84480 Assay triiodothyronine (t3)
Also known as: T3, triiodothyronine, active thyroid hormone
Quantitative assay of serum triiodothyronine (T3) concentration, measuring the more active thyroid hormone form.
In Plain Language
thyroid hormone test
Clinical Context
Evaluates thyroid function; more biologically active than T4; measured less often than T4 or TSH.
RVU Information
CPT 84480 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 84480?
CPT 84480 (Assay triiodothyronine (t3)) is a Pathology & Lab code. Quantitative assay of serum triiodothyronine (T3) concentration, measuring the more active thyroid hormone form.
Who uses CPT code 84480?
CPT 84480 is used by Clinical Chemistry, Endocrinology, Pathology. Evaluates thyroid function; more biologically active than T4; measured less often than T4 or TSH.
When is CPT 84480 used?
Evaluates thyroid function; more biologically active than T4; measured less often than T4 or TSH.
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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.