Medical Billing and Coding Mock
Exam Questions and Answers (Latest
Update 2026)
A 22-year-old female patient was seen in the ED with complaints of
diarrhea and lower abdominal pain. After examination, the patient
was diagnosed with viral gastroenteritis. What diagnosis code(s)
would be reported for this encounter? -
correct answer ✅A08.4
The patient had a blood test for HIV that has come back as
inconclusive. What ICD-10-CM code is assigned? -
correct answer ✅R75
Mrs. Chowdhury is seen today for management of her acquired
polycythemia. What ICD-10-CM code is reported? -
correct answer ✅D75.1
A 25-year-old woman is experiencing dizziness with nausea and
vomiting. The provider documents auditory vertigo of both ears.
What ICD-10-CM diagnosis code(s) would be reported? -
correct answer ✅H81.313
A 6-year-old male is admitted to observation with acute
exacerbation of childhood asthma. His mother indicated he had
been wheezing for two days and she administered nebulizer
, Medical Billing and Coding Mock
Exam Questions and Answers (Latest
Update 2026)
treatments that did not help. Additional treatments were given
while in observation overnight, and his breathing was stabilized.
What ICD-10-CM code is reported? -
correct answer ✅J45.901
A 29-year-old female patient presents with a keloid scar on her left
upper arm. What ICD-10-CM code is reported? -
correct answer ✅L91.0
A 66-year-old patient presents today for a screening colonoscopy.
He has a family history of colon cancer. The physician was able to
pass the scope to the cecum. What ICD-10-CM code is reported? -
correct answer ✅Z80.0
A 69-year-old patient presented to the OR for a malunion of a
fractured left clavicle, 3 months ago. She was treated with
additional surgery and discharged. Which injury diagnosis code is
assigned? -
correct answer ✅S42.002P
A 6-month-old female is in the office today to see her pediatrician
for a diaper rash. The physician prescribes an ointment to treat it.
Exam Questions and Answers (Latest
Update 2026)
A 22-year-old female patient was seen in the ED with complaints of
diarrhea and lower abdominal pain. After examination, the patient
was diagnosed with viral gastroenteritis. What diagnosis code(s)
would be reported for this encounter? -
correct answer ✅A08.4
The patient had a blood test for HIV that has come back as
inconclusive. What ICD-10-CM code is assigned? -
correct answer ✅R75
Mrs. Chowdhury is seen today for management of her acquired
polycythemia. What ICD-10-CM code is reported? -
correct answer ✅D75.1
A 25-year-old woman is experiencing dizziness with nausea and
vomiting. The provider documents auditory vertigo of both ears.
What ICD-10-CM diagnosis code(s) would be reported? -
correct answer ✅H81.313
A 6-year-old male is admitted to observation with acute
exacerbation of childhood asthma. His mother indicated he had
been wheezing for two days and she administered nebulizer
, Medical Billing and Coding Mock
Exam Questions and Answers (Latest
Update 2026)
treatments that did not help. Additional treatments were given
while in observation overnight, and his breathing was stabilized.
What ICD-10-CM code is reported? -
correct answer ✅J45.901
A 29-year-old female patient presents with a keloid scar on her left
upper arm. What ICD-10-CM code is reported? -
correct answer ✅L91.0
A 66-year-old patient presents today for a screening colonoscopy.
He has a family history of colon cancer. The physician was able to
pass the scope to the cecum. What ICD-10-CM code is reported? -
correct answer ✅Z80.0
A 69-year-old patient presented to the OR for a malunion of a
fractured left clavicle, 3 months ago. She was treated with
additional surgery and discharged. Which injury diagnosis code is
assigned? -
correct answer ✅S42.002P
A 6-month-old female is in the office today to see her pediatrician
for a diaper rash. The physician prescribes an ointment to treat it.
