Summary & Overview
CPT 86696: Immunoassay for HSV-2 Antibodies in Serum or CSF
CPT code 86696 covers a laboratory immunoassay that detects antibodies to herpes simplex virus type 2 (HSV-2) in serum or cerebrospinal fluid. This diagnostic test is clinically important for identifying prior HSV-2 exposure, aiding in the evaluation of genital or neurologic herpes infections, and guiding further clinical and public health decisions. Nationally, antibody testing for HSV-2 is a routine component of infectious disease diagnostics and public health surveillance.
Key payers included in this overview are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The analysis focuses on coverage patterns, common billing practices, and clinical context relevant to laboratory and hospital settings. Readers will find concise benchmarks for how this service is positioned across major payers, a summary of clinical indications and specimen types, and an explanation of the service line and typical sites of service where 86696 is billed. Where specific data elements were not supplied in the input, the document notes: "Data not available in the input." This publication is intended to provide a practical, national-level reference for coding, billing, and clinical teams handling HSV-2 antibody immunoassays.
Billing Code Overview
CPT code 86696 describes an immunoassay performed by a laboratory analyst to detect antibodies to herpes simplex virus type 2 (HSV-2) in a patient's serum or cerebrospinal fluid (CSF). This test identifies the presence of HSV-2–specific antibodies to help determine prior exposure or immune response to HSV-2.
Service Type: Laboratory diagnostic immunoassay
Typical Site of Service: Clinical laboratory or hospital laboratory (inpatient or outpatient), and specimens are submitted from ambulatory clinics, emergency departments, or inpatient wards for serum or CSF testing.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult presenting to an outpatient clinic or emergency department with genital vesicular lesions, dysuria, fever, or meningitis/aseptic encephalitis symptoms. A clinician collects blood (serum) or cerebrospinal fluid (CSF) and orders laboratory testing for herpes simplex virus type 2 (HSV-2) antibodies to differentiate primary versus recurrent infection or to support a diagnosis of HSV-2–associated central nervous system infection. The sample is sent to a clinical laboratory where a medical technologist or lab analyst performs an immunoassay (enzyme immunoassay or chemiluminescent immunoassay) to detect HSV-2–specific IgG and/or IgM antibodies. Results are reviewed by the laboratory and reported to the ordering provider; positive serology supports prior exposure or recent infection depending on antibody class and clinical context, while CSF antibody detection can support CNS involvement. Typical sites of service include hospital inpatient laboratories, outpatient hospital laboratories, independent clinical reference laboratories, and emergency department specimen processing labs.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the professional (interpretive) component of the test if the laboratory separates technical and professional components. |