AAPC Certified Professional Coder (CPC) — Question 105
A physician prescribes carbamazepine to treat a patient with epileptic seizures. After six months, the physician performs a therapeutic drug test to monitor the total level of the drug in the patient.
What CPT® and ICD-10-CM coding is used for the six month-evaluation?
Answer options
- A. 80156, R56.9
- B. 80157, R56.9
- C. 80157, G40.909
- D. 80156, G40.909
Correct answer: D
Explanation
The correct answer is D, as the CPT® code 80156 corresponds to the drug screening for carbamazepine, and G40.909 is the appropriate ICD-10-CM code for unspecified epilepsy. Options A and B use the wrong ICD-10-CM code, while option C has the incorrect CPT® code.