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Quizzes > Health & Medicine

Medical Coding Practice Test: Assess ICD-10, CPT, and Billing

Quick, free quiz with medical coding test questions. Instant results.

Editorial: Review CompletedCreated By: Tommy CabreraUpdated Aug 23, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art illustration for medical coding quiz with sample coding billing terminology questions on sky blue background

This medical coding practice test helps you confirm your ICD-10, CPT, and billing skills and see where to review. For extra practice, take a medical coding quiz, work through icd 10 practice questions, and build exam readiness with a cpc practice exam. You'll get quick feedback to guide your study.

Which code set is used in the U.S. to report diagnoses in outpatient and inpatient settings?
ICD-10-PCS
CPT Category II
HCPCS Level II
ICD-10-CM
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ICD-10-PCS codes are primarily used to report procedures in which setting?
Physician office
Ambulatory surgical center professional claim
Urgent care professional claim
Inpatient hospital
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CPT codes are maintained and published by which organization?
American Medical Association (AMA)
Centers for Disease Control and Prevention (CDC)
Office of Inspector General (OIG)
World Health Organization (WHO)
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HCPCS Level II codes are used to report which type of services or items?
Supplies, DME, and certain drugs
Inpatient surgical approaches
New technology add-on payments
Evaluation and Management complexity
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The seventh character in ICD-10-CM injury codes designates which element when applicable?
Episode of care such as initial, subsequent, or sequela
Severity modifier comparable to CPT modifier 25
Laterality of the injury
Facility type where care was delivered
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When selecting 2021+ outpatient E/M office visit codes 99202-99215, medical decision making is determined by which three elements?
History, exam, and counseling time
Site, severity, and duration
Problems, data, and risk
Number of systems reviewed, vitals, and chief complaint
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Which modifier is appropriate to override an NCCI edit for distinct anatomical sites when supported?
51
24
57
59
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Which code set defines durable medical equipment and supplies?
HCPCS Level II
MS-DRG
CPT Category III
ICD-10-PCS
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In the inpatient setting, the principal diagnosis is defined as the condition
With the highest relative weight for payment
That was present on admission but resolved
That required the most resources during the stay
Established after study to be chiefly responsible for admission
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An Advance Beneficiary Notice (ABN) is used to notify a Medicare beneficiary that
A service may not be covered and the patient may be financially responsible
The claim was processed as out-of-network
Their deductible has been met for the year
A secondary payer will coordinate benefits automatically
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When assigning ICD-10-PCS, which component describes the objective of the procedure?
Root operation
Approach
Body part
Device
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Which modifier is appropriate for a staged or related procedure during the postoperative period?
58
79
78
57
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In risk adjustment HCC coding, the diagnosis must be supported and captured at least how often to impact RAF for a given year?
Every visit in the year
Only during inpatient stays
Once per calendar year by a qualifying encounter
Once every two years
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When a drug is billed with a HCPCS J-code that represents 10 mg per unit, and 30 mg is administered, how many units should be billed?
10
1
30
3
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Which CPT modifier is used to indicate synchronous telemedicine services for eligible codes?
93
95
GT
PT
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What is the correct root operation in ICD-10-PCS for removing a portion of a body part without replacement?
Replacement
Resection
Removal
Excision
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Which modifier indicates a return to the operating room for a related procedure during the postoperative period?
76
78
77
24
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For split or shared visits in the facility setting for 2024, which clinician may bill the service under their NPI when both contribute, per current CMS policy?
Always the physician regardless of contribution
Always the APP regardless of contribution
The clinician who performs the substantive portion of MDM or more than half of total time, as defined by CMS
Whichever clinician signs the note last
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In ICD-10-CM, a sequela code is used to report
Subsequent routine aftercare following surgery
External cause of morbidity
Initial active treatment of an injury
Residual effect after the acute phase of an illness or injury
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In radiology, when a code descriptor states "with contrast," it generally refers to
Only gadolinium-based agents for MRI
Any oral contrast used for bowel opacification
Contrast material administered intravascularly, intra-articularly, or intrathecally
Only iodinated contrast for CT
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Study Outcomes

  1. Analyze realistic coding scenarios -

    Practice with sample exam questions drawn from a medical billing and coding practice test to sharpen your ability to assign correct diagnosis and procedure codes.

  2. Interpret medical terminology -

    Break down common prefixes, suffixes, and root words to accurately understand and code clinical documentation.

  3. Apply ICD-10 and CPT guidelines -

    Use standardized coding rules to select the most precise codes for diagnoses and procedures in our free medical coding practice test.

  4. Differentiate similar codes -

    Learn to distinguish between closely related diagnosis and procedure codes to minimize billing errors and ensure compliance.

  5. Evaluate your coding accuracy -

    Receive instant feedback on each answer to identify areas for improvement and track your progress on the medical coding assessment test.

  6. Strengthen exam preparedness -

    Simulate a timed sample medical coding exam environment to build confidence and readiness for actual certification tests.

Cheat Sheet

  1. ICD-10-CM Structure Mastery -

    Understanding the alphanumeric format, chapter organization, and sequencing of the ICD-10-CM is key to accurate diagnosis coding. Use the alphabetic index to pinpoint main terms, then verify codes in the tabular list - remember "Alpha to Table" as a mnemonic. (Source: CMS ICD-10-CM Official Guidelines)

  2. CPT Code Section Fundamentals -

    Familiarize yourself with the six CPT sections - Evaluation & Management, Anesthesia, Surgery, Radiology, Pathology & Laboratory, and Medicine - to quickly locate procedure codes in a sample medical coding exam. For E/M services, apply the "History, Exam, MDM" formula to ensure correct code selection. (Source: AMA CPT Professional Edition)

  3. HCPCS Level II Essentials -

    HCPCS Level II covers supplies, durable medical equipment, and drugs with alphanumeric codes (e.g., J-codes for injectable drugs) in your medical billing and coding practice test. Remember that letters A - V mark different categories - think "J logic" for injectables and "A order" for ambulance services. (Source: CMS HCPCS Manual)

  4. Medical Terminology Breakdown -

    Master prefixes, suffixes, and roots to decode complex terms - cardi(o)- for heart, -itis for inflammation, and gast(r)- for stomach - in your free medical coding practice test prep. A handy mnemonic is "Prefix + Root + Suffix = Complete Term." (Source: AHIMA's Medical Terminology Guide)

  5. Modifiers & Compliance Best Practices -

    Learn key modifiers like -25 (significant, separately identifiable E/M service) and -59 (distinct procedural service) to report accurate claims on a medical coding assessment test. Always cross-check with AMA and CMS guidelines to avoid audit flags and ensure ethical coding. (Source: AMA CPT & CMS Modifiers Manual)

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