How many questions are on the CPC exam? 100, in 4 hours

The CPC exam is 100 multiple-choice questions, and you get 4 hours to work through them. You need 70% to pass, which means 70 of those 100 correct. It's open book: your current-year CPT, ICD-10-CM, and HCPCS Level II manuals come in with you, whether you sit it online with a live proctor or in person. That's the whole answer to the headline question. What's worth understanding is how those 100 questions are spread, what the four hours really feel like, and why "only 100, and open book" is less generous than it sounds.

What the 100 questions actually cover

The 100 questions aren't a random pile. They're spread across the full range of what a certified coder does, so no single topic can carry you and no single weak spot can sink you on its own. In practice that means CPT coding across the body systems and specialties (surgery by system, radiology, pathology and lab, anesthesia, medicine, and evaluation and management), plus ICD-10-CM diagnosis coding, HCPCS Level II, and the coding guidelines and compliance rules that tie them together. There's also a thread of anatomy, physiology, and medical terminology running underneath the coding questions, because you can't pick the right code for a procedure you can't picture.

AAPC publishes a current content outline for the exam, and the exact weighting of each area can shift between versions, so if you want the precise blueprint, pull it from aapc.com rather than trusting a breakdown a course page quotes you. The practical takeaway doesn't change: study broadly. The candidates who get surprised are usually the ones who drilled the sections they liked and hoped the rest wouldn't show up. With 100 questions sampling the whole field, it always shows up.

How much time do 100 questions give you?

Four hours for 100 questions works out to about 2 minutes and 24 seconds per question. For the straightforward questions, that's plenty. But the questions aren't evenly sized. A quick HCPCS lookup and a dense operative report that you have to read, parse, and code both count as one question, but one takes forty seconds and the other can eat six minutes if you let it.

So the number that matters isn't really 2:24 per question, it's your average across all 100. The people who run out of time almost never do it because the exam is too long. They do it because one stubborn question turned into a twelve-minute crater in the middle of the test, and they never got the cushion back. The fix is a rule you decide before exam day: when a question stalls you, flag it, put down your best guess, and move on. You can circle back with whatever time is left. A blank at the end scores exactly the same as a wrong answer, so there's never a reason to leave one empty. We go deeper on where the exam actually gets people in how hard the CPC exam really is.

How many do you need to get right?

Passing is 70%, so out of 100 questions you need 70 correct. Think of it as a margin, not a percentage. You can miss thirty questions and still pass. That's genuinely reassuring on a hard section, and it's also a reminder not to spend your whole cushion in one place.

It also reframes how you read your practice scores. A mock where you hit 72% isn't a comfortable pass, it's a two-question margin, and two questions is nothing on a real testing day with real nerves. Aim to be consistently clearing the bar with room to spare before you book, not scraping it once. If the worst happens and you fall short, it isn't the end of anything, there's a clear retake path, which we walk through in what happens if you fail the CPC exam.

Does "open book" make 100 questions easier?

This is where the count is misleading. On paper, 100 open-book questions in four hours sounds like a formality. In reality, "open book" is the single biggest reason prepared-feeling people underestimate the exam.

Your manuals help only if you already know your way around them. If exam day is the first time you're navigating the CPT index under pressure, every lookup that should take twenty seconds takes two minutes, and across a hundred questions that gap is the whole exam. The books reward the coder who's tabbed, highlighted, and drilled with them for weeks; they punish the one meeting the index cold. And because you're allowed the manuals, the questions are written assuming you have them. They lean on the fine print, the "with" versus "without" in a code description, the note buried under a category header. Two answer choices will differ by a single modifier or bundling rule, and the book is where that detail lives.

So the honest version is: open book doesn't shrink the 100 questions, it changes what they test. Less raw memorization, more speed and precision inside the manuals. If that setup is new to you, open book doesn't mean easy covers how to prep the manuals so they save you time instead of costing it, and what to bring to the CPC exam covers exactly which editions and materials are allowed in the room.

Has the CPC always been 100 questions?

AAPC has streamlined the exam over the years, and the current version is the 100-question, 4-hour format described here. That matters mostly because older study guides, forum posts, and secondhand advice may still quote a different question count or time limit from a previous version. If a source's numbers don't match 100 questions and four hours, treat it as out of date and confirm the current format on aapc.com. The specifications, along with the exam fee and membership requirements, are the kind of detail AAPC can adjust, so the official page is always the number that counts on the day you register.

A quick CPC question-count FAQ

How many questions do I need to answer correctly? Seventy. Passing is 70% of 100 questions, so 70 correct clears the bar and you can miss up to thirty.

Are the questions all multiple choice? Yes. There are no essays or fill-in-the-blank items; every question is multiple choice, which is why the almost-right answer is the whole game.

Does the online-proctored version have the same number of questions? Yes. Whether you test at home with a live remote proctor or in person, it's the same 100 questions and the same four hours under the same open-book rules. The format you pick changes the logistics, not the exam, and we cover choosing between them in how to schedule the CPC exam.

Is 100 questions enough to practice with? Not once. The point of practice isn't a single 100-question run, it's enough full-length, timed reps that the count and the clock stop feeling like the test and start feeling like a Tuesday.

That last point is really the whole thing. Knowing the exam is 100 questions in four hours is the easy part; making 100 questions under a running clock feel ordinary is what actually gets you to 70. That's what we built the Brightwell Prep CPC study guide and exam simulator around: 700 exam-style questions with the reasoning written out behind every answer, plus full-length timed mocks in the real 100-question, 4-hour format. Drill until the number stops being intimidating, then book the date.