The image of professionals has been taken seriously in recent years. Professional healthcare providers have observed their duty strictly for many jobs codes, which has also affected their behavior. In the healthcare system, ethical dilemmas and issues regularly influence and challenge professional ethical behaviors and the competencies of health professionals. The present article highlights the literature discussions regarding current ethical norms, nursing codes, and professional-practice-related ethical behaviors. The findings indicate that fidelity is an important component of ethical behavior norm that is guided by the ethical principles of beneficence. Five elements of fidelity were identified, including loyalty, fairness, truthfulness, advocacy, and dedication. The 2015 American Nurses Association’s code of nursing ethics emphasizes the ethical behavior of fidelity in nursing practice. The results encourage nurses to apply the guide of fidelity to develop their nursing professional role across their professional nursing career, from the novice to expert level.