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ALL MEDICAL CODES IN CATEGORY Therapeutic Drug Assays

2025 CPT code 80159

Clozapine therapeutic drug assay.

2025 CPT code 80230

Infliximab (Remicade) level.

2025 CPT code 80176

Lidocaine (therapeutic drug assay, quantitative examination)

2025 CPT code 80235

Lacosamide

2025 CPT code 80163

This test measures the amount of free (unbound) digoxin in the blood.

2025 CPT code 80193

Leflunomide (teriflunomide), quantitative.

2025 CPT code 80186

Laboratory test to measure the amount of free phenytoin, an anticonvulsant medication, in a patient's specimen.

2025 CPT code 80175

Assay of lamotrigine; quantitative

2025 CPT code 80220

Hydroxychloroquine

2025 CPT code 80178

Lithium

2025 CPT code 80181

Flecainide (therapeutic drug assay, quantitative examination)

2025 CPT code 80190

This code represents a quantitative analysis of procainamide in a specimen like serum to monitor therapeutic levels.

2025 CPT code 80171

Quantitative measurement of gabapentin in whole blood, serum, or plasma.

2025 CPT code 80156

This code represents a quantitative laboratory test to determine the total amount of carbamazepine in a patient's serum or plasma.

2025 CPT code 80162

Measures the total amount of digoxin in a blood sample.

2025 CPT code 80155

This CPT code represents a quantitative assay to measure the level of caffeine in a patient's blood, serum, plasma, or cerebrospinal fluid.

2025 CPT code 80151

Quantitative test to measure amiodarone levels in a patient specimen (e.g., serum).

2025 CPT code 80184

Quantitative analysis of phenobarbital levels in a specimen (blood, serum, plasma, or CSF).

2025 CPT code 80192

Quantitative analysis of procainamide and its metabolites (e.g., N-acetylprocainamide) in a specimen (serum, plasma, blood, or cerebrospinal fluid).

2025 CPT code 80170

Quantitative analysis of gentamicin levels in a patient specimen (serum, plasma, whole blood, or cerebrospinal fluid).

2025 CPT code 80195

Quantitative analysis of sirolimus levels in a biological specimen (blood, serum, plasma, or cerebrospinal fluid).

2025 CPT code 80280

Quantitative test to measure vedolizumab levels in a patient specimen (serum, plasma, whole blood, or CSF).

2025 CPT code 80203

Quantitative determination of zonisamide levels in a patient's serum or plasma.

2025 CPT code 80183

This CPT code represents a quantitative therapeutic drug assay to measure the level of oxcarbazepine in a patient's blood sample (serum, plasma, or whole blood).

2025 CPT code 80201

Quantitative analysis of topiramate levels in a patient specimen (e.g., serum, plasma).

2025 CPT code 80157

This code represents a laboratory test to quantitatively measure the amount of free carbamazepine in a patient's blood sample (serum or plasma).

2025 CPT code 80210

Rufinamide (Banzel), serum, quantitative

2025 CPT code 80204

Methotrexate assay, quantitative.

2025 CPT code 80299

Quantitation of therapeutic drug, not elsewhere specified.

2025 CPT code 80161

Quantitative test measuring carbamazepine-10,11-epoxide levels in patient specimens (serum, plasma, etc.) to monitor medication toxicity.

2025 CPT code 80194

Quantitative analysis of quinidine levels in a patient specimen (serum, plasma, whole blood, or cerebrospinal fluid).

2025 CPT code 80164

Measures the total amount of valproic acid (dipropylacetic acid) in a blood sample.

2025 CPT code 80167

Quantitative test to measure felbamate levels in a patient specimen (e.g., serum).

2025 CPT code 80150

Quantitative analysis of amikacin levels in a patient specimen (e.g., serum, plasma).

2025 CPT code 80189

Quantitative test measuring itraconazole levels in patient specimens (e.g., serum, plasma).

2025 CPT code 80197

Quantitative analysis of tacrolimus levels in a patient sample (blood, serum, plasma, or cerebrospinal fluid).

2025 CPT code 80200

Tobramycin (therapeutic drug assay)

2025 CPT code 80188

Primidone

2025 CPT code 80145

Adalimumab (Humira) therapeutic drug assay, quantitative.

2025 CPT code 80179

Salicylate

2025 CPT code 80158

Cyclosporine (therapeutic drug assay)

2025 CPT code 80168

Quantitative analysis of ethosuximide levels in a patient specimen (blood, serum, plasma, or CSF).

2025 CPT code 80177

Quantitative determination of levetiracetam in a patient specimen (e.g., blood, serum, plasma).

2025 CPT code 80180

This code reports a quantitative therapeutic drug assay to measure mycophenolic acid levels in a patient's blood, serum, plasma, or cerebrospinal fluid.

2025 CPT code 80202

Quantitative analysis of vancomycin levels in a patient specimen (serum, plasma, whole blood, or cerebrospinal fluid).

2025 CPT code 80285

Quantitative measurement of voriconazole levels in a patient specimen (serum, plasma, whole blood, or CSF).

2025 CPT code 80198

This CPT code represents the laboratory analysis to quantitatively measure the amount of theophylline in a patient specimen (e.g., serum, plasma).

2025 CPT code 80173

Quantitative analysis of haloperidol levels in a patient specimen (serum, plasma, whole blood, or cerebrospinal fluid).

2025 CPT code 80169

Quantitative measurement of everolimus levels in a patient's blood sample.

2025 CPT code 80165

Measures the concentration of free valproic acid in a blood sample.

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