Free Certified Orthopedic Surgery Coder (COSC) Exam Questions and Answers
Certified Orthopedic Surgery Coder (COSC) is part of AAPC coding credentials. AAPC credentials certify coding accuracy against the current CPT, ICD-10-CM and HCPCS Level II code sets, and the exams are open book — three current-year manuals, one of each.
The first 10 questions on this page are free to read, answers included — no account and no card. A plan opens the rest of the bank, the full timed practice test and your weak-topic reporting.
Last updated: September 15, 2026
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- 130 mins · 70%
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Question #1
A 65-year-old patient undergoes a total knee arthroplasty. What is the appropriate code for this procedure?
Please select an optionIncorrectCorrect answer: B
27447 is the code for total knee arthroplasty (replacement), which is appropriate for this scenario.
Was this answer correct?Question #2
During a hip replacement surgery, the surgeon performs a femoral head replacement. What is the correct coding?
Please select an optionIncorrectCorrect answer: D
Code 27132 is used for the hip joint replacement with a head replacement, which applies in this scenario.
Was this answer correct?Question #3
If a patient has a complex fracture that requires internal fixation, what should be included in coding?
Please select an optionIncorrectCorrect answer: B
Both the fracture and the fixation must be coded to accurately represent the procedure performed.
Was this answer correct?Question #4
A patient presents with a fracture of the distal radius and it is treated non-operatively. What is the correct code?
Please select an optionIncorrectCorrect answer: D
The non-operative treatment of a distal radius fracture is coded as 813.41 for closed treatment without manipulation.
Was this answer correct?Question #5
In coding for spinal surgeries, what key factor must be identified?
Please select an optionIncorrectCorrect answer: A
The level of the spine operated on is critical for accurate coding of spinal surgeries.
Was this answer correct?Question #6
A patient requires a revision of a total hip arthroplasty due to infection. Which code is appropriate?
Please select an optionIncorrectCorrect answer: C
Code 27487 specifically identifies the revision of total hip arthroplasty, addressing complications like infections.
Was this answer correct?Question #7
What is the correct coding for a bilateral knee arthroscopy?
Please select an optionIncorrectCorrect answer: C
Code 29882 is used for a bilateral procedure, specifically knee arthroscopy.
Was this answer correct?Question #8
A patient had a closed reduction of a humeral fracture. The physician also provided a cast. How should this be coded?
Please select an optionIncorrectCorrect answer: B
Both the closed reduction and application of a cast need to be coded as they are part of the same treatment.
Was this answer correct?Question #9
If a patient undergoes surgery for an arthritic condition resulting in synovectomy, what is the code?
Please select an optionIncorrectCorrect answer: B
The code for arthroscopic synovectomy is 29875, used for conditions such as arthritis.
Was this answer correct?Question #10
When coding for joint injections, which additional factors are necessary?
Please select an optionIncorrectCorrect answer: A
All factors including type of injection, dosage, and patient characteristics must be considered for accurate coding.
Was this answer correct?
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Other AAPC certifications
- Certified Hematology and Oncology Coder (CHONC) (opens in a new tab)
- Certified Clinical Medical Assistant (CCMA) (opens in a new tab)
- Certified Compliance Professional (CCP) (opens in a new tab)
- Certified Ambulatory Surgery Center Coder (CASCC) (opens in a new tab)
- Certified Emergency Department Coder (CEDC) (opens in a new tab)
- Certified Interventional Radiology and Cardiovascular Coder (CIRCC) (opens in a new tab)
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FAQ
Learn More: https://www.aapc.com/certifications
- Q1: What is the Certified Orthopedic Surgery Coder (COSC) exam?
- A: Certified Orthopedic Surgery Coder (COSC) is a AAPC certification exam. Judging by the questions in our bank, it concentrates on coding, patient, fracture, code and knee.
- Q2: What topics does the Certified Orthopedic Surgery Coder (COSC) exam cover?
- A: Questions in our Certified Orthopedic Surgery Coder (COSC) bank cluster around coding, patient, fracture, code, knee, arthroplasty, shoulder and procedure. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for Certified Orthopedic Surgery Coder (COSC)?
- A: Work through the Certified Orthopedic Surgery Coder (COSC) practice questions here, checking your answer on each one, then sit the practice test to rehearse the exam under timed conditions before the real thing.
- Q4: Are these real Certified Orthopedic Surgery Coder (COSC) exam questions?
- A: They are drawn from officially released past questions and from community members who have sat Certified Orthopedic Surgery Coder (COSC). Answers are verified and updated weekly.
- Q5: Where do I register for the Certified Orthopedic Surgery Coder (COSC) exam?
- A: Register through AAPC directly at https://www.aapc.com/certifications. Exampractice is not affiliated with AAPC and does not administer the exam.
- Q6: Is there a free Certified Orthopedic Surgery Coder (COSC) sample?
- A: Yes. Every Certified Orthopedic Surgery Coder (COSC) page shows a free sample of real questions. Upgrading opens the full bank and the practice test.
- Q7: What are AAPC Certification Exams?
- A: AAPC (American Academy of Professional Coders) Certification Exams validate your expertise in medical coding, billing, auditing, compliance, and practice management within the healthcare industry.
- Q8: Why should I pursue AAPC Certification?
- A: AAPC Certification enhances your professional credibility, demonstrating your skills and knowledge in medical coding and healthcare administration. This can lead to better job opportunities, higher salaries, and career advancement.
- Q9: What are the benefits of AAPC Certification?
- A: Benefits include recognition of your expertise, improved job performance, access to exclusive resources, continuing education opportunities, and staying current with the latest industry standards and practices.
- Q10: Who should take AAPC Certification Exams?
- A: Medical coders, billers, auditors, compliance officers, and healthcare administrators should consider these certifications to validate their skills and advance their careers in the healthcare industry.
- Q11: What types of AAPC Certification Exams are available?
- A: AAPC offers various certification paths, including Certified Professional Coder (CPC), Certified Outpatient Coder (COC), Certified Inpatient Coder (CIC), and many specialty certifications tailored to specific healthcare roles and expertise levels.
- Q12: How do I prepare for AAPC Certification Exams?
- A: Preparation can include official AAPC training courses, study guides, practice exams, and hands-on experience in medical coding and healthcare management.
- Q13: Where can I take AAPC Certification Exams?
- A: AAPC Certification Exams can be taken at authorized testing centers worldwide or online, providing flexibility to fit your schedule and location.
- Q14: How do AAPC Certifications impact my career?
- A: AAPC Certifications significantly boost your career by demonstrating your expertise to employers, making you a more competitive candidate for advanced roles and promotions in the healthcare industry.
- Q15: Are there any prerequisites for AAPC Certification Exams?
- A: Some exams may have prerequisites, such as foundational knowledge or prior certifications. Check the specific requirements for each certification path on the AAPC website.
- Q16: How often do I need to recertify for AAPC Certifications?
- A: AAPC Certifications typically require continuing education units (CEUs) and recertification every two years to ensure that certified professionals stay updated with the latest industry standards and practices.