Home
Career Stage
Medical Students Residents Attendings CPT Codes Resources Blog Support

80168 Assay of ethosuximide

Pathology & Lab

Also known as: ethosuximide level, Zarontin level

Laboratory quantitative drug assay for ethosuximide to assess serum level for therapeutic drug monitoring in absence seizure management.

In Plain Language

ethosuximide blood test; seizure medication level

Clinical Context

Monitors ethosuximide concentration for absence seizure control; particularly used in childhood absence epilepsy.

RVU Information

CPT 80168 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

PathologyNeurologyPediatrics

Frequently Asked Questions

What is CPT code 80168?

CPT 80168 (Assay of ethosuximide) is a Pathology & Lab code. Laboratory quantitative drug assay for ethosuximide to assess serum level for therapeutic drug monitoring in absence seizure management.

Who uses CPT code 80168?

CPT 80168 is used by Pathology, Neurology, Pediatrics. Monitors ethosuximide concentration for absence seizure control; particularly used in childhood absence epilepsy.

When is CPT 80168 used?

Monitors ethosuximide concentration for absence seizure control; particularly used in childhood absence epilepsy.

Track This Code in RVU Edge

Log procedures, calculate wRVUs, and benchmark against national data — all in one app.

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.