- What Is CSC Certification?
- Who Hires CSC-Certified Nurses
- Eligibility and Practice-Hour Routes
- Exam Format and Registration Mechanics
- The Four CSC Exam Domains
- Scoring, Pass Rate, and What It Means
- The November 2026 Blueprint Change
- Building a Domain-Weighted Study Plan
- Renewal Requirements Every Three Years
- Frequently Asked Questions
- CSC is administered by AACN Certification Corporation for nurses managing the first 48 hours after adult cardiac surgery.
- The exam has 90 multiple-choice questions (75 scored, 15 unscored) with a passing cut of 55 of 75 scored items.
- Therapeutic Interventions (43%) and Complications (33%) together make up 76% of the current test plan.
- Initial exam fee is $150 for AACN members and $240 for nonmembers, tested via PSI centers or Live Remote Proctoring.
What Is CSC Certification?
CSC stands for Cardiac Surgery (Adult), a nursing subspecialty credential issued by AACN Certification Corporation, the certifying body affiliated with the American Association of Critical-Care Nurses. Unlike broader critical-care credentials, CSC is deliberately narrow: it validates competency in caring for adult patients during the first 48 hours after cardiac surgery - arguably the most hemodynamically volatile window in the entire postoperative course.
If you're researching this credential for the first time, our companion pieces on What Is CSC? and CSC Meaning walk through the terminology in more depth. This article focuses on the practical mechanics: eligibility, exam structure, domain weighting, and what changes are coming in late 2026.
Who Hires CSC-Certified Nurses
CSC-certified nurses typically work in cardiac surgical ICUs, cardiovascular ICUs, and post-anesthesia care units that receive fresh cardiac surgery patients directly from the operating room. Hospitals with active cardiac surgery programs - coronary artery bypass grafting, valve repair/replacement, aortic procedures, and mechanical circulatory support - rely on nurses who can recognize and respond to the specific complication patterns of this population within hours of surgery.
Because the certification signals depth in a narrow clinical window, it is frequently listed as a preferred or differentiating credential on job postings for cardiac surgical ICU roles. If you're evaluating whether pursuing it fits your career trajectory, see CSC Jobs for how the credential shows up in postings, and Is the CSC Certification Worth It? Complete ROI Analysis 2026 for a broader cost-benefit discussion.
Eligibility and Practice-Hour Routes
Eligibility for CSC has two non-negotiable pieces: an unencumbered U.S. RN or APRN license, and a current, nationally accredited clinical nursing specialty certification. Beyond that, candidates qualify through one of two practice-hour pathways.
Two-Year Practice Route
Designed for nurses with recent, concentrated exposure to this population.
- 1,750 total hours caring for acutely/critically ill adults within the previous 2 years
- At least 875 of those hours must fall within the most recent year
- 875 of the total hours must specifically involve adults during the first 48 hours after cardiac surgery
Five-Year Practice Route
Built for nurses whose experience is spread over a longer career window.
- 2,000 qualifying adult acute/critical-care hours over the previous 5 years
- At least 144 of those hours in the latest year
- 1,000 of the total hours must involve the first-48-hours postoperative cardiac surgery population
Applicants must also be able to name a clinical supervisor or an RN/physician colleague who can verify their practice hours if AACN selects them for an audit. For a full breakdown of documentation expectations, read CSC Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Exam Format and Registration Mechanics
The CSC exam is closed-book and delivered at PSI test centers or through Live Remote Proctoring, giving candidates flexibility in how and where they sit for it. The exam consists of 90 multiple-choice questions - 75 scored and 15 unscored (used for future item development, though candidates cannot tell which is which) - administered within a 2-hour window.
The initial exam fee is $150 for AACN members and $240 for nonmembers. Because membership status directly affects cost, it's worth checking current AACN membership pricing before you register. A more granular cost comparison, including renewal fees, is available in CSC Certification Cost 2026: Complete Pricing Breakdown.
Key Takeaway
Since 15 of the 90 questions are unscored, treat every question with equal seriousness during the exam - there's no reliable way to identify which items count toward your score.
The Four CSC Exam Domains
The CSC test plan is organized into four domains, each reflecting a distinct facet of postoperative cardiac surgical care. The weightings below apply to the examination version effective January 31, 2022 through November 18, 2026.
| Domain | Weight |
|---|---|
| Therapeutic Interventions | 43% |
| Complications | 33% |
| Monitoring and Diagnostics | 13% |
| Procedures | 11% |
Domain 3: Therapeutic Interventions (43%)
The single largest domain, covering the interventions used to stabilize patients in the immediate postoperative period.
- Hemodynamic support strategies, including vasoactive and inotropic titration
- Ventilator management and weaning in the fresh postoperative patient
- Fluid, electrolyte, and glycemic management specific to cardiac surgery recovery
Domain 2: Complications (33%)
Recognizing and responding to the specific complication patterns that emerge in the first 48 hours after cardiac surgery.
