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Master ICD-10 Coding Scenarios: Test Your Skills Now

Ready for ICD-10-CM coding practice questions? Dive in and challenge yourself!

Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
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Are you ready to master icd-10 coding scenarios with answers? Dive into our free ICD-10 coding scenarios quiz and test yourself on realistic cases that mirror everyday chart entries. You'll get instant feedback, discover key tips for accurate icd-10-cm coding practice questions, and even explore strategies in a handy icd-10-cm practice questions and answers pdf. Hone your ability to pinpoint coding errors, reinforce knowledge of diagnostic chapters, and speed up workflows. Start with our focused infectious and parasitic diseases quiz , then push your skills further with a range of dynamic medical coding test questions . Take the leap, test your acumen, and watch your confidence soar!

A patient presents with acute maxillary sinusitis. What is the correct ICD-10-CM code?
J01.20 Acute ethmoidal sinusitis
J01.00 Acute maxillary sinusitis, unspecified
J01.30 Acute sphenoidal sinusitis
J01.10 Acute frontal sinusitis
Acute maxillary sinusitis is specifically coded to J01.00 according to ICD-10-CM guidelines. The other codes refer to sinusitis of different anatomic locations. Always choose the code that matches the exact sinus involved. ICD10Data Reference
A patient with type 2 diabetes mellitus and obesity is seen for routine follow-up. Which is the correct ICD-10-CM code for type 2 diabetes mellitus without complications?
E11.65 Type 2 diabetes mellitus with hyperglycemia
E11.9 Type 2 diabetes mellitus without complications
E11.21 Type 2 diabetes mellitus with diabetic nephropathy
E10.9 Type 1 diabetes mellitus without complications
Type 2 diabetes mellitus without complications is coded to E11.9. Obesity is a coexisting condition but does not alter the diabetes code in this scenario. Other codes indicate specific complications or diabetes type. ICD10Data Reference
A patient is diagnosed with essential (primary) hypertension. What is the appropriate ICD-10-CM code?
I15.0 Secondary hypertension
I11.9 Hypertensive heart disease
I12.9 Hypertensive chronic kidney disease
I10 Essential (primary) hypertension
Essential (primary) hypertension without heart or kidney involvement is coded to I10 per ICD-10-CM conventions. Codes I11-I13 are used when there are specific cardiac or renal complications. Secondary hypertension has its own category. ICD10Data Reference
A 2-month-old infant receives routine immunization per the immunization schedule. Which ICD-10-CM Z code should be assigned?
Z00.121 Encounter for routine child health exam
Z02.89 Encounter for administrative examinations
Z00.129 Routine infant exam without abnormal findings
Z23 Encounter for immunization
Encounters for prophylactic immunization are categorized under Z23. The routine child health exam code (Z00.121) could accompany but is not primary for immunization. Z02.89 and Z00.129 cover administrative or general exams. ICD10Data Reference
A patient is seen in the ED after tripping and sustaining a closed fracture of the left radius. Which code is correct?
S52.502A Unspecified fracture of lower end of left radius, initial encounter
S52.600A Unspecified open fracture of unspecified radius, initial encounter
S52.502D Unspecified fracture of lower end of left radius, subsequent encounter
S52.501A Unspecified fracture of upper end of left radius, initial encounter
A closed, unspecified fracture of the lower end of left radius in the initial encounter is S52.502A. 'A' denotes initial visit for closed fracture. Option C is for subsequent encounters, and option B is upper end fracture. ICD10Data Reference
A patient is diagnosed with acute viral upper respiratory infection, unspecified. What ICD-10-CM code should be used?
J02.9 Acute pharyngitis, unspecified
B34.9 Viral infection, unspecified
J06.9 Acute upper respiratory infection, unspecified
J00 Acute nasopharyngitis (common cold)
J06.9 is the code for an unspecified acute upper respiratory infection. J00 and J02.9 specify locations (nasopharyngitis, pharyngitis). B34.9 is a general viral code not specific to URI. ICD10Data Reference
A patient with mild intermittent asthma is seen for routine follow-up. Which is the correct ICD-10-CM code?
J45.50 Severe persistent asthma, uncomplicated
J45.40 Moderate persistent asthma, uncomplicated
J45.30 Mild persistent asthma, uncomplicated
J45.20 Mild intermittent asthma, uncomplicated
Mild intermittent asthma without acute exacerbation is coded to J45.20. The other options describe different severity or persistence levels. Accurate severity classification is key in coding asthma. ICD10Data Reference
A patient sprains the lateral ligament of the right ankle during sports. What ICD-10-CM code is appropriate?
S93.401A Sprain of unspecified ligament of right ankle, initial encounter
S83.401A Sprain of unspecified ligament of right knee, initial encounter
S93.431A Sprain of lateral collateral ligament of right ankle, initial encounter
S93.401D Sprain of unspecified ligament of right ankle, subsequent encounter
