How Long Do You Have to Make a Medical Negligence Claim in Ireland?

Finding out that an injury may have been caused by medical negligence often happens well after the treatment itself. You may have spent months dealing with unexplained symptoms, received a different diagnosis from another doctor, or learned later that an earlier scan, test result or warning sign should have led to different care. This creates an urgent question: how long do you have to make a medical negligence claim in Ireland? The general rule is that a personal injury action arising from medical negligence must be brought within two years from the date the cause of action accrued or the claimant’s date of knowledge, if that is later. The treatment date therefore does not always decide when the limitation period begins. Special rules can also affect claims involving children, people under a statutory disability and deaths caused by alleged medical negligence. Because missing the correct deadline can prevent a claim from proceeding, the safest approach is to establish the relevant dates early rather than counting two years from the medical appointment yourself.

What Is the Time Limit for a Medical Negligence Claim in Ireland?

For most adult medical negligence claims in Ireland, the current limitation period is two years. Section 3 of the Statute of Limitations (Amendment) Act 1991, as amended by section 7 of the Civil Liability and Courts Act 2004, provides that a personal injury action based on negligence, nuisance or breach of duty cannot normally be brought after two years from the date the cause of action accrued or the injured person’s date of knowledge, if later. The Civil Liability and Courts Act 2004 reduced the previous three-year period to two years with effect from 31 March 2005.

You may sometimes see the deadline described as “two years less one day.” The statutory wording itself refers to the expiration of two years. Rather than relying on shorthand phrases or attempting to calculate the final day without legal advice, the important issue is to identify the correct starting date and make sure the appropriate legal proceedings are commenced in time.

Situation	General position
Adult who is immediately aware of the injury and relevant facts	Usually two years from the relevant accrual or date-of-knowledge point
Injury or its connection with treatment becomes apparent later	A later date of knowledge may be relevant
Claim involving a child	Special disability rules can apply
Claimant under a statutory disability	The limitation period may operate differently
Death allegedly caused by medical negligence	Separate fatal-injury limitation provisions apply
Ordinary IRB personal injury procedure	Medical negligence is treated differently

A limitation period is more than an administrative target. If the applicable period expires, a defendant may raise a limitation defence and argue that the claim is statute-barred. This is why the starting date can be just as important as the length of the time limit itself.

When Does the Two-Year Period Start? Understanding the Date of Knowledge

The two-year period does not automatically start on the day a doctor made an error, a test was misread or medical treatment took place. Irish law recognises that some injuries and their connection with medical care are discovered later. Section 2 of the 1991 Act therefore uses the concept of the claimant’s date of knowledge. For limitation purposes, that can be later than the date of treatment.

The statutory test is more detailed than simply asking, “When did you realise a doctor had been negligent?” The relevant facts include knowledge that an injury occurred, that the injury was significant, that it was attributable wholly or partly to the act or omission complained of, and the identity of the defendant. Where the act or omission is alleged to have been committed by someone other than the defendant, the legislation also addresses knowledge of that person’s identity and the additional facts supporting the action against the defendant. Importantly, the Act states that knowledge of whether the conduct legally amounts to negligence or breach of duty is irrelevant to this part of the test.

Date of Treatment vs Date of Knowledge

The difference is easiest to see through examples. Suppose a patient undergoes an operation and immediately suffers an obvious injury that is clearly connected with what occurred during surgery. The relevant knowledge may arise very close to the treatment date. A different situation can arise where a patient continues to experience symptoms after treatment but does not know why. Months later, further imaging or a second medical opinion may identify an injury and information connecting it with an earlier act or omission. In that situation, the date of knowledge may require a much closer examination.

Delayed diagnosis cases can create the same issue. A person may have attended a hospital or GP years earlier without knowing that an abnormal result or warning sign had allegedly been missed. A later diagnosis may reveal both the injury and facts that raise questions about earlier medical care. That does not mean every delayed diagnosis automatically gives a later limitation date; it means the factual history must be examined before the deadline can be identified.

This is particularly relevant in areas such as cancer misdiagnosis, delayed stroke diagnosis and some surgical injuries, which form part of the medical negligence work handled by Cian O’Carroll Solicitors. The question is not simply when the treatment occurred, but when the claimant had the knowledge required by the legislation.

