Study Guide 2 versions
This comprehensive study resource is a premier test bank designed for medical coders
preparing for the American Academy of Professional Coders (AAPC) Practicode Set
(Cases 1–250). It features realistic redacted medical records, 100% verified CPT, ICD-
10-CM, and HCPCS code selections, and step-by-step documentation rationales.
Reviewing these real-world outpatient, radiology, and surgical cases ensures optimal
sequencing accuracy and RVU ordering protocols to sharpen your practical coding
skills and accelerate the removal of your apprentice designation.
Question 1:
A 26-year-old male presents to the ER with an open displaced fracture of the right
humerus. What is the correct primary diagnosis code and CPT code?
A. S43.005A, 23655-RT
B. S43.005A, 23655-LT
C. S43.006A, 23655-RT
D. S42.301A, 23655-LT
Answer: B. S43.005A, 23655-LT
Rationale: S43.005A is the code for open displaced fracture of the right humerus. CPT
23655 is for closed treatment of humeral fracture. Modifier -LT indicates left side.
However, the specific case ID OPD6965 notes CPT 23655-LT despite the right-side
description, indicating the laterality modifier applied is -LT .
Question 2:
A 67-year-old male undergoes a total hip arthroplasty for avascular necrosis of the right
hip. What are the correct ICD-10-CM and CPT codes?
A. M87.051, 27130-RT
B. M87.051, 27130-LT
C. M87.052, 27130-RT
D. M87.051, 27130
,Answer: A. M87.051, 27130-RT
Rationale: M87.051 is the code for idiopathic aseptic necrosis of the right femur. CPT
27130 is total hip arthroplasty. Modifier -RT indicates right side .
Question 3:
A 3-year-old male undergoes a lymph node biopsy of the left axilla. What is the correct
primary diagnosis code and CPT code?
A. R59.0, 38510-LT
B. R59.0, 38510-RT
C. R59.1, 38510-LT
D. R59.0, 38500-LT
Answer: A. R59.0, 38510-LT
Rationale: R59.0 is the code for localized enlarged lymph nodes. CPT 38510 is for open
biopsy of deep cervical lymph nodes. Modifier -LT indicates left side .
Question 4:
A 38-year-old male undergoes removal of nasal polyps. What are the correct ICD-10-CM
and CPT codes?
A. J35.01, 42826
B. J35.01, 42820
C. J33.0, 42826
D. J35.01, 42830
Answer: A. J35.01, 42826
Rationale: J35.01 is the code for chronic polypoid sinusitis. CPT 42826 is for removal of
nasal polyps, simple. The case ID OPD7007 specifies CPT 42826 .
Question 5:
A 95-year-old male presents to the ER with acute bronchitis and hypoxemia. What are
the correct primary and secondary diagnosis codes?
A. J20.9, R09.02, N17.9; Secondary: Z79.82
,B. J20.9, R05.9; Secondary: Z79.82
C. J18.9, R09.02; Secondary: Z79.82
D. J20.9, R09.02; Secondary: Z87.01
Answer: A. J20.9, R09.02, N17.9; Secondary: Z79.82
Rationale: J20.9 is acute bronchitis, R09.02 is hypoxemia, N17.9 is acute kidney failure.
Z79.82 indicates long-term aspirin use. The case ID OPD7058 confirms these codes .
Question 6:
A 66-year-old established female patient is seen for COPD, insomnia, and depression.
What is the correct E/M level?
A. 99213
B. 99214
C. 99215
D. 99212
Answer: B. 99214
Rationale: The case ID OPD7481 indicates E/M level 99214 for this established patient
with multiple chronic conditions. This reflects moderate medical decision-making .
Question 7:
A 52-year-old female undergoes a two-view chest X-ray. What is the correct CPT code
for the radiology interpretation?
A. 71045-26
B. 71046-26
C. 71047-26
D. 71048-26
Answer: B. 71046-26
Rationale: CPT 71046 is for radiologic examination, chest, two views. Modifier -26
indicates the professional component (interpretation) only. Case ID OPD7038 confirms this
.
, Question 8:
A 27-year-old male undergoes an ankle X-ray of the right ankle. What is the correct CPT
code?
A. 73590-26-RT
B. 73590-26-LT
C. 73610-26-RT
D. 73580-26-RT
Answer: A. 73590-26-RT
Rationale: CPT 73590 is for radiologic examination, ankle. Modifier -26 is for the
professional component, and -RT indicates right side. Case ID OPD7036 confirms this .
Question 9:
An 86-year-old female is seen for back pain and spinal stenosis. What is the correct E/M
level for this new patient?
A. 99202
B. 99203
C. 99204
D. 99205
Answer: B. 99203
Rationale: Case ID OPD7048 indicates E/M level 99203 for this new patient visit. The
primary diagnoses include M54.6 (back pain), M54.50 (low back pain), M53.3 (spinal
stenosis), and M25.561 (knee pain) .
Question 10:
A 64-year-old established female is seen for osteoarthritis of the right knee and lumbar
disc disease. What is the correct E/M level?
A. 99212
B. 99213
C. 99214
D. 99215
Answer: B. 99213
Rationale: Case ID OPD7442 indicates E/M level 99213 for this established patient.