- The Honest Verdict on Difficulty
- What the Official 2025 Numbers Say
- Exam Format That Shapes the Difficulty
- Domain-by-Domain Difficulty Breakdown
- Why Capable Nurses Still Miss the Mark
- Who Finds It Easier, Who Finds It Harder
- Scoring Reality: What 350 of 500 Means
- A Domain-Sequenced Prep Plan
- Eligibility, Fees and Retake Rules That Raise the Stakes
- Frequently Asked Questions
- The official 2025 first-time pass rate was 65%: 229 of 352 first-time candidates passed.
- The exam has 150 questions (125 scored, 25 unscored pretest) and a 3-hour limit.
- Passing requires a scaled score of at least 350 out of 500, not a raw 70%.
- Foundations of Practice is the largest domain at 36%, so it deserves your earliest study weeks.
The Honest Verdict on Difficulty
The Informatics Nursing Certification exam, administered by the American Nurses Credentialing Center (ANCC), is a moderately difficult professional exam. It is not trivia-heavy, and it is not a pharmacology-style memorization test. Its difficulty comes from breadth, scenario-based judgment, and the fact that many nurses work in only one slice of informatics while the exam covers all of it.
A note on terminology before going further. You will see this credential called "RN-BC" in legacy materials and in search results, and this site's name reflects that history. The designation ANCC currently awards for informatics nursing is Nursing Informatics-Board Certified (NI-BC). If you need a refresher on naming, see our explainer on what RN-BC stands for and the broader RN-BC certification overview. The exam content is the same informatics nursing exam either way.
Whether the exam feels hard depends largely on your background. A nurse who spends most days in clinical workflow optimization may find Foundations of Practice comfortable but feel exposed on Data Management and Healthcare Technology. A nurse working as an analyst may have the opposite experience.
What the Official 2025 Numbers Say
The most useful objective data point is ANCC's own 2025 certification data: 229 of 352 first-time candidates passed, a 65% first-time pass rate. As of December 31, 2025, 3,536 certificants were recorded.
Be cautious with unofficial claims. Some third-party practice sites quote much higher estimated pass rates. Those are not the official ANCC result, and you should anchor your expectations to the 2025 ANCC figures above.
Exam Format That Shapes the Difficulty
Format facts explain a lot about why the exam feels the way it does. Older descriptions of this exam, which you may still find online, cite 175 questions and 3.5 hours. The current exam is shorter:
| Feature | Current Specification |
|---|---|
| Total questions | 150 |
| Scored questions | 125 |
| Unscored pretest questions | 25 (indistinguishable from scored items) |
| Testing time | 3 hours |
| Format | Multiple-choice, computer-based at Prometric test centers |
| Reference materials | Closed book; no personal calculators, study materials, or outside electronic resources |
| Review options | Questions can be marked for later review; no penalty for guessing |
| Breaks | Break time counts against testing time |
Three details matter for difficulty. First, you cannot tell which 25 questions are unscored, so you must treat every item seriously. Second, three hours for 150 questions works out to roughly 72 seconds per question, which punishes slow reading of long scenarios. Third, because there is no guessing penalty, leaving an item blank is always the wrong move. Mark it, move on, and return if time allows.
Domain-by-Domain Difficulty Breakdown
The exam objectives come from ANCC's Informatics Nursing Board Certification Examination Test Content Outline (effective May 3, 2023, updated August 29, 2025). The outline assigns scored items across three domains: 45 to Foundations of Practice, 44 to System Design Lifecycle, and 36 to Data Management and Healthcare Technology. The outline's own examples are not exhaustive and do not signal relative importance, so treat them as illustrations rather than a checklist. For the full treatment, read our guide to all three content areas.
Domain 1: Foundations of Practice (36%)
The largest domain, with 45 scored items. Difficulty is moderate for most nurses because it overlaps with professional nursing judgment, but the informatics framing can trip up candidates who answer from a purely clinical mindset.
- Expect questions that ask what an informatics nurse should do, which is often different from what a bedside nurse would do.
- Scope-of-practice and role-boundary reasoning is more heavily tested than memorized definitions.
- Because it carries the most weight, weakness here is the hardest to offset elsewhere.
Domain 2: System Design Lifecycle (35%)
Close behind at 44 scored items. This is where nurses without project experience often feel the steepest learning curve.
- Scenario questions typically describe a stage of a project and ask for the best next step.
- Candidates who have never participated in a system implementation tend to find sequencing questions the most abstract.
- Practice thinking in terms of stages and what belongs in each, not isolated facts.
Domain 3: Data Management and Healthcare Technology (29%)
The smallest domain at 36 scored items, but often the one that feels hardest to nurses from purely clinical backgrounds.
- It rewards comfort with data concepts and technology terminology that bedside work rarely requires.
- Smaller weight does not mean skippable: 36 scored items is roughly 29% of your result.
- Candidates with analyst or IT-adjacent experience usually score best here.
Why Capable Nurses Still Miss the Mark
Answering as a clinician instead of an informatics nurse
The most common trap is choosing the answer that would be best at the bedside rather than the one that reflects informatics practice. When two options both sound clinically reasonable, ask which one a nurse in an informatics role, working with systems, stakeholders, and data, would actually choose.