Actual Knowledge and What a Claimant Could Reasonably Have Known

Date of knowledge is not restricted to facts a claimant expressly remembers learning on a particular day. Section 2 also includes knowledge that the person might reasonably have been expected to acquire from facts available to them or through medical or other appropriate expert advice that it was reasonable to seek. This is sometimes described as constructive knowledge or reasonable knowledge.

There is an important safeguard within the same provision. A person should not be fixed with knowledge of a fact that could only be discovered with expert advice while they have taken all reasonable steps to obtain and, where appropriate, act on that advice. The Act also provides that an injured person is not fixed with knowledge they failed to acquire because of the injury itself. These details matter because date of knowledge often depends on the actual sequence of appointments, symptoms, diagnoses, letters, medical records and advice received rather than one isolated event.

For example, persistent pain after an operation does not automatically prove that the patient knew there had been negligence. At the same time, a person cannot necessarily postpone the limitation period simply by avoiding reasonable investigation of information that has become available. The correct date depends on what was known, what could reasonably have been discovered, and when.

Does an Expert Medical Report Determine the Date of Knowledge?

An independent medical expert often plays an important part in investigating a medical negligence claim, particularly when assessing whether the care provided fell below an acceptable standard and whether that failure caused the patient’s injury. However, it is unsafe to assume that the limitation period automatically begins only when a formal expert report is received.

The legislation distinguishes between knowledge of relevant facts and knowledge of the legal conclusion that those facts amount to negligence. At the same time, it recognises that some facts may only be discoverable with appropriate expert advice. This means an expert report can be important to the factual assessment without being a universal starting point for the limitation period.

If there is uncertainty about when relevant knowledge arose, a medical negligence solicitor can review the treatment chronology, diagnoses, correspondence, medical records and advice already received. This is often more reliable than choosing the date of an expert report, diagnosis or hospital appointment in isolation.

How Can the Time Limit Differ for Children, Disability and Fatal Claims?

The two-year rule is the starting point for most adult claims, but Irish limitation legislation contains specific provisions for people under a statutory disability and for fatal injury actions. These rules exist because the person entitled to bring a claim may not have been in a position to do so under the ordinary timetable. They should be applied carefully because the facts of the individual claim still matter.

Medical Negligence Claims Involving Children

A child is treated differently for limitation purposes. Section 5 of the 1991 Act provides an extension where the person entitled to bring the action was under a disability when the right of action accrued or at their date of knowledge. Under the Statute of Limitations 1957, minority is a form of disability for these purposes, while the Age of Majority Act 1985 generally provides for full age at 18. The practical effect is that a child will generally have two years after ceasing to be under that disability, commonly meaning until the age of 20, subject to the facts and statutory rules applying to the particular claim.

Parents do not have to wait until a child reaches 18 before legal action can be taken. Irish court rules allow a minor to bring proceedings through a next friend, usually a parent or guardian acting on the child’s behalf. Settlements involving a person under 18 also require court approval.

This can be especially important in birth injury or neonatal negligence cases. Even where the limitation period is suspended during childhood, early investigation may make it easier to preserve records, obtain medical evidence and understand what happened. Cian O’Carroll Solicitors‘ medical negligence work includes both neonatal care injuries and birth-related injury claims.

Where the Claimant Is Under a Statutory Disability

Irish limitation legislation also recognises disability other than minority. The Statute of Limitations 1957 uses the older statutory expression “of unsound mind” in its definition of a person under a disability. Section 5 of the 1991 Act provides that where the person with the right to bring a relevant action was under a disability when the right accrued or at the date of knowledge, the action may generally be brought within two years from when that disability ceased or the person died, whichever occurred first, subject to the other statutory provisions.

The statutory wording should not be treated as meaning that every illness, cognitive difficulty or period of incapacity automatically extends a deadline. Whether the disability provisions apply requires a legal assessment of the person’s circumstances and the legislation. Anyone relying on capacity or disability as affecting a limitation date should therefore have the position checked rather than assuming the ordinary two-year period has been suspended.

Fatal Medical Negligence Claims

Different rules apply where the alleged medical negligence caused a person’s death. Section 6 of the 1991 Act provides that a fatal injury action under section 48(1) of the Civil Liability Act 1961 generally cannot be brought after two years from the date of death or the date of knowledge of the person for whose benefit the action is brought, whichever is later. Where there is more than one beneficiary, the date-of-knowledge test is applied separately to each.

