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Quizzes > Quizzes for Business > Healthcare

ICD-10 Coding Practice Quiz Challenge

Master diagnosis coding with realistic questions

Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art depicting elements related to ICD-10 coding practice quiz.

Ready to boost your ICD-10 coding confidence? Joanna Weib invites you to tackle our ICD-10 coding practice quiz designed for students and professionals alike. This interactive quiz covers realistic medical scenarios and multiple-choice questions that reinforce diagnosis coding skills. Learners can explore related ICD-10 Medical Coding Knowledge Test or try a shorter 10-Question Knowledge Quiz for quick revision. All questions are fully editable in our intuitive editor, and more quizzes await to sharpen your expertise.

What is the first character of an ICD-10-CM code?
Symbol
Letter
Digit
Number
ICD-10-CM codes always begin with a letter which defines the chapter. Numbers and symbols are not used as the first character. This structure helps coders quickly identify the code category.
Which ICD-10-CM chapter contains codes for neoplasms?
Chapter II Neoplasms
Chapter I Certain Infectious Diseases
Chapter V Mental and Behavioural Disorders
Chapter IV Endocrine, Nutritional and Metabolic Diseases
Chapter II of ICD-10-CM covers neoplasms, including benign and malignant tumors. This chapter is specifically devoted to coding neoplastic conditions. Other chapters address infectious diseases, endocrine disorders, and mental health.
What is the ICD-10-CM code for Type 2 diabetes mellitus without complications?
E11.9
E11.65
E11.8
E10.9
E11.9 is the code for Type 2 diabetes mellitus without complications. E10.9 refers to Type 1 diabetes without complications. E11.8 and E11.65 indicate specific complications which are not present in this scenario.
In ICD-10-CM coding, what placeholder character is used to fill empty characters in a code?
X
Y
Q
Z
The character 'X' is used as a placeholder when a code requires a 7th character but fewer characters are available. It ensures the correct placement of the 7th character extension. Other letters are not used as placeholders.
What is the 7th character extension used for the initial encounter of an injury in ICD-10-CM?
P
D
A
S
The 7th character 'A' denotes an initial encounter for injuries. 'D' indicates a subsequent encounter and 'S' is used for sequela. 'P' is not a valid 7th character extension in ICD-10-CM.
What is the correct ICD-10-CM code for acute bronchitis, unspecified?
J21.0
J22
J20.8
J20.9
J20.9 is the code for acute bronchitis, unspecified. J21.0 specifies bronchiolitis due to RSV, and J22 is for unspecified respiratory infection. J20.8 refers to other specified acute bronchitis.
Which code represents unspecified obesity in ICD-10-CM?
E66.01
E66.3
E66.1
E66.9
E66.9 is the code for obesity, unspecified. E66.01 indicates morbid obesity due to excess calories, E66.1 is drug-induced obesity, and E66.3 is overweight, indicating different conditions.
A patient is diagnosed with a non-ST elevation myocardial infarction (NSTEMI). Which code is correct?
I21.4
I21.9
I21.3
I21.0
I21.4 is the code for NSTEMI. I21.0 refers to anterolateral STEMI, I21.3 to inferior wall STEMI, and I21.9 to unspecified acute MI, which is less specific than NSTEMI.
According to ICD-10-CM guidelines, if a provider documents 'suspected pneumonia,' how should it be coded?
Assign code R50.9 Fever, unspecified
Code J18.9 Pneumonia, unspecified
Use a screening code for pneumonia
Assign the code for the documented symptom (e.g., R05 for cough)
ICD-10-CM requires confirmed diagnoses for disease coding. Suspected conditions are not coded as definitive diagnoses; instead, coders assign codes for documented symptoms such as cough (R05).
What is the correct ICD-10-CM code for acute appendicitis without perforation or abscess?
K35.3
K35.80
K35.2
K36
K35.80 is acute appendicitis without perforation or abscess documented as unspecified. K35.2 denotes acute appendicitis with peritoneal abscess, and K36 is related to other appendicitis.
A patient presents with acute kidney failure, unspecified. What is the correct code?
N17.0
N17.9
N18.9
N19
N17.9 is acute kidney failure, unspecified. N17.0 is acute kidney failure with tubular necrosis, N18.9 is chronic kidney disease unspecified, and N19 is unspecified kidney failure.
Which ICD-10-CM code should be used for a routine infant examination without abnormal findings?
Z00.110
Z00.121
Z00.8
Z00.129
Z00.110 is the code for a health examination for an infant under 8 days old with no abnormal findings. Z00.121 and Z00.129 apply to older infants, and Z00.8 covers general exams with abnormal findings.
A patient slipped on ice at home and sprained an ankle. Which is the correct external cause code?
W01.0XXA
W00.1XXA
X59.0XXA
W00.0XXA
W00.0XXA is the code for slip, trip and fall due to ice and snow on the same level, initial encounter. W01.0XXA refers to slipping on wet/smooth surfaces, and X59.0XXA is unspecified external cause.
For a patient treated for the sequela of a healed burn, what 7th character is used?
A
S
D
Z
The 7th character 'S' is used for sequela, indicating a late effect of an injury. 'A' denotes initial encounter and 'D' subsequent encounter. 'Z' is not used as a 7th character extension.
When coding a laceration of the forearm with a foreign body, what is the correct approach?
Assign only the foreign body code
Assign a single code for the laceration only
Assign two codes: one for the laceration and one for the foreign body
Assign a code for a contusion instead
ICD-10-CM requires separate codes for an injury and any associated foreign body. You code the laceration first and then the code that specifically identifies the foreign body. Combining them under one code is not permitted.
A patient has Type 2 diabetes mellitus with diabetic chronic kidney disease stage 3. Which codes should be assigned?
E11.21 and N18.3
E11.22 and N18.3
E11.22 only
E13.22 and N18.3
E11.22 indicates Type 2 diabetes with diabetic chronic kidney disease. N18.3 specifies stage 3 chronic kidney disease. ICD-10-CM guidelines call for both codes to fully describe this condition.
A patient admitted for pneumonia develops acute respiratory failure. Which two codes represent the principal and secondary diagnoses?
J15.9 and J96.02
J96.02 and J15.9
J18.9 and J96.00
J96.00 and J18.9
Per ICD-10-CM sequencing guidelines, when both pneumonia and acute respiratory failure coexist and pneumonia is the reason for admission, pneumonia (J18.9) is principal, and respiratory failure (J96.00) is secondary.
A 10-year-old child suffers a concussion with loss of consciousness for 20 minutes, initial encounter. Which code is correct?
S06.0X2A
S06.0X2D
S06.0X3A
S06.0X0A
In S06.0X2A: the '2' denotes loss of consciousness of 18 - 30 minutes, and 'A' is the initial encounter. '0' denotes no loss of consciousness, '3' over 24 hours, and 'D' would be a subsequent encounter.
A patient has a Stage III pressure ulcer of the sacral region. What is the correct ICD-10-CM code?
L89.153
L89.159
L89.151
L89.154
L89.153 breaks down as L89 for pressure ulcer, .1 for sacral region, 5 for Stage III, and 3 as the laterality/unspecified location character. Other fourth and fifth digits denote different stages or locations.
A preterm infant born at 34 weeks gestation develops respiratory distress syndrome. Which codes are appropriate?
P22.0 only
P22.1 and P07.36
P07.35 only
P22.0 and P07.35
P22.0 codes respiratory distress syndrome of newborn. P07.35 specifies preterm newborn between 34 completed weeks of gestation. Both codes are required to fully capture the clinical scenario.
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Learning Outcomes

