2026 AHIMA CCS
Exam Prep
3 Full Sets Exams
(ICD-10-CM, PCS, CPT Coding Cases)
Questions & Answers with Rationales
What You’ll Get:
• 3 Full Practice Exams (150 Questions Each)
• Case-Based Coding Scenarios (Inpatient & Outpatient)
• Questions & Answers with Detailed Rationales
• Coverage of ICD-10-CM, ICD-10-PCS & CPT
• Printable & Instant Download PDF
, TABLE OF CONTENTS
AHIMA CCS Exam Set 1…………………………………………. 2
AHIMA CCS Exam Set 2…………………………….………………. 49
AHIMA CCS Exam Set 3………………………….…………………. 93
AHIMA CCS Exam Set 1
1. The physician visits his patient in the hospital and indicates that the patient has diabetes.
Insulin is prescribed for and administered to the patient. What is the best decision that the coding
professional can make in this situation?
A. Assign a code for type 1 diabetes mellitus because insulin was administered.
B. Assign a code for drug-induced diabetes mellitus.
C. Assign a code for type 2 diabetes mellitus with complications.
D. Assign a code for type 2 diabetes mellitus along with a code for the insulin use.
Correct Answer: D. Assign a code for type 2 diabetes mellitus along with a code for the
insulin use.
Expert Rationale: If the type of diabetes mellitus is not documented, the default is type 2
diabetes mellitus. Additionally, insulin use should be coded separately to fully capture treatment
(ICD-10-CM Guidelines I.C.4.a.2).
2. The patient is seen in the emergency department (ED) with acute lumbar pain. The ED
physician documents possible kidney stones and orders an x-ray. The radiologist documents
bilateral nephrolithiasis. The coding professional would assign a code for which of the following
conditions?
A. Acute lumbar pain
B. Bilateral nephrolithiasis
C. Possible kidney stones
D. Abnormal x-ray findings
,Correct Answer: B. Bilateral nephrolithiasis
Expert Rationale: A radiologist’s definitive diagnosis can be used for outpatient coding. Since
nephrolithiasis is confirmed, it takes precedence over symptoms or suspected conditions (ICD-
10-CM Outpatient Guidelines IV.K).
3. A female infant was born in the hospital at term and at a normal birth weight. It was a vaginal
delivery with a vertex presentation. In the hours after birth, jaundice was noted and eventually a
diagnosis of erythroblastosis fetalis due to an ABO incompatibility was made. How would this
admission be coded?
A. Z38.00, P55.0
B. Z38.00, P55.1
C. Z38.00, P55.8
D. Z38.00, P55.9
Correct Answer: B. Z38.00, P55.1
Expert Rationale: Code Z38.00 identifies the birth status, and P55.1 correctly identifies ABO
isoimmunization of the newborn, which caused the condition.
4. The patient is seen in his ophthalmologist's office and treated for bilateral open angle
glaucoma, moderate stage. How would this encounter be coded?
A. H40.10X2
B. H40.1111
C. H40.9
D. H40.1112
Correct Answer: A. H40.10X2
Expert Rationale: When both eyes have the same type and stage of glaucoma and no bilateral
code exists, assign one code with the appropriate stage character.
5. Inpatient admission: The patient is diagnosed with nutritional anemia and gastritis. What
codes would be reported for this encounter?
A. D53.9, K29.70
B. D53.9, K29.70, R00.2
C. D53.9, K29.70, R10.9
, Correct Answer: A. D53.9, K29.70
Expert Rationale: Symptoms such as palpitations and abdominal pain are integral to the
diagnosed conditions and are not coded separately (ICD-10-CM I.C.18.b).
6. A 77-year-old female with steroid-induced diabetes mellitus and multiple conditions is
discharged. What codes are reported?
A. E11.9, J84.9, K92.1
B. E09.9, J84.9, K92.1, R09.02, M06.9, N18.9, T38.0X5A
C. E11.65, J84.9, R09.02
Correct Answer: B. E09.9, J84.9, K92.1, R09.02, M06.9, N18.9, T38.0X5A
Expert Rationale: Drug-induced diabetes is coded using category E09, with an additional code
identifying the drug adverse effect. All relevant comorbidities are coded.
7. Initial presentation for excessive drowsiness due to sensitivity to Periactin taken as prescribed.
Which code is assigned?
A. T45.0X2A
B. T45.0X6A
C. T45.0X4A
D. T45.0X5A
Correct Answer: D. T45.0X5A
Expert Rationale: This represents an adverse effect since the medication was taken correctly.
Therefore, the adverse effect column is used.
8. A patient has left arm paralysis due to past poliomyelitis. What codes are assigned?
A. G83.24, B91
B. B91, G83.22
C. G81.90, A80.9
D. B91, G83.20
Correct Answer: A. G83.24, B91
Expert Rationale: Code the residual condition first (monoplegia), followed by the cause
(sequela of poliomyelitis). Left side defaults to nondominant.