This means a fatal medical negligence claim should not simply be treated as if the deceased patient’s ordinary personal injury deadline continued unchanged. The date of death, the knowledge of relevant dependants and other statutory provisions can affect the analysis. Families concerned that a death may have resulted from delayed diagnosis, medication error, surgical care or another medical failure should obtain advice on the relevant dates before assuming the claim is either in time or out of time.

Does the Injuries Resolution Board Affect a Medical Negligence Claim Deadline?

Medical negligence claims are treated differently from ordinary accident claims in the Injuries Resolution Board process. The Courts Service explains that the usual requirement to obtain PIAB authorisation before issuing a personal injury summons does not apply in the same way to medical negligence claims. The Courts Service’s 2025 annual report also states directly that the Injuries Resolution Board does not deal with clinical negligence claims.

This distinction matters because information about general Irish personal injury claims can be misleading if applied to medical negligence without checking the exception. In an ordinary claim that falls within the Board’s jurisdiction, legislation contains rules that can exclude certain periods connected with a Board application when calculating the limitation period. A person considering a medical negligence claim should not assume that submitting something to the Injuries Resolution Board will pause or protect their medical negligence deadline.

The safer approach is to identify the claim correctly from the outset and obtain advice on the limitation date that applies to the medical negligence proceedings themselves.

How Do You Protect a Medical Negligence Claim Before the Time Limit Expires?

Knowing that a possible medical error occurred is different from legally protecting the right to bring a claim. Medical negligence cases often require medical records, specialist evidence and detailed investigation, but carrying out that investigation should not be confused with commencing legal proceedings. The limitation period continues to matter while those steps are being taken.

Starting Legal Proceedings

A claim must be commenced using the appropriate legal procedure within the applicable limitation period. Under the Civil Liability and Courts Act 2004, personal injury proceedings can fall within the jurisdiction of the High Court, Circuit Court or District Court depending on the case; it is therefore incorrect to suggest that every medical negligence claim must automatically be started in the High Court. A personal injuries summons is the originating document used for personal injury proceedings in the relevant court procedure.

Many substantial medical negligence cases are heard in the High Court, but the important limitation point for a claimant is broader: appropriate legal proceedings must be commenced in time. Which court, defendants and documents are appropriate should be determined from the circumstances of the claim.

What Does Not Automatically Protect the Deadline?

A number of useful steps may help investigate what happened, but they should not be assumed to stop the limitation period or amount to commencement of court proceedings. These include:

• contacting a solicitor for an initial discussion;
• requesting hospital or GP medical records;
• waiting for an independent medical expert report;
• making a complaint to a hospital or the HSE;
• making a professional complaint to the Medical Council; or
• continuing discussions with a healthcare provider.

These steps may produce important evidence, but a complaints process, records request or expert investigation is different from formally commencing a civil claim. The deadline therefore needs to be considered alongside the investigation rather than after it has finished.

Practical Steps to Take Early

If you believe an injury may be connected with negligent medical treatment, it helps to create a clear record of what happened while the details are still available. You can:

1. Write down the dates of appointments, admissions, tests and procedures.
2. Record when your symptoms began or became worse.
3. Note when you were first given information suggesting that earlier care may have caused or contributed to your injury.
4. Keep hospital letters, test results, discharge summaries and other medical correspondence.
5. Record the names of the hospitals, doctors or healthcare professionals involved.
6. Request relevant medical records where appropriate.
7. Speak to a solicitor experienced in medical negligence before relying on your own calculation of the deadline.

A solicitor investigating a possible claim will usually need to understand both the medical chronology and the legal chronology. At Cian O’Carroll Solicitors, the firm’s work is focused on medical negligence and serious personal injury, including delayed cancer diagnosis, birth injuries, neonatal care, stroke care and surgical negligence. If the limitation date is uncertain, reviewing the timeline early can help establish whether urgent legal steps may be needed.

What If the Two-Year Period Appears to Have Passed?

