s been too long.” Time limits in NSW have important exceptions, including a discoverability rule that may extend the period in which you can claim.
• “I can’t afford a lawyer.” LHD offers no win, no fee for medical negligence claims, meaning there is no upfront cost.
• “It might just be bad luck.” That is exactly what an independent medical opinion is designed to determine. You are not expected to know.

Liability in a medical negligence claim depends on who provided the care, where it was provided, and how the relevant systems and supervision operated. Multiple parties can be liable in the same matter.

• Doctors — including GPs, surgeons, and specialists in private practice. These claims are usually directed at the doctor’s medical indemnity insurer.
• Nurses and midwives — claims often involve hospital employers under the principle of vicarious liability.
• Hospitals — both public and private hospitals owe a non-delegable duty of care for the safety of patients in their facilities. See more on hospital negligence claims.
• Specialists and clinics — including diagnostic centres, day surgeries, and specialist private practices.

Can You Sue a Hospital for Negligence in NSW?

Yes. Hospitals in NSW can be sued in their own right where they have failed to provide adequate systems, staffing, or supervision. The path of a claim differs slightly between public and private hospitals.

In public hospitals, the relevant Local Health District is generally the entity that responds to claims, with the State of New South Wales standing behind it. In private hospitals, the operator (often a corporate entity) holds its own indemnity. Where a doctor is a visiting medical officer, responsibility may sit with the doctor’s own insurer rather than the hospital. A medical negligence lawyer will work out who the correct defendants are early in the process so the claim is directed properly.

Time limits in NSW medical negligence cases are set out in the Limitation Act 1969 (NSW). They are strict, but not as straightforward as they look — and they include important exceptions.

The general rule is that you have 3 years to commence proceedings. The clock starts from the date you knew, or ought to have known, the following three things: that the injury occurred, that it was caused by the act or omission of another person, and that the injury was sufficiently serious to justify bringing a claim. This is known as the discoverability rule and is critical in medical negligence, where the link between treatment and harm often only becomes clear months or years later.

Separately, NSW has a long-stop limitation of 12 years from the act or omission that caused the harm. After that, a claim is generally barred even if the injury was not discoverable within the period.

There are exceptions:

• Minors — for children injured by medical negligence (including birth injuries), special rules apply, and the limitation period typically does not begin to run in the same way as for adults. Parents can bring claims on a child’s behalf, and a court can extend time in some circumstances.
• Disability — where a person lacks legal capacity due to mental incapacity or other disability, time limits may be extended.
• Delayed recovery or diagnosis — the discoverability rule was designed for exactly these situations. The fact that you only recently learned what happened does not automatically mean you are out of time.

If you think your situation may be close to a deadline, the safest step is to get advice quickly. Even a short phone call can clarify where you stand.

Money does not undo what has happened. But compensation is the law’s way of recognising the impact of medical negligence — financial, physical, and personal — and of helping you rebuild what you can.

Compensation in NSW medical negligence claims is divided into several categories. The amount you may be entitled to depends on the severity of your injury, the impact on your life, your age, your earnings, and the evidence supporting each head of damage. There is also a threshold under section 16 of the Civil Liability Act 2002 (NSW): non-economic loss (pain and suffering) is only payable where the injury reaches at least 15% of a “most extreme case” — a benchmark assessed on medical evidence.

In claims involving long-term or catastrophic injury — such as birth injuries or severe surgical complications — compensation can include lifetime care plans, future medical needs, and lost earning capacity over many decades. These are complex calculations, and your lawyer will work with medico-legal experts to make sure the figures reflect your actual needs.

Some matters can be navigated alone. Medical negligence is rarely one of them. The combination of complex medical evidence, professional defendants with experienced insurers, strict legal tests, and time-sensitive procedures makes self-representation extremely difficult — even for people who are otherwise highly capable.

Speaking to a lawyer early helps in several practical ways:

• Records can be requested promptly and preserved before they become harder to obtain.
• Independent experts can be engaged in the appropriate field to assess the merits of your claim.
• Negotiations and correspondence with hospitals or insurers are handled professionally on your behalf.
• Time limits are tracked carefully so deadlines are not missed.
• You are kept informed throughout — without being expected to understand legal procedure unaided.

LHD Lawyers’ Sydney medical negligence team assists clients across NSW with claims against doctors, hospitals, specialists, and clinics. We offer no win, no fee for medical negligence claims, meaning there is no upfront cost to seeking advice. We will explain any legal costs clearly before you proceed.

Every claim is different, and having the right support locally can make a real difference. Our teams across NSW are here to help:

• Sydney
• Coffs Harbour
• Dubbo
• Erina
• Maitland
• Newcastle
• Port Macquarie
• Taree
• Tamworth