Exam Prep
3 Full Sets Exams
(ICD-10-CM, PCS, CPT Coding Cases)
Questions & Answers with Rationales
What You’ll Get:
• 3 Full Practice Exams (150 Questions Each)
• Case-Based Coding Scenarios (Inpatient & Outpatient)
• Questions & Answers with Detailed Rationales
• Coverage of ICD-10-CM, ICD-10-PCS & CPT
• Printable & Instant Download PDF
, TABLE OF CONTENTS
AHIMA CCS Exam Set 1…………………………………………. 2
AHIMA CCS Exam Set 2…………………………….………………. 49
AHIMA CCS Exam Set 3………………………….…………………. 93
AHIMA CCS Exam Set 1
1. The physician visits his patient in the hospital and indicates that the patient has diabetes.
Insulin is prescribed for and administered to the patient. What is the best decision that the coding
professional can make in this situation?
A. Assign a code for type 1 diabetes mellitus because insulin was administered.
B. Assign a code for drug-induced diabetes mellitus.
C. Assign a code for type 2 diabetes mellitus with complications.
D. Assign a code for type 2 diabetes mellitus along with a code for the insulin use.
Correct Answer: D. Assign a code for type 2 diabetes mellitus along with a code for the
insulin use.
Expert Rationale: If the type of diabetes mellitus is not documented, the default is type 2
diabetes mellitus. Additionally, insulin use should be coded separately to fully capture treatment
(ICD-10-CM Guidelines I.C.4.a.2).
2. The patient is seen in the emergency department (ED) with acute lumbar pain. The ED
physician documents possible kidney stones and orders an x-ray. The radiologist documents
bilateral nephrolithiasis. The coding professional would assign a code for which of the following
conditions?
A. Acute lumbar pain
B. Bilateral nephrolithiasis
C. Possible kidney stones
D. Abnormal x-ray findings
,Correct Answer: B. Bilateral nephrolithiasis
Expert Rationale: A radiologist’s definitive diagnosis can be used for outpatient coding. Since
nephrolithiasis is confirmed, it takes precedence over symptoms or suspected conditions (ICD-
10-CM Outpatient Guidelines IV.K).
3. A female infant was born in the hospital at term and at a normal birth weight. It was a vaginal
delivery with a vertex presentation. In the hours after birth, jaundice was noted and eventually a
diagnosis of erythroblastosis fetalis due to an ABO incompatibility was made. How would this
admission be coded?
A. Z38.00, P55.0
B. Z38.00, P55.1
C. Z38.00, P55.8
D. Z38.00, P55.9
Correct Answer: B. Z38.00, P55.1
Expert Rationale: Code Z38.00 identifies the birth status, and P55.1 correctly identifies ABO
isoimmunization of the newborn, which caused the condition.
4. The patient is seen in his ophthalmologist's office and treated for bilateral open angle
glaucoma, moderate stage. How would this encounter be coded?
A. H40.10X2
B. H40.1111
C. H40.9
D. H40.1112
Correct Answer: A. H40.10X2
Expert Rationale: When both eyes have the same type and stage of glaucoma and no bilateral
code exists, assign one code with the appropriate stage character.
5. Inpatient admission: The patient is diagnosed with nutritional anemia and gastritis. What
codes would be reported for this encounter?
A. D53.9, K29.70
B. D53.9, K29.70, R00.2
C. D53.9, K29.70, R10.9
, Correct Answer: A. D53.9, K29.70
Expert Rationale: Symptoms such as palpitations and abdominal pain are integral to the
diagnosed conditions and are not coded separately (ICD-10-CM I.C.18.b).
6. A 77-year-old female with steroid-induced diabetes mellitus and multiple conditions is
discharged. What codes are reported?
A. E11.9, J84.9, K92.1
B. E09.9, J84.9, K92.1, R09.02, M06.9, N18.9, T38.0X5A
C. E11.65, J84.9, R09.02
Correct Answer: B. E09.9, J84.9, K92.1, R09.02, M06.9, N18.9, T38.0X5A
Expert Rationale: Drug-induced diabetes is coded using category E09, with an additional code
identifying the drug adverse effect. All relevant comorbidities are coded.
7. Initial presentation for excessive drowsiness due to sensitivity to Periactin taken as prescribed.
Which code is assigned?
A. T45.0X2A
B. T45.0X6A
C. T45.0X4A
D. T45.0X5A
Correct Answer: D. T45.0X5A
Expert Rationale: This represents an adverse effect since the medication was taken correctly.
Therefore, the adverse effect column is used.
8. A patient has left arm paralysis due to past poliomyelitis. What codes are assigned?
A. G83.24, B91
B. B91, G83.22
C. G81.90, A80.9
D. B91, G83.20
Correct Answer: A. G83.24, B91
Expert Rationale: Code the residual condition first (monoplegia), followed by the cause
(sequela of poliomyelitis). Left side defaults to nondominant.
