- The AOBA Certification in Critical Care Medicine (CCM) exam has 200 questions across two 120-minute sections.
- Academic or content areas make up 66-75% of the exam - your review time should mirror that weight.
- You need a scaled score of at least 500 on a 200-800 scale, not a raw percentage, to pass.
- Initial exam fee is USD 600 (USD 180 more if you file a late application).
Quick Facts Snapshot
This page is a condensed reference for the American Osteopathic Board of Anesthesiology (AOBA) initial written examination for the Certification in Critical Care Medicine (CCM) subspecialty. It is not a substitute for full preparation - for that, see the CCM Study Guide 2026: How to Pass on Your First Attempt - but it's the single page you should bookmark and re-read the week before test day.
| Item | Detail |
|---|---|
| Certifying body | American Osteopathic Board of Anesthesiology (AOBA), under the AOA |
| Question count | 200 multiple-choice questions |
| Structure | Two 120-minute sections, one 10-minute scheduled break |
| Testing time | 4 hours (seat time 4 hours 10 minutes) |
| Passing standard | Scaled score of 500 or higher (200-800 scale) |
| Initial exam fee | USD 600 |
| Late application fee | USD 180 additional |
| Delivery | Remote proctored, annually, via MonitorEDU |
| Certification validity | 10 years, subject to Osteopathic Continuous Certification (OCC) |
Exam Format at a Glance
The exam is deliberately split into two equal blocks rather than one long sitting. Each of the two sections runs 120 minutes, and the two are separated by a scheduled 10-minute break - plan your hydration and bathroom break around that window, not around the total seat time of four hours ten minutes. Because the exam is delivered through remote proctoring, you sit for it wherever you have a private room and a reliable connection, rather than traveling to a testing center.
Laboratory values, an on-screen calculator, and a scratchpad are all provided within the testing platform, so you don't need to memorize reference ranges purely for recall - you need to know how to interpret them under time pressure. If you're still deciding whether the format and pace are manageable for your schedule, the deeper analysis in How Hard Is the CCM Exam? Complete Difficulty Guide 2026 walks through pacing math and question density in more detail.
Domain Breakdown
AOBA publishes three domains as official ranges rather than fixed percentages - treat these as bands, not exact targets, when you plan study hours. For the full explanation of what falls inside each domain, see CCM Exam Domains 2026: Complete Guide to All 3 Content Areas.
Domain 1: Diagnosis and Procedures (5-18%)
Covers recognizing critical illness presentations and the procedural knowledge tied to managing them in the ICU setting.
- Pattern recognition across organ-system failure presentations
- Procedural indications, contraindications, and complications
Domain 2: Academic or Content Areas (66-75%)
This is by far the largest domain and where most of your study hours belong. It spans the core knowledge base of critical care medicine as practiced by an anesthesiology-trained intensivist.
- The single highest-yield domain - treat it as the backbone of your review schedule
- Broad enough that fragmented, last-minute cramming rarely works well here
Domain 3: General Concepts/Skills (5-17%)
Covers the cross-cutting clinical reasoning and systems-level skills that apply across critical care scenarios rather than one specific disease process.
- Judgment and prioritization questions rather than pure recall
- Often tested through vignette-style, multi-step scenarios
Key Takeaway
Because Academic or content areas alone can account for up to three-quarters of the exam, allocate roughly three-quarters of your structured review time there before splitting the remainder between Diagnosis and procedures and General concepts/skills.
Eligibility Checklist
Before you can even register, AOBA requires that you meet every item below. Review the full breakdown in CCM Requirements 2026: Eligibility, Prerequisites & How to Qualify if any of these are unclear.
- Completion of an ACGME-accredited anesthesiology residency
- AOBA primary certification in anesthesiology already in hand
- Completion of an ACGME-accredited anesthesiology critical care medicine fellowship
- At least one year of practice as a critical care specialist prior to application
- Fellowship verification submitted directly by the training program - not by the candidate
That last point trips people up every cycle: your fellowship program, not you, must submit the verification. Follow up with your program coordinator early so a paperwork delay doesn't push your application into late-fee territory.
