- CASCC is 100 questions, four hours, open-book, with a 70% passing score (70 correct answers).
- Approved references are AMA CPT Professional Edition, ICD-10-CM, and HCPCS Level II only.
- Fee is $325 for one attempt or $399 for two, plus current AAPC membership.
- Domain 1 (operative note dissection) and Domain 4 (ASC reimbursement rules) drive the exam's real difficulty.
What CASCC Actually Tests
The Certified Ambulatory Surgery Center Coder (CASCC) credential, issued by AAPC, is built for coders who already work with operative reports in the ambulatory surgery setting and need to prove they can turn a surgeon's documentation into clean, defensible ICD-10-CM, CPT, HCPCS Level II, and modifier assignments. It is not an entry-level test of terminology alone - it assumes you already have advanced familiarity with anatomy, pathophysiology, and CPT/ICD-10-CM/HCPCS coding conventions before you sit down.
If you're still confirming whether this is the right credential for your career path, the overview at What Is CASCC? and the plain-language breakdown in CASCC Meaning are good starting points. This cheat sheet assumes you've already decided to sit the exam and just need the facts condensed onto one page.
Exam Mechanics at a Glance
Every fact here comes straight from AAPC's published exam requirements. Memorize this table before you memorize anything else.
| Element | Detail |
|---|---|
| Certifying body | AAPC |
| Delivery | Meazure Learning / ProctorU live remote proctoring, or computer-based testing center |
| Question count | 100 multiple-choice questions |
| Time limit | 4 hours |
| Passing score | 70% (70 correct answers) |
| Book policy | Open code book - CPT, ICD-10-CM, HCPCS Level II |
| Fee | $325 (one attempt) or $399 (two attempts) |
| Membership | Current AAPC membership required |
For a deeper walk-through of exactly how the scoring threshold is calculated, see CASCC Passing Score 2026: Exactly What You Need to Pass. If you're budgeting for the whole certification journey - not just the exam fee - CASCC Certification Cost 2026: Complete Pricing Breakdown lays out the full picture.
Key Takeaway
Because the exam is open-book but time-boxed to four hours across 100 questions, speed with your reference books matters as much as raw knowledge. Tab your CPT, ICD-10-CM, and HCPCS books before test day so you're not flipping blind under pressure.
The Seven Domains, Condensed
AAPC publishes seven tested competency areas for CASCC. Below is a fast-reference version of each; for the full walkthrough with sub-topics and study weighting, use CASCC Exam Domains 2026: Complete Guide to All 7 Content Areas.
Domain 1: Operative Note Dissection & Code Assignment
Read a full operative note and correctly apply ICD-10-CM, CPT, HCPCS Level II, and modifier codes - this is the exam's core skill.
- Identify primary vs. incidental procedures within a single note
- Apply correct modifiers for ASC-specific circumstances
Domain 2: Types of Surgery Performed in the ASC Setting
Recognize the surgical specialties and procedure categories routinely performed outside the hospital inpatient environment.
- Know which procedure types are commonly device-intensive or multi-procedure cases
Domain 3: Ancillary Procedures, Drugs & Biologicals
Code supporting services and supply items - including drugs and biologicals administered during the surgical encounter.
- Distinguish separately billable ancillary codes from bundled supplies
Domain 4: ASC Reimbursement Rules
Apply the payment logic unique to the ASC setting, including multiple procedures, device-intensive procedures, and discontinued procedures.
- Understand how discontinued procedure modifiers change payment
- Recognize when device-intensive rules override standard multiple-procedure reduction
Domain 5: Regulatory Rules
Know the federal and state standards that govern how ASC coding and billing must be structured.
Domain 6: Medical Terminology
Advanced surgical and clinical vocabulary used throughout operative documentation.
Domain 7: Anatomy and Physiology
Body-systems knowledge deep enough to interpret operative approach, structures involved, and procedure extent from the note itself.
Domains 1 and 4 are where most candidates underestimate the workload - they look like "easy" categories on paper but require synthesizing everything else you know. If you want an honest read on where the real difficulty sits, How Hard Is the CASCC Exam? Complete Difficulty Guide 2026 breaks it down domain by domain.
Approved Reference Books
You are allowed exactly one copy each of three references, and no substitutes:
- AMA CPT Professional Edition
- ICD-10-CM
- HCPCS Level II
AAPC recommends current-year editions but permits the current or immediately preceding year. Bringing an unapproved edition, a second copy of the same book, or a non-listed reference can create problems at check-in, so confirm your exact editions well before exam day.
ASC Reimbursement Rules to Memorize
Domain 4 is where general CPT knowledge stops being enough. The current exam format specifically emphasizes ASC-specific reimbursement scenarios layered on top of correct code assignment:
- Multiple procedures: how payment is structured when more than one procedure is performed in the same operative session.
