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Quizzes > Health & Medicine

Medical Coding Quiz: Check Your Billing and Coding Basics

Quick, free medical billing and coding test with instant results.

Editorial: Review CompletedCreated By: Ramesh KhatriUpdated Aug 25, 2025
Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art illustrating a quiz on Medical Billing and Coding.

This medical coding quiz helps you check core skills in ICD-10, CPT, HCPCS, and claims with 15 quick multiple-choice questions. See what you know, spot gaps, and get instant results. For more focused practice, try the icd 10 quiz, the medical coding practice test, or the medical billing quiz.

Which ICD-10-CM convention indicates that a code should not be used with a listed code because the two conditions cannot occur together?
Excludes1 note
Excludes2 note
Use additional code note
Inclusion term
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In CPT coding, which modifier is used to indicate a significant, separately identifiable E/M service by the same physician on the same day as another procedure?
Modifier 59
Modifier 24
Modifier 25
Modifier 51
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In ICD-10-CM, the placeholder character used to allow for future code expansion is:
X
Y
Z
0
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Which HCPCS Level II code range primarily represents drugs administered other than oral method?
J-codes
L-codes
A-codes
E-codes
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The CMS-1500 claim form is primarily used for billing:
Professional services
Institutional outpatient facility fees only
Retail pharmacy claims
Facility inpatient services
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In ICD-10-CM injury coding, the 7th character 'A' typically denotes:
Complication
Subsequent encounter
Sequela
Initial encounter
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Which CPT modifier is used to indicate a distinct procedural service not normally reported together with other services?
Modifier 51
Modifier 59
Modifier 26
Modifier 52
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ICD-10-CM laterality is best represented by which character position in most diagnosis codes when applicable?
Third character
Final character
First character
Fifth character
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Under 2021 E/M office visit guidelines, level selection for codes 99202-99215 can be based on:
Face-to-face time only
Medical decision making only
History and exam only
Medical decision making or total time on the date of encounter
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For Medicare, the form used to notify beneficiaries of potential noncoverage for a service is the:
ABN (Advance Beneficiary Notice)
EOB (Explanation of Benefits)
ERA (Electronic Remittance Advice)
NCD (National Coverage Determination)
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The HIPAA standard electronic format for professional claims submission is:
277CA
835
837P
837I
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ICD-10-CM combination codes are used to:
Report external causes of injury only
Indicate laterality and encounter type
Classify two diagnoses or a diagnosis with an associated complication
Represent services and procedures
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Medical necessity on a claim is best demonstrated by:
Appending modifier 59 to all procedures
Adding a Z code to every service
Appropriate diagnosis codes linking to the billed services
Using the highest-paying CPT code available
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Which CPT modifier indicates a staged or related procedure by the same physician during the postoperative period?
79
76
78
58
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A claim denial citing CO-97 typically indicates:
Timely filing limit exceeded
Service is included in the allowance for another service/procedure
Coordination of benefits required
Patient not covered by this payer
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For outpatient facility billing under OPPS, the -JW modifier is used to report:
Therapeutic infusion initial hour
Telehealth services
Bilateral procedures
Discarded amount of a single-use drug
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In ICD-10-CM, poisoning, adverse effect, and underdosing are distinguished in which code block?
R00-R99
V00-Y99
S00-T14
T36-T50
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Under Medicare rules, incident-to services in the office setting require which level of supervision?
Direct supervision
No supervision required
Personal supervision
General supervision
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The purpose of an LCD (Local Coverage Determination) is to:
Set national payment rates
Replace NCDs
Assign CPT codes to new technologies
Define coverage criteria for services at the MAC level
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In OPPS, clinical laboratory tests paid under the CLFS are generally:
Not packaged and paid separately from OPPS when billed appropriately
Denied unless billed with a surgical procedure
Paid only when modifier 59 is appended
Always packaged into APC payment
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Learning Outcomes

  1. Analyze common ICD-10 codes for accurate billing
  2. Evaluate appropriate CPT coding scenarios
  3. Master claim submission protocols and guidelines
  4. Identify billing errors and compliance issues
  5. Demonstrate understanding of HCPCS Level II codes
  6. Apply best practices in healthcare claims processing

Cheat Sheet

  1. Master the ICD-10-CM Coding Guidelines - Dive into the official rules to make sure every diagnosis is coded with pinpoint accuracy and the full complement of characters, including those tricky 7th characters. Think of it like unlocking cheat codes in a video game - each extra character levels up your claim's precision.
  2. Understand the Structure of ICD-10-PCS Codes - Break down the seven-part alphanumeric puzzle so each character reveals a piece of the procedure story, from the body system to the exact operation performed. It's like reading a secret map where every symbol guides you to the treasure of accurate coding.
  3. Differentiate Between CPT and HCPCS Level II Codes - CPT codes capture clinical services and medical procedures, while HCPCS Level II steps in for supplies and equipment, like wheelchairs or prosthetics. Knowing which code set to choose is as crucial as picking the right tool for a DIY project - get the match wrong, and your claim falls apart. CPT vs HCPCS Comparison
  4. Apply the 'Medical Necessity' Principle in Coding - Always align your chosen codes with the patient's condition to demonstrate that each service was essential, not just optional. Picture yourself as a detective gathering evidence: the stronger your documentation, the smoother your claims glide through approval. Medical Necessity Guide
  5. Recognize Common Billing Errors to Avoid Claim Denials - From typos in patient data to mismatched codes or missing signatures, little mistakes can trigger big denials. Think of regular audits as your secret weapon - spotting and fixing errors early keeps your revenue cycle on track. Top Billing Errors
  6. Stay Updated with Annual Code Set Changes - Codebooks evolve every year with new entries and tweaks, so staying current is like keeping your phone's software up-to-date - essential for peak performance. Make a habit of reviewing update summaries to avoid coding blind spots. Annual Code Updates
  7. Utilize Modifiers Correctly in CPT Coding - Modifiers are the spice that adds flavor to a base code, indicating extras like multiple procedures or altered services. Misplacing a modifier is like adding salt instead of sugar - suddenly the whole dish (or claim) tastes off. Guide to CPT Modifiers
  8. Understand the Importance of Documentation in Coding - Clear, thorough notes justify every code and defend your work in audits or appeals. Think of your clinical documentation as a storyboard: the more detailed, the more convincing the narrative. Documentation Best Practices
  9. Learn the Process of Claim Submission and Follow-Up - Master each step from patient verification to code entry and then monitor your claim's journey to payment. Following up is like tracking a pizza delivery - stay on top of it and you'll know exactly when it arrives. Claim Submission Steps
  10. Adhere to HIPAA Regulations in Medical Billing - Protect patient privacy by following HIPAA's rules for handling sensitive health information, because confidentiality is non-negotiable. Consider it the gold standard handshake that builds trust with patients and payers alike. HIPAA Compliance Essentials
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