An initial encounter for a lateral ankle ligament sprain is best captured by S93.431A; however, if the ligament is unspecified, S93.401A is correct. Here the scenario doesn't name the exact ligament, so S93.401A applies. Subsequent encounters use a 'D' suffix. ICD10Data Reference
A patient with type 2 diabetes mellitus has diabetic neuropathy. Which ICD-10-CM code is correct?
E11.65 Type 2 diabetes mellitus with hyperglycemia
E11.9 Type 2 diabetes mellitus without complications
E10.40 Type 1 diabetes mellitus with diabetic neuropathy
E11.40 Type 2 diabetes mellitus with diabetic neuropathy, unspecified
Type 2 diabetes with diabetic neuropathy is coded E11.40 per the combination code guidelines. E11.9 lacks complication detail, and E11.65 indicates hyperglycemia. Type 1 codes are not used for type 2 patients. ICD10Data Reference
A patient with chronic kidney disease stage 3 and hypertension is seen. What ICD-10-CM code combination is correct?
I12.9 Hypertensive chronic kidney disease, unspecified stage
I10, N18.3 Essential hypertension, stage 3 CKD
I12.9, N18.3 Hypertensive chronic kidney disease, stage 3
I13.10 Hypertensive heart and chronic kidney disease without heart failure
I12.9 is the hypertension with chronic kidney disease code, and N18.3 specifies stage 3 CKD. They must be reported together to capture both conditions. I13 codes require heart disease, which is absent here. ICD10Data Reference
A postoperative patient develops a wound infection after knee arthroplasty. Which ICD-10-CM code is correct?
T81.4XXA Infection following a procedure, initial encounter
T84.50XA Infection and inflammatory reaction due to internal joint prosthesis, initial encounter
T84.50XD Infection due to joint prosthesis, subsequent encounter
T84.54XA Mechanical complication of joint prosthesis, initial encounter
Infections of an internal joint prosthesis are coded to T84.50XA for the initial encounter. The general postprocedural infection code T81.4XXA is less specific. Subsequent encounters use a 'D' suffix. ICD10Data Reference
A patient presents with right-sided hemiplegia following a cerebral infarction. What is the correct ICD-10-CM code for the hemiplegia?
I69.351 Hemiplegia and hemiparesis following cerebral infarction affecting right non-dominant side
I63.9 Cerebral infarction, unspecified
G81.90 Hemiplegia, unspecified affecting unspecified side
I69.351 Hemiplegia and hemiparesis following cerebral infarction affecting right dominant side
Post-infarction hemiplegia is coded in the I69.- category. Side and dominance must be specified; most adults are right-handed, so non-dominant side is assumed if unspecified. G81 lacks etiology. ICD10Data Reference
A patient has allergic rhinitis due to grass pollen. Which ICD-10-CM code is appropriate?
J30.3 Other allergic rhinitis
J30.1 Allergic rhinitis due to pollen
J30.2 Other seasonal allergic rhinitis
J30.4 Allergic rhinitis, unspecified
Allergic rhinitis due to pollen is specifically assigned to J30.1. Other codes refer to different or unspecified allergic rhinitis. Etiology detail drives code selection. ICD10Data Reference
A bedridden patient develops a stage 2 pressure ulcer on the right heel. What is the appropriate ICD-10-CM code?
L89.623A Pressure ulcer stage code invalid format
L89.622 Pressure ulcer of left heel, stage 2
L89.623 Pressure ulcer of right heel, stage 2
L89.613 Pressure ulcer of right heel, stage 1
Pressure ulcer stage and site are coded together; right heel stage 2 is L89.623. Laterality is crucial, and the correct stage number must be used. ICD10Data Reference
A patient is admitted for viral pneumonia due to influenza. Which ICD-10-CM code best captures this diagnosis?
J10.0 Influenza with pneumonia, influenza virus identified
J11.1 Influenza with other respiratory manifestations, virus not identified
J12.9 Viral pneumonia, unspecified
J10.1 Influenza with other respiratory manifestations, influenza virus identified
Influenza with other respiratory manifestations, including pneumonia, when virus is identified, is J10.1. J12.9 is unspecified viral pneumonia without noted influenza. J11.1 is used when influenza virus isn't lab-confirmed. ICD10Data Reference
A patient receiving chemotherapy for breast cancer is admitted for anemia due to antineoplastic therapy. Which ICD-10-CM code is correct?
T45.1X5A Adverse effect of antineoplastic and immunosuppressive drugs, initial encounter
D64.81 Anemia due to antineoplastic chemotherapy
D63.0 Anemia in neoplastic disease
C50.912 Malignant neoplasm of unspecified site of left female breast
Anemia due to chemotherapy is specifically coded D64.81. D63.0 covers anemia in neoplastic disease but not therapy-induced. The T45 code captures adverse effect but treatment-related anemia is captured in D64.81. ICD10Data Reference
A patient presents with an acute myocardial infarction of the anterior wall that started two days ago. Which ICD-10-CM code is correct?
I21.03 ST elevation (STEMI) myocardial infarction of anterior wall, initial episode of care
I21.09 ST elevation (STEMI) myocardial infarction of other anterior wall, initial episode of care
I22.0 Subsequent STEMI of anterior wall
I21.4 Non-ST elevation (NSTEMI), initial episode of care
