CEN stands for Certified Emergency Nurse, a professional credential for registered nurses who specialize in emergency department care. Awarded by the Board of Certification for Emergency Nursing (BCEN), it’s considered the foundational specialty certification for RNs working across the emergency spectrum. As of the end of 2024, roughly 40,690 nurses in the U.S. hold an active CEN credential.
What the CEN Credential Covers
Emergency nurses handle an unusually broad scope of clinical situations. Unlike a cardiac nurse or a labor-and-delivery nurse, an ED nurse needs to assess, triage, stabilize, and help manage virtually any patient who comes through the door. The CEN certification reflects that breadth. It tests knowledge across ten clinical domains, from heart and lung emergencies to mental health crises, traumatic injuries, toxicology, and professional issues like ethical decision-making and communication.
The credential signals that a nurse has demonstrated competency beyond what a general RN license requires, specifically in the fast-paced, high-acuity environment of emergency care.
Who Can Take the CEN Exam
You need a current, unrestricted registered nurse license in the United States, a U.S. territory, Canada, or Australia. Nurses with an equivalent international nursing certificate can also qualify, though they’ll need to verify their credential through a third-party service called TruMerit.
BCEN recommends two years of emergency nursing experience before sitting for the exam, but it’s a recommendation, not a requirement. Technically, a newly licensed RN could register for the test, though most candidates study and build clinical experience first.
What the Exam Looks Like
The CEN exam contains 150 questions spread across ten content areas. The heaviest sections, each making up about 12% of the test, cover cardiovascular emergencies, respiratory emergencies, neurological emergencies, and a combined category of gastrointestinal, genitourinary, gynecological, and obstetrical emergencies. The remaining sections each account for roughly 7 to 9% of the exam and include:
- Mental health emergencies (about 7%)
- General medical emergencies (about 9%)
- Musculoskeletal and wound emergencies (about 9%)
- Maxillofacial and ocular emergencies (about 7%)
- Environmental, toxicology, and communicable disease emergencies (about 9%)
- Professional issues (about 9%)
The exam is computer-based and offered at testing centers. BCEN publishes a detailed content outline that functions as the best available study roadmap, and an updated version goes into effect in July 2026.
Exam Costs
The standard exam fee is $380. Members of the Emergency Nurses Association (ENA) pay a reduced rate of $285, and active-duty military personnel qualify for a $195 discounted price. If you don’t pass, a retest costs $200. BCEN also offers a “Test Assurance” add-on for an extra $70 at registration, which covers the retest fee entirely if you need a second attempt.
Keeping Your Certification Active
The CEN certification is valid for four years. To recertify, you can either retake the exam or complete 100 contact hours of continuing education during your four-year cycle, then attest that you’ve met the requirement. That works out to about 25 hours of continuing education per year, which many nurses accumulate through workplace training, conferences, and online courses.
Career and Pay Impact
The professional benefits of CEN certification are real but worth understanding clearly. Ninety-five percent of supervisors surveyed by BCEN say the credential is valuable to the emergency nursing profession. Hospitals pursuing or maintaining Magnet designation actively seek nurses with specialty certifications, and holding a CEN can position you for leadership roles, charge nurse responsibilities, and advancement into education or management.
The salary picture is more nuanced than you might expect. A 2025 BCEN survey found that 55% of employers do not increase pay for initial certification, and 71% do not offer a one-time bonus for earning it. Recertification fares even worse: 77% of employers don’t raise pay and 81% don’t offer a bonus when nurses renew. So while the credential consistently opens doors for career mobility and peer recognition, a guaranteed pay bump is far from universal. Your specific hospital system, union contract, or geographic market will determine whether certification translates directly into higher compensation.
How to Prepare
BCEN doesn’t prescribe a specific study timeline, but most nurses who’ve been through the process recommend three to six months of focused preparation. The single most important resource is the official CEN content outline, which lists every topic eligible for the exam. From there, candidates typically use a combination of review courses (offered by ENA and various third-party providers), practice exams, and clinical reference textbooks covering emergency nursing.
If you’re already working in an emergency department, your daily clinical experience covers a significant portion of the exam content. The areas that tend to require extra study are the ones you encounter less frequently in practice, such as ocular emergencies, obstetrical emergencies, or environmental exposures like envenomation and hypothermia. Focusing your study time on those gaps, rather than reviewing what you already handle every shift, is generally the most efficient approach.