  1. Analyse clinical scenarios to select correct ICD-10 codes
  2. Identify code structures and conventions for precise coding
  3. Apply official guidelines to complex diagnostic cases
  4. Demonstrate proficiency in coding common medical conditions
  5. Evaluate coding choices to ensure compliance and accuracy
  6. Master chapter-based coding principles for diverse cases

Cheat Sheet

  1. Understand the structure of ICD-10 codes - Think of each code as a mini puzzle made up of seven alphanumeric characters that spell out section, body system and root operation. Once you break it down into its parts, reading codes feels more like solving a mystery than memorizing random digits. Explore the ICD-10 Procedure Coding System
  2. Familiarize yourself with coding conventions - Abbreviations like NEC ("Not Elsewhere Classifiable") and NOS ("Not Otherwise Specified") pop up everywhere, so know them by heart. Punctuation rules - like parentheses for nonessential modifiers - are your roadmap to precise coding. Review CMS coding conventions
  3. Apply the etiology/manifestation convention - Always list the underlying cause first, then the manifestation, following "code first" and "use additional code" notes like a pro. This keeps your sequencing tidy and prevents coding mix-ups down the line. Master the etiology/manifestation rule
  4. Interpret "with" and "in" correctly - In ICD-10 land, "with" or "in" means "associated with" or "due to," so they're not just filler words. Treat these connections seriously to capture the full clinical picture. Learn about "with" vs. "in"
  5. Utilize "see" and "see also" instructions - A "see" note steers you to one term for the best code, while "see also" clues you in to extra terms that might apply. Think of them as sidekicks that guide you to the perfect code. Follow "see" and "see also" tips
  6. Assign codes to the highest level of specificity - Don't stop short - use all required characters, including that important 7th character when needed. The more specific you are, the more accurate your claim and patient record will be. Check CMS specificity guidelines
  7. Differentiate between acute and chronic conditions - When both acute and chronic issues appear, always code the acute one first if they share the same indentation level. This rule keeps your code sequence logically organized. Distinguish acute vs. chronic
  8. Recognize conditions integral to a disease process - If a symptom is part of a disease, you don't need a separate code unless instructed otherwise. Avoid extra codes for things that are already built into the main diagnosis. Spot integral conditions
  9. Report each unique diagnosis code only once per encounter - Even if a condition affects both sides of the body, you only list the code once unless laterality codes exist. This keeps your billing clean and claim reviewers happy. Learn about single-code reporting
  10. Stay updated with official coding guidelines - ICD-10 rules evolve every year, so check the latest releases to keep your skills sharp and compliant. A quick monthly habit of scanning updates can save headaches later. Browse current ICD-10 coding updates
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