An initial STEMI of the anterior wall is coded to I21.03. The I22 category is for subsequent infarctions. I21.09 refers to other anterior sites. ICD10Data Reference
A newborn is diagnosed with congenital hypothyroidism. Which ICD-10-CM code should be used?
E03.1 Thyrotoxicosis with toxic single thyroid nodule
P28.5 Other respiratory and cardiovascular disorders specific to the fetus and newborn
P75.0 Congenital hypothyroidism
E03.2 Hypothyroidism due to medicaments and other exogenous substances
Congenital hypothyroidism in the newborn is categorized under P75.0. Endocrine disorders due to exogenous substances are E03.2 but do not apply here. P codes define newborn conditions. ICD10Data Reference
A patient is on mechanical ventilation for more than 24 consecutive hours. What is the correct ICD-10-PCS code for mechanical ventilation duration between 24 and 96 consecutive hours?
5A1955Z Performance of respiratory ventilation, greater than 96 consecutive hours
5A1935Z Performance of respiratory ventilation, less than 24 consecutive hours
5A1935Z Performance of respiratory ventilation, greater than 96 consecutive hours
5A1945Z Performance of respiratory ventilation, 24 - 96 consecutive hours
Ventilation between 24 and 96 hours is coded 5A1945Z in ICD-10-PCS. Under 24 hours is 5A1935Z, and over 96 hours is 5A1955Z. Accurate time duration is critical for correct PCS coding. CMS PCS Table
An adult patient is diagnosed with sepsis due to Escherichia coli. Which combination of ICD-10-CM codes is correct?
A41.9 Sepsis, unspecified organism
B96.20 Escherichia coli as the cause of diseases classified elsewhere
A41.5 Sepsis due to Escherichia coli
A41.51 Sepsis due to Escherichia coli, in conditions classified elsewhere
Sepsis due to E. coli is coded A41.5. B96.20 is used as an additional code when E. coli causes another condition but not sepsis. A41.51 covers sepsis in other conditions but has extra specification. ICD10Data Reference
A patient is admitted with COVID-19 pneumonia and acute respiratory distress syndrome. Which codes are appropriate?
U07.2 COVID-19 pneumonia, J80 acute respiratory distress syndrome
J12.82 COVID-19 pneumonia, J80 acute respiratory distress syndrome
J12.82 COVID-19 pneumonia only
U07.1 COVID-19, J12.82 COVID-19 pneumonia, J80 acute respiratory distress syndrome
U07.1 is the code for COVID-19 confirmed infection, J12.82 captures COVID pneumonia, and J80 codes ARDS. All three must be reported to reflect the full clinical picture. CDC COVID-19 Coding Guidelines
A patient returns for fitting and adjustment of a lower limb prosthesis. Which ICD-10-CM Z code applies?
Z47.1 Encounter for attention to artificial lower limb
Z47.82 Encounter for fitting and adjustment of other devices
Z47.0 Encounter for attention to artificial arm
Z47.89 Encounter for fitting and adjustment of other orthotic devices
Z47.89 covers fitting and adjustment of devices not separately classified, including lower limb prostheses. Z47.1 is not a valid code. Device-specific Z47 codes are limited to artificial arms. ICD10Data Reference
A patient's renal transplant is failing due to chronic rejection. Which ICD-10-CM code is correct?
T86.13 Failure and rejection of kidney transplant, unspecified
T86.12 Failure and rejection of kidney transplant, chronic
T86.11 Failure and rejection of kidney transplant, acute
Z94.0 Kidney transplant status
Chronic rejection of a renal transplant is coded T86.12. Acute rejection uses T86.11, and Z94.0 indicates transplant status only. Unspecified should not be used when chronic rejection is documented. ICD10Data Reference
During surgery, a patient experiences an intraoperative cardiac arrest. Which ICD-10-PCS code represents this complication?
5A12012 Cardiac arrest following a procedure
5A1D70Z Performance of CPR, external approach
5A12022 Shock during a procedure
5A02110 Destruction of cardiac conduction tissue
CPR during surgery external approach is coded 5A1D70Z in ICD-10-PCS. Cardiac arrest is a condition, not the procedure. Option A improperly uses diagnosis code structure. CMS PCS Table
A pregnant patient is admitted for delivery complicated by severe preeclampsia. Which ICD-10-CM code combination is correct?
O14.10 Mild to moderate preeclampsia, unspecified trimester; O80 Single spontaneous delivery
O14.12 Severe preeclampsia, second trimester; O82 Single delivery by cesarean
O14.13 Severe preeclampsia, first trimester; O80 Single spontaneous delivery
O14.14 Severe preeclampsia, third trimester; O80 Single spontaneous delivery
Severe preeclampsia in the third trimester is O14.14; uncomplicated single spontaneous delivery is O80. Trimester specificity is required for O14 codes. ICD10Data Reference
A patient experiences radiation-induced dermatitis during external beam radiation therapy. Which ICD-10-CM code is correct?
T66.XXXA Radiation sickness, unspecified, initial encounter
C79.51 Secondary malignant neoplasm of skin
L58.8 Radiodermatitis, unspecified
Z51.0 Encounter for antineoplastic radiation therapy
Radiodermatitis is coded L58.8; the encounter for radiation therapy (Z51.0) may be a secondary code but does not capture the dermatitis. T66 codes cover acute radiation sickness, which is systemic. ICD10Data Reference
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Study Outcomes

