CPT code 87390 denotes an immunoassay performed to detect HIV-1 antigens, a laboratory diagnostic used to identify acute or ongoing human immunodeficiency virus type 1 infection. This antigen assay is clinically important for early detection, public health surveillance, and informing treatment initiation. Nationally, antigen testing complements antibody assays and nucleic acid testing in diagnostic algorithms and screening programs.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical purpose and testing context for CPT code 87390, a summary of common billing modifiers and administrative considerations, and a presentation of available benchmarking and coverage elements where provided. The publication outlines typical sites of service and service type, and highlights intersections with diagnostic workflows and laboratory reporting.

Data not available in the input is noted where specific payer policies, reimbursement benchmarks, ICD-10 mappings, and provider taxonomies would otherwise be presented.