Medical Coding

Category - Laboratory and Pathology

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A patient is on two medications needing monitoring. She needs to have a free and total phenytoin drug assay performed. She also needs to have a Topiramate drug assay performed. What are the correct CPT codes for these tests?

80184, 80185, 80201
80183, 80184, 80185
80185, 80186, 80201
80185, 80186, 80200

Explanation

Answer: C - 80185 and 80186 are the correct codes for total and free Phenytoin, and code 80201 is the correct code for Topiramate therapeutic drug assay tests.
Code 80184 is incorrect because this code is used for the drug Phenobarbital. Code 80183 is incorrect because this code is for the drug Oxcarbazepine and code 80200 is incorrect because this code is for the drug Tobramycin.

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