Per Wikipedia: A nurse's postnominal (listed after the name) credentials usually follow his or her name in this order: Highest earned academic degree in or related to nursing (e.g. "MSN") Nursing licensure (e.g. "RN") Nursing certification (e.g. "CCRN")Generally credentials are listed from most to least permanent. A degree, once earned, cannot be taken away. State licensure is only revoked for serious professional misconduct. Certifications generally must be periodically renewed by examination or the completion of a prescribed number of continuing education units (CEUs). Therefore if you had a BSN with med/ surg certification then it would be BSN,RN-BC. I hope this clarifies it for you.