Professional codes of ethics are regarded as elements of nurses' ethical knowledge base and consequently part of their ethics education. However, research focusing on these codes from an educational viewpoint is scarce. This study explored the need and applicability of nursing codes of ethics in modern health care, their importance in the nursing ethics curriculum, and the need for development of their teaching. A total of 183 Finnish nurse educators and 212 nursing students answered three structured questions, with an opportunity (...) to justify their responses, and one open-ended question. Descriptive statistics and content analysis were used to analyse the data. The results suggest that the existence of the codes was seen as important and their applicability mainly as appropriate, despite new challenges posed by modern health care. The codes were regarded as an important part of nurses' ethics education, but current integrated teaching methods require development. (shrink)