  1. Apply Realistic ICD-10 Coding Scenarios -

    Practice coding a variety of real-world medical cases using icd-10 coding scenarios with answers to improve accuracy and speed.

  2. Analyze and Assign Accurate ICD-10-CM Diagnosis Codes -

    Interpret patient details and clinical documentation to select appropriate ICD-10-CM codes, reinforcing your understanding of coding guidelines.

  3. Verify Coding Solutions with Instant Answers -

    Use the instant feedback feature to check your answers against correct codes and identify areas where you can refine your coding skills.

  4. Differentiate Diagnosis vs. Procedure Codes in ICD-10-CM -

    Understand the key differences between diagnosis codes and procedure codes, including whether ICD-10-CM provides procedure codes for services provided.

  5. Assess True-or-False ICD-10-CM Guideline Statements -

    Evaluate common true-or-false questions - such as whether ICD-10-CM includes procedure codes - to solidify your guideline comprehension.

  6. Utilize Additional ICD-10-CM Practice Resources -

    Access icd-10-cm practice questions and answers pdf materials for further study and ongoing exam preparation.

Cheat Sheet

  1. ICD-10 Code Structure & Conventions -

    Every ICD-10 code starts with a letter, followed by two digits for the category, a decimal, then up to four alphanumeric characters for specificity, as defined by the CDC's official guidelines. For example, "M54.5" denotes low back pain (M = musculoskeletal, 54 = back pain category, .5 = low back). Remember the mnemonic "ABC.D" to recall letter, two digits, decimal, and detail characters.

  2. Using the 7th Character Correctly -

    The 7th character (e.g., A, D, S) indicates initial encounter, subsequent encounter, or sequela, per CMS Chapter 4 guidelines. For instance, "S52.521A" is a greenstick fracture of the right radius, initial encounter. Try the phrase "A New Situation, D Days Later, S Still Follows" to lock in those values.

  3. Sequencing & Diagnostic Priority -

    ICD-10-CM coding practice questions stress placing the principal diagnosis first, followed by coexisting conditions that affect treatment, consistent with AHIMA standards. In a pneumonia admission, J18.9 (pneumonia) leads, then E11.9 for comorbid diabetes. Always review Official Coding Guideline I.C.2 to sequence correctly in scenarios with multiple pathologies.

  4. Documentation & Clinical Indicators -

    Accurate coding hinges on clear documentation: signs vs. symptoms, confirmed vs. suspected conditions, as per AAPC best practices. If the record states "rule out MI," you'd code R94.31 (abnormal cardiac enzyme) instead of I21 (acute MI). Always cross-verify notes with lab values or imaging reports to choose the right code.

  5. Practice Strategies for Mastery -

    Regularly tackle icd-10 coding scenarios with answers and download icd-10-cm practice questions and answers PDF files from reliable sources (e.g., AHA). When you encounter "true or false: icd-10-cm provides procedure codes for services provided," recall that ICD-10-CM is strictly diagnostic; CPT/ICD-10-PCS cover procedures. Time yourself to simulate exam conditions and track your accuracy improvements.

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