ICD 10 Practice Test

ICD 10 Practice Test

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ICD 10 Practice Test

Updated for September 2026
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Prepare for your ICD-10 certification exam with our comprehensive free practice test. The ICD-10 (International Classification of Diseases, 10th Revision) coding system is the global standard for documenting diagnoses and procedures in healthcare. Whether you are pursuing CPC, CCS, or COC certification, mastering ICD-10-CM and ICD-10-PCS codes is essential for a successful medical coding career.

Our ICD-10 practice test features real exam-style questions covering diagnosis coding, procedure coding, medical terminology, anatomy, and official coding guidelines. With detailed explanations for every answer, you will build confidence and identify knowledge gaps before exam day. Start practicing now to achieve your 70% or higher passing score and launch your healthcare career!

📝
100-107
Questions
⏱️
4
Hours
🎯
70%
Passing Score
💵
$299-499
Exam Fee
What changed for ICD-10-CM/PCS and coding certification in 2026
  • FY2027 ICD-10-CM update takes effect October 1, 2026. The CMS/NCHS release adds 190 new diagnosis codes, deletes 30 and revises 4, taking the code set from 74,719 to 74,879 codes for services dated October 1, 2026 through September 30, 2027. (source) (source)
  • FY2027 ICD-10-PCS (October 1, 2026): 101 new procedure codes, 3 revised titles and 38 deleted codes, for a total of 79,256 ICD-10-PCS codes (up from 79,193). PCS guidelines A6, A7, B3.3, B3.4a, B3.5 and E1.a were updated. (source)
  • FY2027 files were posted early: the FY27 ICD-10-CM Official Guidelines for Coding and Reporting went up on the NCHS FTP site on June 8, 2026, the code tables/index and addenda on June 16, 2026, and the FY2027 conversion table on August 13, 2026. (source)
  • FY2026 (the code set in force until September 30, 2026): ICD-10-CM added 487 codes, deleted 28 and revised 38 (74,260 to 74,719 codes); ICD-10-PCS added 156 codes and deleted 27 (79,115 codes total). (source) (source)
  • AAPC CPC exam (2026): 100 multiple-choice questions in one four-hour sitting, 70% (70 correct) to pass, taken online with a live remote proctor or at a testing center; the exam costs $425 for one attempt or $499 for two attempts (USD, AAPC membership required). (source)
  • AHIMA CCS exam (2026): 107 questions (97 scored + 10 pretest, multiple choice plus medical scenarios), four hours, passing scaled score 300; fee $299 for AHIMA members / $399 for non-members. The entry-level CCA is 105 questions (90 scored) in two hours for $199 / $299. (source) (source)
  • AHIMA code-book rule change: all CCS and CCA exams delivered on or after May 1, 2026 require the 2026 code books from AHIMA's approved list; candidates without the correct books are not allowed to test and forfeit the exam fee. (source)
  • ICD-11 status: WHO's ICD-11 has been in effect internationally since January 1, 2022, but it has not been adopted as a HIPAA code set in the United States. The NCVHS ICD-11 workgroup issued Phase I findings on December 6, 2023 and a recommendation letter to HHS on April 12, 2024 (HHS responded August 19, 2024); ICD-10-CM/PCS remain the required US code sets, as the FY2027 releases confirm. (source) (source)

Last verified: September 17, 2026 against CMS, CDC/NCHS, AAPC, AHIMA, WHO and NCVHS.

ICD-10 certification demonstrates your expertise in medical coding and opens doors to careers in hospitals, physician offices, insurance companies, and healthcare consulting. Certified coders earn 20-30% higher salaries than non-certified peers.

If you are searching for a ICD 10 practice questions, start with the free questions on this page: every answer comes with an explanation, and the study notes below cover the ICD 10 exam topics in order.

ICD 10 Practice Test Questions

Prepare for the ICD 10 - International Classification of Diseases 10th Revision exam with our free practice test modules. Each quiz covers key topics to help you pass on your first try.

