CPT code 84255 represents a quantitative laboratory assay for measuring selenium, a trace element relevant to nutritional status and toxicology. This test is commonly ordered to evaluate selenium deficiency, monitor supplementation, or assess potential selenium toxicity. Nationally, accurate measurement of selenium supports clinical decision-making in endocrinology, nutrition, and occupational medicine and informs population-level surveillance of trace element status.

Key payers referenced in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find information on clinical context for ordering the test, typical sites of service where the assay is run, and payer coverage considerations. The publication summarizes common billing and coding considerations, available benchmarks where provided, and any notable policy updates that affect laboratory reimbursement and claim processing.

The report is intended for laboratory managers, clinical coders, and policy analysts seeking a concise reference to CPT code 84255, its clinical role, and the payer landscape affecting laboratory services for selenium testing. Data not available in the input is noted where applicable.