Do not automatically assume that a medical negligence claim is out of time simply because the medical treatment happened more than two years ago. The relevant starting point may be a later date of knowledge, particularly where the injury or its possible connection with earlier medical care was discovered later. Rules relating to childhood, statutory disability and fatal injuries may also affect the calculation.

The opposite is also important: a person should not assume that delayed diagnosis always provides extra time. Date of knowledge is a statutory test based on what the claimant actually knew and what they could reasonably have been expected to know. The issue may be disputed by a defendant, and the existence of a strong underlying allegation of negligence does not remove the limitation problem.

If the correct period has expired and no applicable rule changes the calculation, the defendant may raise the statute of limitations as a defence. This can prevent the claim from proceeding. That is why a case that appears late should be assessed before it is abandoned, while a case that appears comfortably within time should not be left until the assumed final weeks.

Is the Medical Negligence Time Limit Changing From Two Years to Three Years?

There has been understandable confusion about a possible three-year limitation period for clinical negligence claims in Ireland. Section 221 of the Legal Services Regulation Act 2015 contains provisions that would increase the limitation period for defined clinical negligence actions from two years to three years. However, those provisions have not been commenced and therefore do not replace the current two-year rule. The Law Reform Commission’s consolidated legislation specifically marks the section 221 amendment as prospective and not commenced.

The position was still being addressed officially in 2026. In a Dáil answer on 19 May 2026, the Department confirmed that the provision to extend the clinical negligence limitation period from two years to three years is contained in the 2015 Act, while its commencement remained linked to work on the clinical negligence pre-action protocol. For anyone considering a claim now, the practical message is clear: do not rely on having three years. The current operative general period remains two years, subject to the date-of-knowledge and other statutory rules discussed above.

Frequently Asked Questions

Do I Need to Know That the Doctor or Hospital Was Legally Negligent Before Time Starts Running?

No. The date-of-knowledge test does not require the claimant to know that an act or omission legally amounts to negligence. Section 2 of the 1991 Act expressly says that knowledge of whether conduct amounts, as a matter of law, to negligence, nuisance or breach of duty is irrelevant. What matters is knowledge of the statutory facts, including the injury, its significance, its attribution to the relevant act or omission and the identity of the defendant.

Does Requesting My Medical Records Stop the Limitation Period?

Requesting medical records should not be treated as commencing legal proceedings or automatically stopping the limitation period. Records can be extremely important because they may show test results, treatment decisions, correspondence and the sequence of events relevant to the claim, but obtaining them is part of investigating the case. If a limitation date may be approaching, the records request and the legal deadline need to be dealt with at the same time rather than waiting until every document has been obtained before seeking advice.

Does Making a Complaint to the Hospital or HSE Stop the Clock?

A hospital or HSE complaints process should not be assumed to pause the statutory limitation period for a civil medical negligence claim. A complaint may help a patient obtain an explanation or information, but it serves a different purpose from commencing legal proceedings. If a complaint is ongoing while you are considering a medical negligence claim, the legal deadline should be checked independently.

Can Parents Start a Medical Negligence Claim Before Their Child Turns 18?

Yes. A claim involving a child does not have to wait until the child becomes an adult. Court rules permit a minor to sue through a next friend, commonly a parent or guardian. Irish courts also supervise settlements involving children to make sure the settlement is appropriate before it is approved. Starting an investigation earlier can also help preserve evidence in birth injury, neonatal care and other childhood medical negligence cases.

Do All Medical Negligence Claims Have to Be Brought in the High Court?

No. It would be incorrect to state that every medical negligence claim must be brought in the High Court. Irish personal injury legislation recognises proceedings in the High Court, Circuit Court and District Court, depending on jurisdiction and the circumstances of the action. Many serious medical negligence cases are dealt with in the High Court, but the appropriate court is a procedural question for the individual claim rather than part of the basic limitation rule.

What Should I Do If I Cannot Work Out My Date of Knowledge?

Do not choose a date based only on when the treatment occurred or when you first suspected that something was wrong. Date of knowledge can depend on several statutory facts and on what information was reasonably available at different points in time.

References

Legal Services Regulation Act 2015 

https://www.irishstatutebook.ie/eli/2015/act/65/section/221/enacted/en/html

Statute of Limitations (Amendment) Act 1991

https://revisedacts.lawreform.ie/eli/1991/act/18/section/3/revised/en/html