84393 Tau phosphorylated each
Also known as: phosphorylated tau, p-tau, Alzheimer's biomarker
Quantitative assay of phosphorylated tau (p-tau), measuring this abnormal protein biomarker for neurodegeneration.
In Plain Language
dementia risk test; brain protein test
Clinical Context
Emerging biomarker for Alzheimer's disease and neurodegeneration; abnormal phosphorylation associated with cognitive decline.
RVU Information
CPT 84393 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 84393?
CPT 84393 (Tau phosphorylated each) is a Pathology & Lab code. Quantitative assay of phosphorylated tau (p-tau), measuring this abnormal protein biomarker for neurodegeneration.
Who uses CPT code 84393?
CPT 84393 is used by Neurology, Clinical Chemistry, Pathology. Emerging biomarker for Alzheimer's disease and neurodegeneration; abnormal phosphorylation associated with cognitive decline.
When is CPT 84393 used?
Emerging biomarker for Alzheimer's disease and neurodegeneration; abnormal phosphorylation associated with cognitive decline.
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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.