- Bleeding, tamponade, and mediastinal drainage abnormalities
- Dysrhythmias, low cardiac output syndrome, and vasoplegia
- Neurologic, renal, and pulmonary complications tied to cardiopulmonary bypass
Domain 4: Monitoring and Diagnostics (13%)
Interpreting the data streams unique to postoperative cardiac surgical monitoring.
- Invasive hemodynamic monitoring interpretation
- Lab trends relevant to bleeding, perfusion, and metabolic status
- Chest imaging and echocardiographic findings in the early postoperative window
Domain 1: Procedures (11%)
The smallest domain by weight but still foundational for understanding what patients have just undergone.
- Surgical approaches: CABG, valve repair/replacement, and combined procedures
- Mechanical circulatory support devices and their nursing implications
- Chest tube, pacing wire, and line management immediately post-surgery
Together, Therapeutic Interventions and Complications account for 76% of the current exam - meaning the majority of your preparation time should go toward mastering how to intervene and how to recognize when something is going wrong. For a domain-by-domain study breakdown, see CSC Exam Domains 2026: Complete Guide to All 4 Content Areas.
Scoring, Pass Rate, and What It Means
To pass CSC, candidates must correctly answer 55 of the 75 scored questions under the current passing cut. In 2025, 1,184 candidates tested for the first time, and the first-time pass rate was 52.20%. That figure reflects a genuinely challenging exam covering a narrow, high-acuity clinical window - not a credential to approach casually.
Because the passing standard is tied to a specific exam version, it's important to keep your study materials aligned to the correct blueprint. Review CSC Passing Score 2026: Exactly What You Need to Pass and CSC Pass Rate 2026: What the Data Shows for more context on what these numbers mean for your preparation.
The November 2026 Blueprint Change
The domain weights described above apply through November 18, 2026. Starting with exams administered on or after November 19, 2026, AACN is implementing a revised test plan:
- Procedures: 9%
- Complications: 37%
- Therapeutic Interventions: 43%
- Monitoring and Diagnostics: 11%
Complications rises from 33% to 37% while Procedures and Monitoring and Diagnostics each shift down slightly, and Therapeutic Interventions holds steady as the largest domain. If your test date falls near this transition, confirm which blueprint applies before finalizing your study plan - using outdated weighting could skew your time allocation. Check current windows in CSC Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Building a Domain-Weighted Study Plan
Generic study techniques only matter insofar as they map onto CSC's actual weighting. Since Therapeutic Interventions and Complications combine for 76% of the exam, your schedule should reflect that imbalance rather than treating all four domains equally.
Therapeutic Interventions Deep Dive
- Vasoactive/inotropic titration protocols and postoperative ventilator weaning
- Practice questions weighted toward the 43% domain first
Complications Recognition
- Bleeding/tamponade, low cardiac output syndrome, dysrhythmia patterns
- Case-based review of complication timelines within the first 48 hours
Monitoring, Diagnostics, and Procedures
- Hemodynamic waveform and lab-trend interpretation
- Surgical procedure review tied to device and line management
Full-Length Practice and Review
- Timed 90-question practice runs replicating the 2-hour format
- Targeted review of missed items by domain weight
A full walkthrough of pacing, question style, and error-analysis techniques is available in CSC Study Guide 2026: How to Pass on Your First Attempt. You can also run domain-tagged practice questions at our CSC practice test platform to see where your weak spots actually fall before test day.
Renewal Requirements Every Three Years
CSC certification is valid for 3 years. To renew, you must maintain your qualifying license and base certification, and demonstrate 432 first-48-hours postoperative adult cardiac-surgery practice hours during the 3-year cycle, including at least 144 hours in the latest year.
From there, you choose one of two paths:
- CERP path: 25 relevant Category A Clinical Judgment CERPs, at a renewal fee of $75 for members / $130 for nonmembers
- Exam path: retake the renewal exam, at a fee of $125 for members / $170 for nonmembers
Most nurses renewing on active clinical status find the CERP route more practical, since it avoids retesting while still requiring documented continuing education tied directly to clinical judgment in this population.
Key Takeaway
Track your 432 renewal hours continuously rather than reconstructing them near your expiration date - the 144-hour latest-year minimum makes last-minute documentation especially difficult.
Frequently Asked Questions
AACN Certification Corporation, the credentialing arm of the American Association of Critical-Care Nurses, administers CSC. Testing is available through PSI test centers or Live Remote Proctoring.
The exam has 90 multiple-choice questions - 75 scored and 15 unscored - to be completed within a 2-hour testing window.
Under the current passing standard, you need 55 correct answers out of the 75 scored questions.
Yes. In addition to an unencumbered U.S. RN/APRN license, you need a current, nationally accredited clinical nursing specialty certification, plus qualifying practice hours under either the 2-year or 5-year route.
Yes. Exams administered on or after November 19, 2026 will use revised weights: Procedures 9%, Complications 37%, Therapeutic Interventions 43%, and Monitoring and Diagnostics 11%, replacing the blueprint that has applied since January 31, 2022.