80157 Assay carbamazepine free
Also known as: carbamazepine free level, free Tegretol level
Laboratory quantitative drug assay for carbamazepine free (unbound) serum fraction for therapeutic drug monitoring in seizure management.
In Plain Language
free carbamazepine blood test; active seizure medication level
Clinical Context
Measures pharmacologically active unbound carbamazepine; particularly useful in patients with altered protein binding or renal/hepatic disease.
RVU Information
CPT 80157 does not have a physician work RVU assigned by CMS. Reimbursement for this code is determined by payer-specific fee schedules.
Billing & Documentation
Lab and pathology codes require an order from the treating provider with clinical indication. For molecular pathology and genetic testing, document the specific analytes tested and clinical rationale.
How This Code Compares
This code has a work RVU of 0.00, meaning it does not have a physician work component assigned by CMS. In the Pathology & Lab category, 94% of codes share this characteristic.
Specialties
Frequently Asked Questions
What is CPT code 80157?
CPT 80157 (Assay carbamazepine free) is a Pathology & Lab code. Laboratory quantitative drug assay for carbamazepine free (unbound) serum fraction for therapeutic drug monitoring in seizure management.
Who uses CPT code 80157?
CPT 80157 is used by Pathology, Neurology, Clinical Pharmacology. Measures pharmacologically active unbound carbamazepine; particularly useful in patients with altered protein binding or renal/hepatic disease.
When is CPT 80157 used?
Measures pharmacologically active unbound carbamazepine; particularly useful in patients with altered protein binding or renal/hepatic disease.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.