CPT code 82728 represents a quantitative laboratory assay for serum ferritin, the primary intracellular iron-storage protein that reflects total body iron stores. Nationally, ferritin testing is a common diagnostic tool used to identify iron deficiency, anemia of chronic disease, and iron overload conditions such as hemochromatosis; it informs treatment decisions across primary care, hematology, and hospital medicine.

Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find clinical context about when ferritin measurement is indicated, typical sites of service where the test is performed, and the role of the assay in diagnostic pathways. The publication also summarizes typical billing considerations and common modifiers used with laboratory services where available.

This resource provides operational benchmarks and policy-relevant details useful to laboratory managers, billing teams, and clinicians who order or process ferritin testing. It highlights the clinical importance of the assay for iron-status evaluation and outlines what to expect in payer coverage patterns and claims processing at a national level. Data not available in the input are noted where applicable.