Can a Doctor Perform Another Surgery without the Patient’s Consent?

Key Takeaways

• A doctor generally cannot perform another or additional surgery without the patient’s consent. Consent given for one operation normally authorises only that particular procedure and procedures reasonably forming part of it.
• Consent must be real, voluntary and based on adequate information. The patient must understand the nature and purpose of the proposed procedure before agreeing to it.
• Consent for a diagnostic procedure does not automatically amount to consent for therapeutic surgery. Similarly, permission for a minor procedure cannot ordinarily be treated as permission for removal of an organ or another major operation.
• An additional surgery may be performed without fresh consent in a genuine medical emergency where an unexpected condition creates an imminent danger to life or health and waiting for consent would be unreasonable.
• Convenience is not the same as necessity. Avoiding a second operation, reducing expenses or treating a condition while the patient is already under anaesthesia does not by itself justify an additional unauthorised procedure.
• The Supreme Court’s decision in Samira Kohli v Dr. Prabha Manchanda is the leading authority on this issue. It strongly protects patient autonomy and requires procedure-specific consent for additional surgery.
• Performing an unauthorised operation may result in legal consequences, including a claim relating to deficiency in medical service, civil liability and professional disciplinary consequences, depending on the facts of the case.

Can a Doctor Perform Another Surgery without the Consent of the Patient?

A doctor cannot ordinarily perform another surgery without the patient’s consent merely because the patient is already undergoing an operation. Consent for one particular surgical procedure is generally limited to that procedure.

If another medical condition is discovered during surgery, the surgeon cannot automatically treat it simply because doing so would be medically useful, convenient or capable of preventing another operation later.

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The most important exception arises in an emergency. If an unexpected condition creates an immediate threat to the patient’s life or health and waiting until consent can be obtained would expose the patient to serious danger, an additional procedure may be legally justified.

The Supreme Court explained these principles in Samira Kohli v Dr. Prabha Manchanda & Anr., (2008) 2 SCC 1, which remains the leading Indian decision dealing with consent for additional surgical procedures.

Why Is Consent Required before Surgery?

Consent in medical treatment represents the patient’s permission for a doctor to interfere with the patient’s body for a recognised medical purpose.

An operation may involve anaesthesia, cutting tissue, removing an organ, repairing an injury or making some other significant physical intervention. Therefore, the decision to undergo surgery belongs primarily to the patient, provided the patient has the legal and mental capacity to make that decision.

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The law protects this decision-making power through the principle of patient autonomy.

A doctor may possess greater medical knowledge, but that expertise does not generally allow the doctor to substitute a professional preference for the competent patient’s decision.

The Supreme Court has reiterated that valid consent requires capacity and competence, voluntariness and adequate information about the nature of the treatment. These requirements ensure that medical intervention is based on a genuine and informed decision.

What Is Valid Consent for Surgery?

Consent is not valid merely because a signature appears on a hospital form. The surrounding circumstances and the information provided to the patient are also important.

Patient Must Have Capacity to Consent

The person giving consent must be capable of understanding the nature and implications of the proposed treatment.

For a competent adult patient, consent should ordinarily come from the patient personally. Different rules may apply where the patient is a minor, unconscious or otherwise legally incapable of giving valid consent.

Consent Must Be Voluntary

Consent must be given freely.

Consent obtained through coercion, deception, undue pressure or material misconception may not constitute valid consent. The idea behind medical consent is that the patient makes a genuine decision rather than merely complying with what has been demanded.

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Adequate Information Must Be Given

The patient must receive sufficient information to understand what is being agreed to.

The information ordinarily includes matters such as:

• the nature and procedure of the proposed treatment;
• its purpose and expected benefit;
• likely effects and complications;
• substantial risks;
• available alternatives, where relevant; and
• consequences that may arise from refusing treatment.

The extent of disclosure may depend on the treatment and surrounding circumstances, but the patient must at least know the essential nature of the procedure for which consent is being given.

