CPT 84439 — Assay of free thyroxine (2026 RVU Values)
CPT code 84439 (Assay of free thyroxine) is published in the 2026 CMS Physician Fee Schedule. Use this page as a reference for billing, productivity tracking, and compensation modeling.
CPT code 84439 (Assay of free thyroxine) is published in the 2026 CMS Physician Fee Schedule. Use this page as a reference for billing, productivity tracking, and compensation modeling.