Objective In Belgium, people with an incurable psychiatric disorder can file a request for euthanasia claiming unbearable psychic suffering. For the request to be accepted, it has to meet stringent legal criteria. One of the requirements is that the patient possesses decision-making capacity. The patient’s decision-making capacity is assessed by physicians.

The objective of our study is to provide insight in the assessment of decision-making capacity in the context of euthanasia for patients with psychic suffering caused by a psychiatric disorder.

Method Twenty-two semistructured interviews with psychiatrists and neurologists were analysed with NVivo, a qualitative analysis software to code and organise transcribed data.

Results Different views and approaches regarding decision-making capacity in the context of euthanasia emerged from the data.

Most of the physicians have some knowledge of the cognitive ability approach on decision-making capacity. According to this approach, four abilities constitute decision-making capacity: communication, understanding, appreciation and reasoning. We observed differences in the way these abilities are valued in relation to competence. Some physicians take additional elements into consideration when assessing decision-making capacity.

Physicians acquired their knowledge on the subject in many different ways. Most of the physicians reported that decision-making capacity was not part of their training.

Conclusion We conclude that physicians assess decision-making capacity in different ways and that personal values and beliefs influence their approach. As such, a common approach in assessing the decision-making capacity of a patient among the interviewed physicians is lacking. Less arbitrariness could be obtained by consistently implementing the cognitive ability approach.