Does Consent for One Surgery Cover Another Surgery?

Generally, no.

Consent for one operation cannot automatically be interpreted as unrestricted authority to perform any other procedure that the surgeon considers medically desirable.

For example, consent for removal of a particular growth does not, merely by itself, authorise removal of an unrelated organ. Similarly, consent for diagnostic examination does not ordinarily authorise a major therapeutic operation.

The issue is determined by examining the scope of consent actually given.

This principle becomes particularly important when a surgeon discovers an additional medical condition after the patient has been placed under anaesthesia. At that stage, the patient cannot personally make another decision. The surgeon must therefore consider whether the additional procedure can safely wait or whether an immediate intervention has become necessary.

Does Consent for a Diagnostic Procedure Include Surgery?

Consent for a diagnostic procedure ordinarily does not amount to consent for a substantially different therapeutic operation.

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This issue was central to the Supreme Court’s decision in Samira Kohli v Dr. Prabha Manchanda.

The patient had consented in connection with diagnostic laparoscopy. During the procedure, a more extensive condition was discovered and a hysterectomy along with removal of reproductive organs was performed.

The Supreme Court examined whether consent for the diagnostic procedure could be treated as consent for the additional surgery.

The Court rejected the idea that consent for a diagnostic procedure automatically extends to an additional therapeutic procedure. An additional operation requires specific consent unless circumstances amount to a genuine emergency where immediate intervention is necessary.

The importance of consent in cases involving unauthorised medical intervention can also be seen in Lakshmi Rajan v Malar Hospital, where the scope of consent and removal of the uterus became important issues in determining liability.

What Did the Supreme Court Hold in Samira Kohli v Dr. Prabha Manchanda?

Samira Kohli v Dr. Prabha Manchanda & Anr. is one of the most important Indian cases on informed consent and unauthorised surgery.

The Supreme Court laid down several principles governing consent in medical treatment.

Consent Must Be Real and Valid

The patient must be competent to consent, the decision must be voluntary and consent must be based on adequate information regarding the proposed treatment.

Consent Must Relate to the Particular Treatment

Consent cannot be treated as unlimited permission.

When consent has been given for a particular diagnostic or therapeutic procedure, substantially different additional surgery ordinarily requires separate consent.

Diagnostic Consent Is Not Automatically Therapeutic Consent

Permission to conduct a diagnostic procedure does not by itself authorise a therapeutic operation.

Likewise, consent for a particular surgical treatment cannot ordinarily be expanded to include another substantial operation that was never discussed with the patient.

Additional Surgery Requires Specific Consent

Where a surgeon discovers another condition during surgery, the fact that treating it immediately might be beneficial does not automatically create legal authority to perform an additional operation.

Specific consent remains necessary unless an emergency makes postponement unreasonable.

Emergency Treatment Is an Exception

The Court recognised that exceptional circumstances can arise during surgery.

If an unforeseen development creates an imminent danger to the patient’s life or health and immediate action is required, the doctor need not allow the patient to suffer serious harm merely because fresh consent cannot physically be obtained at that moment.

When Can Another Surgery Be Performed without Fresh Consent?

The principal exception is a genuine medical emergency arising during treatment.

Suppose an unexpected complication occurs after the patient has become unconscious under anaesthesia. If the condition must be treated immediately to save the patient’s life or prevent serious and imminent harm, the surgeon may have lawful justification for performing the necessary procedure.

Three considerations become particularly important:

• The condition must require immediate attention. There should be a genuine medical necessity rather than merely an opportunity to provide additional treatment.
• Waiting must create a material risk. If the patient can safely regain consciousness and decide whether to undergo the additional procedure, fresh consent should ordinarily be obtained.
• The additional procedure should be directed towards dealing with the emergency. The emergency should not become a justification for unrelated or optional treatment.

