ICD-10-CM Practice Exam

Carefully Crafted by CCO Certified Instructors to Test Your Knowledge and Proficiency of ICD-10-CM Diagnosis Coding

ICD-10-CM Practice Exam
ICD-10-CM Practice Exam by CCO

Test Your ICD-10-CM Diagnosis Coding Knowledge and Competency

Has your job started testing for ICD-10-CM proficiency?

Not sure if you’ve truly grasped ICD-10-CM coding and are looking for a way to test your real-world knowledge?

Don’t worry, you’re not alone, Hundreds of students have invested in our ICD-10-CM Practice Exam in order to test their knowledge and competency in ICD-10-CM Diagnosis Coding.

Why Are Our ICD-10-CM Practice Exams So Effective?

Unlike other ICD-10 practice exams in the marketplace, all our instructors are CPC® Certified and have sat through the original AAPC ICD-10-CM Proficiency Exam. We learned the material in detail and have been working with students for years to help teach them ICD-10-CM. Now we’ve assembled our knowledge into these ICD-10-CM Practice Exams. Here are a few things you can expect from our tests.

Inspired by the ICD-10-CM Exam

All CCO Instructors have previously sat and passed the ICD-10-CM Proficiency exam. With our combined experience, we have first hand knowledge of what you need to know for on-the-job ICD-10-CM coding and these practice tests mimic the experience as closely as possible.

Real World Examples

We’ve gone through a lot of trouble to verify our Mini-Mock ICD-10-CM Practice Exams are accurate and correctly coded. We have each question reviewed by 3 instructors before they’re approved. And most of these cases can be seen in the real world.

Answer Rationale Included

You know what’s frustrating? Getting an ICD-10-CM answer wrong and not knowing why. That’s why CCO has included full rationale with every ICD-10-CM question in our test. So don’t worry, if you get any questions wrong, you’ll know why.

Instant Online Results

All our Mini-Mock ICD-10-CM Practice Tests are immediately available online from any internet-enabled device in the world. So once you’ve completed the test, you’ll immediately know your score.

Unlimited Retakes

All our Mini-Mock ICD-10-CM Practice Tests are available online you can retake them as many times as you like. Please note, however, that the questions will not change with each retake.

9 Months of Access

We provide 9 months of access to our Mini-Mock ICD-10-CM Practice Tests so there is no need to rush through all the questions at once. You can set your schedule and practice on your own convenience.

Printable Version

If you’re the type of person that likes to work with pencil and paper, don’t worry. We provide a printable version of the Mini-Mock ICD-10-CM Practice Test so you can take your test anywhere a pencil and paper is allowed.

Save & Resume Feature

Can’t finish the test in one sitting? No worries! We provide a helpful “Save and Resume” feature with every Mini-Mock ICD-10-CM Practice Exam so you can stop and resume the test whenever you like.

Certificate of Completion

Once you’ve passed our Mini-Mock ICD-10-CM Practice Exam, you will be able to instantly download a Certificate of Completion which will contain your name, the name of the test and your passing score.

Join Over 700+ Satisfied CCO Practice Exam Students



50 Questions


Unlimited Retakes

Instant Results with Rationale

9 Months of Access



50 Questions


Unlimited Retakes

Instant Results with Rationale

9 Months of Access

Exam Bundle

(Rubellite + Serpentine)


Save $10 by Bundling

100 Questions


Unlimited Retakes

Instant Results with Rationale

9 Months of Access

Frequently Asked Questions

What Is the Difference Between the Rubellite and Serpentine Exams?

Each exam contains a separate set of questions. We used the names “Rubellite” and “Serpentine” so students can distinguish the exams from each other.

Do the Questions Change Every Time You Retake the Same Exam?

No, the questions will not change. Each exam is programmed with only 50 of the same questions. If you suspect you will need more questions, we recommend investing in the 2 Exam Bundle so you can access 2 different tests.

Does the Practice Exam Have to Be Completed in One Sitting?

No. We provide “Save and Resume” functionality so you can return to the test later for completion.

Do I Get a Score and Rationale for Each Exam?

Yes. When you finish the test, at the bottom of the test, click on “Submit Your Answers” and you will be shown your results instantly. The rationales to each question can be seen by scrolling down.

Is the Practice Exam Instantly Available?

Yes! All our exams are instantly available online wherever internet is available. After you complete your purchase, you’ll receive an email containing your login details to the CCO Gradebook.

Can I Print the ICD-10-CM Practice Exam?

Yes, we provide a printable version of the ICD-10-CM Practice Exam but you will need to return to the online version later to input your answers and receive your score and rationale.

What Is the Refund or Cancellation Policy?

Due to the instant availability of internet-based training, CCO does not provide refunds or cancellations on any of our products including Courses, Review Blitzes, Practice Exams, Bundles, CEU Classes, Combos or CCO Club payments.

Where Can I Learn More About CCO?

Since 1999, we’ve been proudly training thousands of students to help them pass their certification exams. If you feel the need to see examples of our teaching style, please visit our YouTube channel with hundreds of videos and over 2 million views. If you would like to read past student reviews on our products, you’re welcome to read through hundreds of testimonials.