80185 Assay of phenytoin total
Also known as: phenytoin level, Dilantin level
Laboratory quantitative drug assay for phenytoin total serum level for therapeutic drug monitoring in seizure management.
In Plain Language
phenytoin blood test; seizure medication level
Clinical Context
Monitors total phenytoin concentration for seizure control; narrow therapeutic window and nonlinear kinetics require frequent monitoring.
RVU Information
CPT 80185 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 80185?
CPT 80185 (Assay of phenytoin total) is a Pathology & Lab code. Laboratory quantitative drug assay for phenytoin total serum level for therapeutic drug monitoring in seizure management.
Who uses CPT code 80185?
CPT 80185 is used by Pathology, Neurology, Clinical Pharmacology. Monitors total phenytoin concentration for seizure control; narrow therapeutic window and nonlinear kinetics require frequent monitoring.
When is CPT 80185 used?
Monitors total phenytoin concentration for seizure control; narrow therapeutic window and nonlinear kinetics require frequent monitoring.
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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.