The exception is therefore narrow. It protects necessary emergency medical action without converting consent for one surgery into a blanket authority.

What Is the Difference between Necessary and Beneficial Surgery?

This distinction is crucial.

An additional surgery may be beneficial because it could cure another condition, prevent a future problem, avoid further hospitalisation or save the cost of a second operation.

However, a beneficial procedure is not necessarily an immediately necessary procedure.

Suppose another condition is discovered during an operation, but it can safely be treated one month later. Performing the procedure immediately might save the patient from undergoing anaesthesia again. Even so, convenience and future benefit do not ordinarily replace the requirement of consent.

By contrast, suppose unexpected severe internal bleeding begins during surgery and another procedure is immediately necessary to control it. Delaying intervention until the patient regains consciousness could endanger life. Such a situation is fundamentally different.

The legal question is therefore not simply whether the additional procedure was medically sensible. The important question is whether there was such an immediate necessity that waiting for consent would have been unreasonable.

Can a Doctor Rely on a Blanket Consent Form?

A broadly worded hospital consent form does not necessarily give doctors unlimited authority to perform additional procedures.

Professional guidance on informed consent supports the requirement of explicit consent for surgery and procedures carrying known risks. In relation to surgery, consent should ordinarily be procedure-specific rather than treated as a blanket authorisation for every possible intervention.

This means that a form authorising doctors to perform “any procedure considered necessary” should not automatically be treated as permission for every possible operation.

The real inquiry remains whether valid consent was obtained for the particular procedure and whether an emergency justified departing from that consent.

Is Written Consent Required for an Operation?

Written consent is particularly important for surgery.

Professional medical ethics standards require written consent before an operation from the appropriate person, including the patient in the ordinary case of a competent adult.

Written consent provides evidence of what was explained and agreed upon. However, the mere existence of a signed document does not resolve every dispute.

A consent form is strongest when it accurately identifies:

• the particular operation;
• the purpose of the procedure;
• significant risks and possible complications;
• relevant alternatives;
• possible additional procedures that have been properly explained; and
• the patient’s voluntary agreement.

The focus is therefore on informed and procedure-specific consent, rather than obtaining a signature as an administrative formality.

Can Consent from a Relative Authorise Another Surgery?

Consent from relatives does not automatically replace the decision of a competent adult patient.

Where an adult patient possesses capacity to make a treatment decision, the patient’s own consent is ordinarily central.

Different considerations arise where the patient is unable to consent because of minority, incapacity or a medical emergency. In appropriate situations, consent may have to be obtained from a parent, guardian or another legally appropriate representative.

However, where the patient had already given limited consent before becoming unconscious under anaesthesia, obtaining informal approval from a relative cannot always cure the absence of the patient’s consent for a substantially different elective procedure.

The exact legal effect depends on the patient’s capacity, urgency of treatment and circumstances in which the decision becomes necessary.

Is an Additional Surgery without Consent Medical Negligence?

An unauthorised additional procedure can create legal liability, but lack of consent and medical negligence are conceptually different issues.

A surgeon may perform an operation with excellent technical skill and still face a legal challenge if the operation itself was outside the scope of the patient’s consent.

The issue in such cases is not necessarily that the doctor performed the surgery carelessly. It may instead be that the doctor interfered with the patient’s body without lawful permission.

Medical negligence, on the other hand, generally examines whether the doctor failed to exercise the standard of reasonable professional care expected in the circumstances. The Supreme Court has considered the standard of medical negligence in decisions such as Jacob Mathew v State of Punjab and Kusum Sharma v Batra Hospital and Medical Research Centre.

Therefore, a poor medical result alone does not establish negligence, while technically successful treatment does not automatically answer a complaint based on lack of consent.

What Legal Action Can Follow an Unauthorised Surgery?

The legal consequences depend on the facts, seriousness of the procedure, harm caused and forum approached.

