Do I need an independent doctor's report to sue for medical negligence?

Many people expect that the medical records will "speak for themselves". In most cases they do not, at least not to a court. This short guide explains why independent expert evidence is usually essential and how to make sure it helps rather than hinders your claim.

Why is an expert usually needed?

Judges are not doctors. To decide whether a doctor fell below the standard of a reasonably competent practitioner, Malaysian courts apply the Bolam test as qualified by Bolitho for diagnosis and treatment (Federal Court, Zulhasnimar, 2017). That test asks what a responsible body of medical opinion would accept, which requires evidence from someone qualified in the field. Causation questions, such as whether earlier treatment would have changed the outcome, also need medical evidence.

There are rare exceptions where the facts are obvious, such as some retained surgical items, but even then expert evidence about the consequences is usually needed.

Which specialty should the expert be in?

The expert should match the specialty of the doctor whose care is criticised, and the question being asked:

• Breach: a surgeon for surgical decisions, an anaesthetist for anaesthesia, an obstetrician for labour management, an emergency physician for an emergency department discharge.
• Causation: often a different specialist, for example an oncologist on how a delay affected a cancer, or a neurologist on the cause and timing of brain injury.
• Quantum (value of the claim): sometimes rehabilitation, care, or occupational therapy experts.

A general practitioner is usually not the right expert to criticise a specialist surgeon, and vice versa.

What makes an expert "independent"?

The expert should have no personal or professional connection with the doctors or hospital involved, and must give an objective opinion. The Rules of Court 2012 make this explicit: under Order 40A, an expert's duty is to assist the court, and that duty overrides any obligation to the person who instructed or pays the expert.

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What must the report contain?

Under Order 40A, unless the court directs otherwise, expert evidence at trial is given in a written report signed by the expert and exhibited in an affidavit. The report must include, among other things:

1. the expert's qualifications;
2. the literature or other material relied on;
3. the issues the expert was asked to consider and the basis of the evidence;
4. where there is a range of opinion, a summary of the range and reasons for the expert's own view;
5. a summary of conclusions;
6. a statement of belief in the correctness of the opinion; and
7. a statement that the expert understands their overriding duty to the court and complies with it.

The other side may, with the court's leave, put written questions to clarify the report; the application must be made within 14 days of service of the expert's affidavit unless the court allows more time.

When should the expert be instructed?

Usually after the full records are obtained and reviewed, and before a claim is filed, so that the claim is built on evidence. A preliminary screening opinion can help decide whether to go further before the cost of a full report.

Practical tips

• Give the expert complete records, including imaging, not a summary.
• Ask focused questions: what was the standard, was it met, and what difference did any failure make?
• Do not "shop" for opinions. Courts look critically at experts who appear partisan.
• Be prepared for an unfavourable answer. An honest "no breach" opinion saves you from a costly claim that would likely fail.

Common mistakes: relying on a treating doctor's informal comment ("this should not have happened") as if it were expert evidence; instructing an expert from the wrong specialty; and giving the expert only selected documents.

When to speak to a lawyer

Speak to a lawyer before instructing an expert, so the right questions go to the right specialist with the right documents. A lawyer who has practised medicine can often narrow the issues first, which can make expert review more focused. You can contact us for an initial discussion; every case depends on its facts.

Frequently asked questions

Can my own treating doctor be the expert?

Usually it is better to use an independent expert. Treating doctors can give evidence of fact about what they found and did, but an independent opinion on the standard of care carries more weight.

Can the expert be from overseas?

Sometimes, particularly where local experts are connected to the defendants. The court considers the expert's familiarity with the relevant practice.

What if the experts disagree?

That is common. The court weighs the reasoning, and under Bolitho may reject an opinion that does not withstand logical analysis.

Do I need an expert to complain to the MMC?

No. A complaint to the Malaysian Medical Council does not require an expert report.

Is an expert needed for a small claim?

It depends. For minor injuries, the cost of an expert may be disproportionate; a complaint or direct resolution may be more practical.

Sources & fact check

Legal points in this article were checked against the primary sources below. The law can change; this is general information, not legal advice.

1. Rules of Court 2012, Order 40A (expert evidence) and Order 34 (pre-trial case management), gazette text
2. Zulhasnimar bt Hasan Basri & Anor v Dr Kuppu Velumani P & Ors [2017] 5 MLJ 438 (Federal Court) (reported judgment)
3. Laws of Malaysia Online, Attorney General's Chambers (official text of Acts)

Fact-checked on 17 Oct 2026