Lopsided experience
Because eligibility is built around informatics practice hours, many candidates arrive with deep experience in one area. An informatics nurse who has only supported an EHR build may never have touched the data-management concepts that fill part of Domain 3. The exam does not care which niche you work in; it samples all three domains.
Underestimating the clock
With roughly 72 seconds per item and break time counting against you, long scenario stems can eat your margin. Candidates who read every option twice on early questions often rush the final third.
Who Finds It Easier, Who Finds It Harder
Eligibility itself filters your cohort. Candidates need an active RN license, a bachelor's or higher nursing degree, two years of full-time-equivalent RN practice, and 30 informatics nursing continuing education hours within the previous three years. They must also satisfy one of three routes: 2,000 informatics nursing practice hours within three years; 1,000 such hours plus 12 semester credits in informatics courses within a graduate-level informatics nursing program; or completion of an informatics nursing graduate program with at least 200 faculty-supervised informatics practicum hours. Full details are in our requirements guide.
- Likely easier: Candidates coming through a graduate informatics program, because coursework tends to mirror the blueprint's structure, and candidates with varied project exposure across the system lifecycle.
- Likely harder: Candidates who qualified through practice hours in a narrow role, those with limited data or analytics exposure, and those who have been away from formal study for years.
These are patterns of reasoning, not measured outcomes, so use them to decide where to focus rather than to predict your result.
Scoring Reality: What 350 of 500 Means
Passing requires a scaled score of at least 350 on a scale with a maximum of 500. This is a scaled score, not a raw 70% requirement, so you cannot convert it to a simple number of questions you can afford to miss. Because 25 of the 150 items are unscored pretest questions, only 125 count toward your result, and you will not know which are which.
The practical implication is that you should not try to game a cutoff. Aim for solid competence across all three domains. Our passing score breakdown explains scaled scoring in more detail.
A Domain-Sequenced Prep Plan
Generic study advice matters less than ordering your effort around the blueprint. A sensible sequence puts the heaviest domain first, the most abstract domain in the middle when you have momentum, and the domain most likely to be unfamiliar with enough time to revisit it. This is one possible structure; adjust it to your own gaps. For a fuller roadmap, see the RN-BC study guide.
Foundations of Practice (36%)
- Start with the largest domain so weaknesses surface early.
- Practice rewriting clinical instincts into informatics-role answers.
System Design Lifecycle (35%)
- Work through stage-by-stage scenarios and next-step reasoning.
- If you lack project experience, study how each stage connects to the next.
Data Management and Healthcare Technology (29%)
- Build comfort with data and technology terminology if your background is clinical.
- Allocate extra time here if your daily work rarely touches data concepts.
Mixed timed practice
- Simulate the 3-hour, 150-question format to test pacing.
- Review misses by domain to decide where final days go.
For a compact reference to revisit during that final week, our one-page cheat sheet collects the must-know facts. You can also build familiarity with exam-style questions on the main practice test site, which is useful for the timed week.
Eligibility, Fees and Retake Rules That Raise the Stakes
Difficulty is also about consequences. Initial certification fees are USD 395 for nonmembers, USD 295 for ANA members, and USD 340 for ANIA members, and each includes a USD 140 nonrefundable administrative fee. See the cost breakdown for the full picture.
- Scheduling: Applications are accepted year-round. After approval you have a 120-day authorization window and schedule through Prometric using the Eligibility ID in your approval email. Our exam dates and scheduling guide covers the logistics.
- Retakes: You must wait at least 60 calendar days between attempts, with no more than three attempts in any 12-month period.
- Term: Certification lasts five years. Renewal fees are USD 350 for nonmembers, as low as USD 250 for ANA members, and USD 295 for ANIA members.
Key Takeaway
The 60-day wait and three-attempt cap mean a failed attempt costs time as well as money. Treat your first attempt as the real one: schedule only when your timed practice results are consistently solid across all three domains, not just your strongest one.
Many candidates weigh this investment against career outcomes. Our analyses of whether the certification is worth it and the salary picture can help you decide whether the difficulty is worth taking on, and the jobs overview shows where certified informatics nurses tend to work.
Frequently Asked Questions
There is no reliable official cross-exam comparison, so it is best judged on its own terms. The 2025 first-time pass rate of 65% suggests it is passable but demanding, and its difficulty comes mainly from scenario-based judgment across three broad domains rather than from memorization.
There is no fixed raw percentage. You need a scaled score of at least 350 on a 500-point scale. The exam has 150 questions, but only 125 are scored, and you cannot identify the 25 unscored pretest items.
It depends on your background. Foundations of Practice is the largest at 36%, System Design Lifecycle is 35%, and Data Management and Healthcare Technology is 29%. Nurses from purely clinical roles often find the data and technology content least familiar, while those without project experience may find the lifecycle scenarios more abstract.
No. The exam is closed book, and personal calculators, study materials, and outside electronic resources are prohibited. It is delivered as a computer-based multiple-choice exam at Prometric test centers.
You can retest after at least 60 calendar days, with no more than three attempts in any 12-month period. Use the score feedback to identify weaker domains and rebuild your plan before reapplying.