ICD 10 Advanced Topics
ICD 10 Exam Questions covering Advanced Topics. Master ICD 10 Test concepts for certification prep.
ICD 10 Body Systems
Free ICD 10 Practice Test featuring Body Systems. Improve your ICD 10 Exam score with mock test prep.
ICD 10 Coding Basics
ICD 10 Mock Exam on Coding Basics. ICD 10 Study Guide questions to pass on your first try.
ICD 10 Coding Guidelines
ICD 10 Test Prep for Coding Guidelines. Practice ICD 10 Quiz questions and boost your score.
ICD 10 Exam Fundamentals
ICD 10 Questions and Answers on Exam Fundamentals. Free ICD 10 practice for exam readiness.
ICD 10 ICD
ICD 10 Mock Test covering ICD. Online ICD 10 Test practice with instant feedback.
ICD 10 Practical Applications
Free ICD 10 Quiz on Practical Applications. ICD 10 Exam prep questions with detailed explanations.
ICD 10 Practice Test
ICD 10 Practice Questions for Practice Test. Build confidence for your ICD 10 certification exam.
ICD 10 Review and Assessment
ICD 10 Test Online for Review and Assessment. Free practice with instant results and feedback.
ICD 10 Z Codes and External Causes
ICD 10 Study Material on Z Codes and External Causes. Prepare effectively with real exam-style questions.

ICD-10 Coding Flashcards

Click cards to reveal answers - master key ICD-10 coding concepts

📚 📝What is the purpose of the 7th character in ICD-10-CM?
The 7th character provides additional information about the encounter type (A=initial, D=subsequent, S=sequela) or specific clinical details like fracture healing status.
🎯 🏥How is an ICD-10-PCS code structured?
ICD-10-PCS codes have 7 characters: Section, Body System, Root Operation, Body Part, Approach, Device, and Qualifier. Each position has specific values.
💡 ⚕️What is the sequencing rule for manifestation codes?
Manifestation codes (in brackets) must be sequenced after the underlying condition. The etiology code comes first, followed by the manifestation code.
🔑 📊What does NEC mean in ICD-10-CM?
NEC (Not Elsewhere Classified) indicates the documentation specifies a condition but no specific code exists. Use when documentation is specific but codes are not.

ICD-10 Exam Study Guide

Master all aspects of ICD-10 medical coding with our comprehensive study guide. Each section covers essential topics you need to know for the certification exam.

📚 ICD-10 Basics

What is ICD-10 and why is it important?
ICD-10 (International Classification of Diseases, 10th Revision) is the global standard for coding diagnoses (ICD-10-CM) and inpatient procedures (ICD-10-PCS). It enables accurate medical records, proper reimbursement, and healthcare data analysis.
What certifications require ICD-10 knowledge?
Major certifications include CPC (Certified Professional Coder), CCS (Certified Coding Specialist), CCS-P (Physician-based), COC (Certified Outpatient Coder), and CIC (Certified Inpatient Coder) from AAPC and AHIMA.
How many codes are in ICD-10-CM and ICD-10-PCS?
ICD-10-CM contains 74,879 diagnosis codes (FY2027, effective October 1, 2026) organized in 21 chapters. ICD-10-PCS has 79,256 procedure codes built from 7-character alphanumeric combinations.
What is the difference between ICD-10-CM and ICD-10-PCS?
ICD-10-CM codes diagnoses and is used in all healthcare settings. ICD-10-PCS codes procedures and is only used for inpatient hospital services. Outpatient procedures use CPT codes instead.

📝 ICD-10 Format

What is the structure of ICD-10-CM codes?
ICD-10-CM codes have 3-7 alphanumeric characters. The first character is always a letter (A-Z except U). Characters 2-3 are numeric. Characters 4-7 provide additional specificity including laterality and encounter type.
How long is the ICD-10 certification exam?
Exam length varies by certification: CPC is 4 hours for 100 questions, CCS is 4 hours for 107 questions (97 scored), and COC is 5 hours for 100 questions. All exams are open-book format.
What question types appear on ICD-10 exams?
Questions include multiple-choice code selection, medical scenario interpretation, guideline application, and operative report coding. Both ICD-10-CM and ICD-10-PCS content is tested based on the specific certification.
Can I use code books during the exam?
Yes, ICD-10 certification exams are open-book. You may bring your ICD-10-CM, ICD-10-PCS, CPT, and HCPCS code books. No highlighting or extensive notes are permitted in most exams.