An affected patient may potentially raise issues relating to:

Deficiency in Medical Service

Where medical treatment falls within applicable consumer law principles, performing a procedure without valid consent may become part of a complaint alleging deficiency in service.

Civil Liability

An unauthorised physical intervention may give rise to civil consequences, particularly where bodily injury, additional medical expenses, disability, loss of reproductive capacity or other damage results.

Professional Misconduct

A complaint may also be made before the appropriate medical regulatory authority where the conduct is alleged to violate professional or ethical requirements governing medical practitioners.

Criminal Liability in Appropriate Cases

Criminal liability is a separate and more serious question. It depends upon the specific offence alleged, applicable statutory provisions, the nature of consent, intention, knowledge, harm and surrounding circumstances. Lack of consent should therefore not automatically be equated with criminal guilt in every case.

The legal route and standard of proof can differ substantially depending on whether the allegation concerns lack of consent, negligence, professional misconduct or a criminal offence.

What Evidence Is Important in a Dispute about Additional Surgery?

Consent disputes are often heavily dependent on medical records.

Important material may include:

• the signed consent form and its exact wording;
• pre-operative consultation records;
• diagnosis and proposed treatment plan;
• doctors’ and nurses’ notes;
• operation theatre records;
• anaesthesia records;
• surgical notes describing what was discovered during the procedure;
• records explaining why the additional procedure was considered necessary;
• communications with family members;
• pathology and investigation reports; and
• post-operative records explaining what procedure was ultimately performed.

In an emergency defence, contemporaneous records explaining why the additional procedure could not safely be postponed can become particularly significant.

What If the Patient Would Have Agreed to the Additional Surgery Anyway?

The fact that a patient might probably have agreed does not ordinarily eliminate the requirement of consent.

Patient autonomy includes the opportunity to decide.

A doctor cannot generally justify an unauthorised elective procedure merely by arguing later that any reasonable patient would have accepted it.

The patient may have wished to seek a second opinion, consider alternative treatment, postpone surgery, consult family members or simply refuse the procedure.

Therefore, the legal requirement protects the decision-making process itself, not merely the medical outcome.

Does a Successful Additional Surgery Remove the Consent Problem?

No.

A successful result does not automatically make an unauthorised operation lawful.

Consent concerns whether the medical practitioner had permission to undertake the bodily intervention in the first place. Technical success concerns how competently that intervention was performed.

These are separate questions.

At the same time, the actual outcome and extent of harm may remain relevant when a court or consumer commission determines compensation or other relief.

Position of Law in India

The Indian legal position can be stated simply:

A doctor cannot ordinarily perform another substantial surgery without the patient’s specific consent merely because another condition is discovered during an operation. Consent for one procedure does not automatically cover a different procedure. An additional operation without fresh consent may be justified where a genuine and unforeseen emergency makes immediate intervention necessary to protect the patient’s life or health and waiting for consent would be unreasonable.

Indian medical law places considerable importance on bodily autonomy and informed decision-making. Valid medical consent requires capacity, voluntariness and adequate information about the treatment.

Conclusion

A doctor performing surgery has a duty not only to provide competent medical treatment but also to respect the limits of the patient’s consent.

Consent for one operation is not a general licence to perform any additional surgery that appears beneficial. A substantially different procedure ordinarily requires separate, informed and procedure-specific consent.

The emergency exception exists because medicine sometimes presents unforeseen situations where immediate action is necessary. If waiting for consent would expose the patient to an imminent threat to life or health, a doctor may be justified in carrying out the treatment reasonably necessary to address that emergency.

Outside such situations, convenience, medical benefit, avoidance of another operation or the fact that the patient is already under anaesthesia is generally insufficient to override patient autonomy.

The principle emerging from Samira Kohli v Dr. Prabha Manchanda remains clear: the patient’s right to decide what happens to the body must ordinarily be respected, and additional surgery requires additional consent unless a genuine medical emergency makes waiting impossible or unsafe.