Question 1
A coding specialist reviews an inpatient operative report describing removal of an entire body part. Which ICD-10-PCS root operation best describes this procedure?
Show answer & explanation
Correct answer: B - Resection
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The MCBS exam has 150 questions and runs 2 hours.
These 10 free MCBS questions are organized by exam domain, so you can see how each part of the Certified Medical Coding and Billing Specialist blueprint is tested. Reveal the answer and explanation under each question.
A coding specialist reviews an inpatient operative report describing removal of an entire body part. Which ICD-10-PCS root operation best describes this procedure?
Correct answer: B - Resection
A patient undergoes a procedure in which a physician places a synthetic material to replace a portion of a body part. Which ICD-10-PCS root operation concept applies?
Correct answer: A - Replacement
A physician documents type 2 diabetes mellitus with diabetic chronic kidney disease. The coding professional should first determine the correct ICD-10-CM diabetes combination category because:
Correct answer: A - Combination codes may link diabetes with associated complications when documentation supports the relationship
A coder sees a diagnosis documented as probable pneumonia on an outpatient physician visit. What is the most appropriate coding approach?
Correct answer: B - Code the signs, symptoms, and confirmed conditions documented for the encounter rather than the uncertain diagnosis
A discharge summary contains conflicting documentation from two providers regarding the principal diagnosis. What should the coder do before final code assignment?
Correct answer: C - Query the provider for clarification when documentation is conflicting or unclear
Which statement correctly describes the purpose of ICD-10-CM and ICD-10-PCS coding conventions?
Correct answer: A - They provide standardized rules for accurate code selection and reporting
A claim is denied because the payer states the service was not medically necessary. Which step is most appropriate for reviewing the denial?
Correct answer: B - Review payer requirements, documentation, and denial reason before determining the next action
A medical billing specialist calculates a clean claim rate. The formula is clean claims divided by total submitted claims. If 920 of 1,000 claims are clean, what is the clean claim rate and the best interpretation?
Correct answer: B - 92%; the majority of claims passed initial processing without error
A billing specialist notices repeated claim rejections caused by missing prior authorization. Which improvement is most likely to prevent future denials?
Correct answer: A - Create a front-end authorization verification process before claim submission
A patient has coverage through a commercial insurer and also qualifies for another insurance plan. Which process determines which payer is responsible for payment first?
Correct answer: B - Coordination of benefits
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