What are the 4 codes of medical ethics?

The Four Pillars of Medical Ethics

At the heart of every medical decision lies a framework of moral principles designed to guide healthcare professionals in providing responsible, compassionate care. These principles form what is widely known as the four codes of medical ethics: beneficence, nonmaleficence, autonomy, and justice.

Beneficence is the duty to act in the patient’s best interest. It goes beyond mere treatment—it’s about actively promoting well-being, preventing harm, and striving for positive outcomes. A doctor recommending a life-saving surgery, for example, is practicing beneficence.

Its counterpart, nonmaleficence, is often summarized by the phrase “first, do no harm.” While closely linked to beneficence, nonmaleficence focuses specifically on avoiding actions that could cause unnecessary suffering or risk. This principle urges caution, especially when treatments carry significant side effects or uncertain outcomes.

Autonomy respects a patient’s right to make informed decisions about their own body. It’s the foundation of informed consent. Even when a physician believes a certain treatment is best, they must honor the patient’s choice—provided they are competent and fully informed. This principle underscores the importance of open dialogue and shared decision-making.

Finally, justice calls for fairness in the distribution of healthcare resources and access to treatment. It challenges systemic inequities and asks professionals to treat patients equitably, without bias based on age, race, socioeconomic status, or other factors. In a broader sense, justice also applies to public health policies and ethical allocation of limited medical resources.

Together, these four principles don’t always align perfectly—conflicts can arise, such as when a patient’s autonomous choice seems to go against their well-being. But they offer a crucial framework for navigating the complex moral terrain of modern medicine, ensuring care remains both humane and principled.