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

80178 Assay of lithium

Pathology & Lab

Also known as: lithium level, mood stabilizer level

Laboratory quantitative drug assay for lithium to assess serum level for therapeutic drug monitoring in bipolar disorder treatment.

In Plain Language

lithium blood test; mood stabilizer level

Clinical Context

Monitors serum lithium concentration; critical monitoring due to narrow therapeutic window and risk of toxicity affecting renal and thyroid function.

RVU Information

CPT 80178 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

PathologyPsychiatryClinical Pharmacology

Frequently Asked Questions

What is CPT code 80178?

CPT 80178 (Assay of lithium) is a Pathology & Lab code. Laboratory quantitative drug assay for lithium to assess serum level for therapeutic drug monitoring in bipolar disorder treatment.

Who uses CPT code 80178?

CPT 80178 is used by Pathology, Psychiatry, Clinical Pharmacology. Monitors serum lithium concentration; critical monitoring due to narrow therapeutic window and risk of toxicity affecting renal and thyroid function.

When is CPT 80178 used?

Monitors serum lithium concentration; critical monitoring due to narrow therapeutic window and risk of toxicity affecting renal and thyroid function.

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.