- Device-intensive procedures: cases where implant or device cost drives a different payment methodology than standard procedures.
- Discontinued procedures: coding and modifier logic when a planned procedure is stopped before completion.
These three scenarios frequently appear layered into a single operative-note question - you might need to recognize a discontinued device-intensive procedure and code it correctly in one pass. This is exactly the kind of applied reasoning covered in CASCC Study Guide 2026: How to Pass on Your First Attempt if you want a structured plan for practicing these scenarios rather than just reading about them.
Key Takeaway
Don't study multiple, device-intensive, and discontinued procedure rules as three separate topics. Practice operative notes that combine them, because that's how AAPC tends to test Domain 4 in practice.
Registration, Fees & Format Choice
Registration mechanics are straightforward but unforgiving on details:
- Current AAPC membership is required to sit the exam.
- The specialty exam fee is $325 for a single attempt, or $399 for a two-attempt package.
- Delivery is through Meazure Learning, either via ProctorU live remote proctoring or at a computer-based testing center.
- Live remote testing requires a private room, reliable internet, a computer with an external webcam, and a matching government-issued photo ID.
For candidates weighing the remote vs. testing-center decision, or trying to line up exam timing with work schedules and study milestones, CASCC Exam Dates 2026: Testing Windows, Deadlines & Scheduling covers the scheduling logistics in more depth. And if you're still confirming you meet baseline eligibility before you pay for a seat, check CASCC Requirements 2026: Eligibility, Prerequisites & How to Qualify first.
After You Pass: Maintaining CASCC
Passing is not the finish line. Maintaining the credential requires:
- Continuing current AAPC membership annually.
- Completing 36 CEUs every two years for this single credential.
- Ensuring at least 8 of those CEUs are ASC-specific.
This is worth factoring into your decision before you register - it's an ongoing commitment, not a one-time exam fee. If you're weighing whether the credential pays off relative to that ongoing CEU obligation, Is the CASCC Certification Worth It? Complete ROI Analysis 2026 and CASCC Salary Guide 2026: Complete Earnings Analysis walk through the tradeoffs in more detail.
Final-Week Review Schedule
In the last stretch before exam day, structure your remaining review time around the domains that carry the most applied complexity rather than reviewing everything evenly.
Operative Note Drills
- Full-length notes covering Domain 1 code assignment and Domain 2 procedure-type recognition
Reimbursement Logic
- Multiple, device-intensive, and discontinued procedure scenarios tied to Domain 4
Ancillary Coding & Regulatory Review
- Drugs/biologicals under Domain 3, plus federal/state rules in Domain 5
Terminology, Anatomy & Logistics
- Quick Domain 6/7 refresh, confirm book editions, confirm exam format and login credentials
Notice this schedule intentionally front-loads Domain 1 and Domain 4 because they demand the most synthesis. Terminology and anatomy (Domains 6 and 7) are foundational but faster to refresh since you're not learning them from scratch - you're recalling them. For a fuller version of this kind of week-by-week plan, revisit CASCC Study Guide 2026: How to Pass on Your First Attempt.
Key Takeaway
Use timed, open-book practice sessions in the final week - not just flashcard review - since the real exam rewards speed with your CPT, ICD-10-CM, and HCPCS books as much as raw recall.
Running realistic, timed practice questions on our CASCC practice test platform in this final week helps confirm your pacing across all 100 questions within the four-hour window. It's also a fast way to see which of the seven domains still need attention before you commit to a registration date.
Where This Credential Fits on the Job
CASCC exists specifically because ASC coding differs from hospital outpatient or physician-practice coding - reimbursement rules for multiple, device-intensive, and discontinued procedures don't map cleanly onto other settings. Employers hiring for ASC-specific coding roles look for candidates who can prove that specialized knowledge rather than general CPT familiarity. If you're evaluating how the credential translates into hiring conversations, CASCC Jobs and CASCC Training cover the practical side of turning certification into employment.
For anyone still clarifying terminology before diving into study material, the quick-reference pages What Does CASCC Stand For? and What Is A CASCC? are useful primers to share with colleagues or hiring managers unfamiliar with the credential.
FAQ
The CASCC exam has 100 multiple-choice questions with a four-hour time limit, and it is open-book using your approved CPT, ICD-10-CM, and HCPCS Level II references.
You need 70%, meaning 70 correct answers out of 100 questions. See CASCC Passing Score 2026 for more detail.
The single-attempt fee is $325, or $399 for a two-attempt option, and current AAPC membership is required separately to sit the exam.
You're limited to one copy each of the AMA CPT Professional Edition, ICD-10-CM, and HCPCS Level II. Current-year editions are recommended, but the current or immediately preceding year is permitted.
Domain 1 (operative note dissection) and Domain 4 (ASC reimbursement rules for multiple, device-intensive, and discontinued procedures) tend to require the most applied practice, since they combine several skill areas in a single question.