CPT code 84410 identifies a laboratory assay that measures bioavailable testosterone in serum, a clinically important marker for assessing androgen status in adults. This laboratory test matters nationally because it informs diagnosis and management of conditions such as hypogonadism, infertility, and disorders of sexual development, and it can affect follow-up endocrine evaluations and therapeutic decisions. Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will find a concise overview of the clinical purpose of CPT code 84410, typical sites of service, and the service classification as a laboratory diagnostic test. The publication summarizes payer coverage context and common billing modifiers encountered in practice. It also provides benchmarks and policy-relevant considerations for billing and coding of laboratory services, plus a clinical context that explains when bioavailable testosterone testing is generally ordered and interpreted. Data not available in the input is noted where applicable.