📦 ICD-10 Registration

How do I register for an ICD-10 certification exam?
Register through AAPC (aapc.com) or AHIMA (ahima.org) depending on your chosen certification. Create an account, select your exam type, choose a testing location or online proctoring, and pay the exam fee.
What are the prerequisites for ICD-10 certification?
Most certifications have no strict prerequisites, but completing an accredited medical coding program is recommended. AAPC offers an apprentice designation if you pass without work experience.
Where can I take the ICD-10 certification exam?
Exams are available at authorized testing centers nationwide or via online proctoring from home. Online exams require a webcam, microphone, and stable internet connection with ID verification.
How much does ICD-10 certification cost?
Exam fees range from $299-499 depending on certification type and membership status (CPC: $425 for one attempt or $499 for two; CCS: $299 for AHIMA members, $399 for non-members). Training programs and code books are additional costs.

✅ ICD-10 Results

What score do I need to pass the ICD-10 exam?
Most ICD-10 certification exams require 70% to pass. AAPC CPC and COC exams require 70%, while AHIMA CCS and CCA exams use scaled scoring with a passing score of 300.
When will I receive my exam results?
Online proctored exams provide preliminary results immediately. Testing center results are typically available within 7-10 business days. Final certification is issued after official score verification.
Can I retake the exam if I fail?
Yes, you can retake the exam after paying a retake fee (typically $300-350). There is usually no mandatory waiting period. Some organizations allow unlimited retakes within a membership year.
How long is my ICD-10 certification valid?
Most certifications are valid for 2 years. Renewal requires earning 36 continuing education units (CEUs) and paying a renewal fee. CEUs can be earned through courses, conferences, and workshops.

🔧 ICD-10 Preparation

How should I prepare for the ICD-10 certification exam?
Complete an accredited coding program, study official coding guidelines thoroughly, practice with code books, take practice exams, and master medical terminology. Plan 3-6 months of dedicated study time.
What study materials are recommended?
Essential materials include current ICD-10-CM and ICD-10-PCS code books, CPT codebook, official coding guidelines, anatomy resources, and practice exams. AAPC and AHIMA offer official study guides.
How can I improve my coding speed?
Tab your code books for quick reference, memorize common codes and guidelines, practice timed coding exercises, learn the alphabetic index first then verify in tabular list, and use consistent highlighting methods.
What topics should I focus on most?
Focus on ICD-10-CM chapters 1-21 structure, coding guidelines, seventh character usage, manifestation codes, root operations for ICD-10-PCS, anatomy review, and medical terminology prefixes/suffixes.

ICD-10 Exam Score Calculator

Total Scored Questions
150

Estimated score calculation

105 out of 150 correct
70%

Required to Pass: ~70% (Estimated)

Your Score: 105 correct ✓ PASS

Expect to invest $1,200-3,500 for initial certification including training, materials, and exam fees. This investment typically pays for itself within 3-6 months through higher earnings.

ICD-10 Coder Career Paths

Explore the diverse career opportunities available to certified ICD-10 medical coders.

ICD-10 Exam Day Checklist

Valid government-issued photo ID
ICD-10-CM and ICD-10-PCS code books
CPT and HCPCS code books
Exam confirmation/admission letter
Silent watch for time management
Pencils and eraser (if paper exam)
Light snacks and water for breaks
Calculator (non-programmable)

Ready to Pass Your ICD-10 Certification?

Start your free ICD-10 practice test now and build the confidence you need to ace your certification exam. Join thousands of successful medical coders who prepared with us!

ICD-10 Certification Renewal

Maintain your ICD-10 certification by meeting renewal requirements every two years.

📅
Renewal Cycle Every
2 Years
📚
CEUs Required
36 CEUs
💰
Renewal Fee
$100-200

Earn CEUs through AAPC/AHIMA webinars, online courses, local chapter meetings, or healthcare conferences. Many employers provide CEU opportunities as part of professional development.