Registration, Fees, and Dates
The initial examination fee is USD 600. If you miss the standard application window, a late application fee of USD 180 is added on top. The exam is offered once per year, so missing a cycle typically means waiting a full year for the next opportunity - plan your fellowship completion timeline and application submission accordingly. For a full accounting of every cost associated with the credential, see CCM Certification Cost 2026: Complete Pricing Breakdown, and for the annual testing calendar and deadlines, check CCM Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Passing Score Mechanics
AOBA uses a scaled score system running from 200 to 800, and you need at least 500 to pass. This is not the same as needing 50% of raw questions correct - the scaling accounts for item difficulty across the pool of 200 questions. Don't waste energy trying to reverse-engineer "how many questions can I miss" the way you might for a straight percentage exam. Instead, focus on broad competency across all three domains. A full explanation of how the scaled score is calculated and what it means for your prep strategy is available in CCM Passing Score 2026: Exactly What You Need to Pass.
Remote Proctoring Checklist
Because the exam runs through AOA's MonitorEDU platform rather than a physical test center, technical readiness is part of your exam-day preparation, not an afterthought.
- Install and test the MonitorEDU Secure Browser before exam day
- Confirm you have a compatible personal computer and a compatible mobile device
- Secure a private, distraction-free room for the full seat time
- Have government-issued identification ready for verification
- Complete the required pre-test technical check well in advance - don't attempt it for the first time the morning of your exam
Key Takeaway
Run your MonitorEDU technical check at least a day or two before the exam so any connectivity or device issue doesn't eat into your scheduled seat time.
Maintaining Certification
Passing the exam is not the end of the story. Certification in Critical Care Medicine (CCM) remains active for 10 years, contingent on meeting Osteopathic Continuous Certification (OCC) requirements. Those requirements include:
- Maintaining active licensure
- Ongoing lifelong learning activity
- Periodic cognitive assessment
- Practice performance assessment
- 75 CME credits per three-year cycle, including 18 AOA Category 1-A or 1-B credits for the 2025-2027 cycle
- A quality-improvement attestation completed each three-year cycle
Building these into a routine - rather than scrambling near a renewal deadline - keeps the credential in good standing without disrupting clinical work.
Final-Week Review Plan
Generic study techniques like spaced repetition only matter here if they're mapped onto the actual domain weights. In the final stretch before your scheduled test date, structure your remaining hours around the three published domains rather than reviewing topics in random order.
Academic or Content Areas
- Work through the bulk of your question bank here since this domain can represent up to 75% of the exam
- Prioritize any content area where your practice accuracy is inconsistent
Diagnosis and Procedures
- Drill procedural indications, contraindications, and complication recognition
- Time yourself on vignette-style questions to match exam pacing
General Concepts/Skills
- Focus on multi-step clinical judgment scenarios rather than isolated facts
- Review flagged questions from earlier practice sessions
Full Simulation and Logistics
- Take a full-length timed simulation covering both 120-minute sections with the break
- Confirm your MonitorEDU technical check, ID, and private room are ready
If you want a realistic, timed way to rehearse the two-section, 200-question format before your actual test date, running full simulated sessions on our practice test platform is one of the more direct ways to confirm your pacing holds up under exam conditions. You can also use the practice platform to specifically stress-test your weakest domain rather than reviewing material you've already mastered.
Frequently Asked Questions
The exam contains 200 multiple-choice questions, split evenly across two 120-minute sections with a 10-minute scheduled break between them.
You need a scaled score of at least 500 on a 200-800 scale. This is not a raw percentage of correct answers - see CCM Passing Score 2026: Exactly What You Need to Pass for a full explanation.
The initial examination fee is USD 600. Filing a late application adds an additional USD 180, bringing the total to USD 780.
No. The exam is delivered through remote proctoring on AOA's MonitorEDU platform, offered once annually, provided you have a compatible computer, a compatible mobile device, a private room, and valid government-issued identification.
Certification remains valid for 10 years provided you meet Osteopathic Continuous Certification requirements, including licensure maintenance, CME credits, cognitive assessment, and practice performance assessment along the way.
Academic or content areas, since it represents 66-75% of the exam - the largest of the three published domains. See CCM Exam Domains 2026: Complete Guide to All 3 Content Areas for a full breakdown of what it covers.