Find policies, billing codes, payers, states, and providers
CPT 87340: Hepatitis B Surface Antigen (HBsAg) Immunoassay
CPT code 87340 denotes an immunoassay laboratory test for hepatitis B surface antigen (HBsAg). This diagnostic assay is widely used for detecting active hepatitis B infection, screening blood donors, and supporting clinical decision-making in infectious disease management. Nationally, HBsAg testing is essential to public health surveillance, prenatal screening programs, and clinical workflows that guide antiviral treatment and infection control.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication summarizes coverage and payment benchmarks where available, highlights clinical context for test utilization, and notes relevant policy considerations affecting lab reimbursement and coding practice.
Readers will learn the clinical purpose and typical settings for CPT code 87340, common payment and coverage patterns among major payers, and the types of benchmarks and policy updates that can affect laboratory billing for infectious disease serology. Data not available in the input is clearly identified where applicable.
Customize your policy alerts
Sign up for cpt 87340 policy alerts
Get alerted when payer policies referencing 87340 are released or updated.
Monitor payer policy activity
Billing Code Overview
CPT code 87340 reports an immunoassay test to detect hepatitis B surface antigen (HBsAg). The procedure detects the presence of HBsAg in serum or plasma using methods such as enzyme immunoassay (EIA) and other immunoassay techniques.
Service type: Laboratory diagnostic test — infectious disease serology
Typical site of service: Clinical laboratory or hospital laboratory, including outpatient and inpatient specimen collection sites.