ICD 10: Pros and Cons

Pros

  • tb test icd 10 — iCD 10 exam preparation strengthens your knowledge across all domains
  • Passing the exam proves competency to employers and clients
  • Study materials and practice tests are widely available
  • Exam-based credentials are portable across states and employers
  • Clear exam objectives help focus your study plan effectively

Cons

  • Exam anxiety can affect performance — practice tests help reduce it
  • Registration fees are non-refundable if you miss your test date
  • Limited retake opportunities may apply with waiting periods
  • Exam content updates periodically — use current study materials
  • Testing center availability may require advance scheduling

ICD 10 Questions and Answers

What is the ICD-10 coding system?

ICD-10 (International Classification of Diseases, 10th Revision) is the standardized medical coding system used in the United States for classifying diagnoses, symptoms, and procedures. ICD-10-CM covers clinical diagnoses with 74,879 codes in the FY2027 release (effective October 1, 2026), while ICD-10-PCS contains 79,256 procedure codes used exclusively in inpatient hospital settings. All HIPAA-covered entities have been required to use ICD-10 since October 2015.

What format does the ICD-10 certification exam follow?

The format depends on which certification you pursue. The AAPC's CPC exam consists of 100 multiple-choice questions to be completed in 4 hours. The AHIMA's CCS exam includes both multiple-choice and fill-in-the-blank questions covering ICD-10-CM, ICD-10-PCS, and CPT coding. Both exams are proctored and require applying codes to real-world clinical scenarios rather than simple memorization.

How many questions are on ICD-10 certification exams?

The CPC exam from AAPC contains 100 multiple-choice questions. The AHIMA CCS exam has 107 questions (97 scored plus 10 unscored pretest items) split between multiple-choice items and medical scenarios. The AHIMA CCA exam, an entry-level option, contains 105 questions (90 scored). Each exam allocates different time limits, with the CPC and CCS allowing 4 hours and the CCA 2 hours.

What is the passing score for ICD-10 certification exams?

The AAPC CPC exam requires a score of 70% or higher to pass, meaning you must answer at least 70 out of 100 questions correctly. AHIMA uses a scaled scoring method for the CCS and CCA exams, with scores ranging from 100 to 400 and a passing threshold typically set at 300. AHIMA does not publish a fixed percentage-based passing score.

What topics are covered on ICD-10 certification exams?

ICD-10 certification exams cover ICD-10-CM diagnosis coding, ICD-10-PCS procedure coding, CPT and HCPCS Level II coding, medical terminology, anatomy and physiology, coding guidelines, compliance and regulatory standards, and reimbursement methodologies. You will also be tested on reading operative reports, applying modifier codes, and understanding payer-specific documentation requirements across outpatient and inpatient settings.

What are the eligibility requirements for ICD-10 certification?

The AAPC CPC exam has no strict prerequisites, though AAPC recommends completing a medical coding training program. Without two years of professional experience, you receive a CPC-A (Apprentice) credential until the experience requirement is met. AHIMA's CCS exam recommends at least three years of coding experience or completion of an AHIMA-approved coding education program. The entry-level CCA has no formal experience requirement.

How do I register for an ICD-10 certification exam?

For AAPC certifications, create an account at aapc.com, select your exam, and pay the exam fee of $425 for one attempt or $499 for two attempts (AAPC membership is required). For AHIMA certifications, apply through ahima.org with fees around $299 for members or $399 for non-members. Both organizations offer online proctored exams and in-person testing at approved locations throughout the year.

What are the best preparation strategies for ICD-10 certification exams?

Focus on timed practice exams to build speed, since time management is the most common reason candidates fail. Tab and highlight your codebooks thoroughly before exam day, as both major exams are open-book. Study the Official ICD-10-CM Guidelines for Coding and Reporting published by CMS, practice coding from real operative reports, and memorize the structure of ICD-10 chapters so you can locate codes quickly during the test.

How should I use the ICD 10 practice questions to prepare?

Start with the ICD 10 practice questions to find your weak areas, read the explanations for every question you miss, then retake it until you score consistently above the passing mark for the ICD 10 exam.

Is there a free ICD chapter 18 sample practice questions?

Yes. This page includes a free ICD chapter 18 sample practice questions with an explanation for every answer, matched to the current ICD 10 exam format. You can take it online with instant scoring and review the topics you miss.
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