G0435 Rapid HIV Antibody Screening | HCPCS Reimbursement

HCPCS Level II code G0435 designates a rapid antibody screening test for HIV-1 and/or HIV-2. This code captures point-of-care, rapid infectious agent antibody detection used for screening individuals for HIV infection. Rapid HIV screening is a critical public health tool because it enables timely identification of cases, immediate counseling or linkage to confirmatory testing, and quicker initiation of care pathways when needed.

Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of what G0435 represents clinically and operationally, coverage considerations across major national payers, and the typical sites where this service is delivered. The publication outlines common billing contexts, payer policy themes, and coding considerations relevant to ambulatory and point-of-care settings.

The report provides benchmarks and policy summaries to help billing managers and compliance staff understand reimbursement positioning for rapid HIV screening, highlights payer coverage patterns, and summarizes clinical context for appropriate use. Data not available in the input for specific modifiers, taxonomies, ICD-10 pairings, and related codes is noted where applicable.

Billing Code Overview

HCPCS Level II code G0435 describes infectious agent antibody detection by rapid antibody test for HIV-1 and/or HIV-2, performed for screening purposes. The service involves a rapid point-of-care antibody assay intended to detect antibodies to HIV-1 and/or HIV-2.

Service type: Rapid HIV antibody screening test

Typical site of service: Point-of-care settings such as outpatient clinics, community testing sites, urgent care centers, and other ambulatory care locations.

Data not available in the input.

Clinical Context

A 28-year-old sexually active adult presents to a primary care clinic for routine sexually transmitted infection screening after a new sexual partner. The patient reports no acute symptoms but requests HIV screening. The clinical workflow includes registration and insurance verification, informed consent for HIV testing per state regulations, point-of-care rapid antibody testing for HIV-1 and/or HIV-2 using a CLIA-waived rapid test, documentation of test lot number and result in the medical record, brief pre- and post-test counseling, and ordering confirmatory laboratory testing (e.g., HIV-1/HIV-2 antibody differentiation assay or HIV-1 RNA) for any reactive/positive rapid result. The specimen is collected and tested on-site with results available during the visit; nonreactive results are communicated to the patient, and reactive results trigger immediate linkage-to-care steps and reporting to public health authorities as required by law.

Coding Specifications

Modifier	Description	When to Use
`00`	Unspecified	Rarely used; avoid when a specific modifier applies
`11`	Office or Other Outpatient	Use when service performed in physician office setting as the primary service

Taxonomy Code	Specialty	Notes
`207Q00000X`	Family Medicine	Primary care clinicians commonly perform rapid HIV screening
`207R00000X`	Internal Medicine	Adult medicine clinicians perform routine HIV screening and counseling
`363L00000X`	Clinical Laboratory Technologist/Technician	Performs or oversees point-of-care testing and quality control
`228100000X`	Nurse Practitioner	NPs frequently perform testing and counseling in outpatient settings
`367H00000X`	Infectious Disease Specialist	Consults on confirmatory testing and linkage to HIV care

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`Z11.4`	Encounter for screening for human immunodeficiency virus [HIV]	Routine HIV screening indication for asymptomatic individuals
`Z20.6`	Contact with and (suspected) exposure to human immunodeficiency virus [HIV]	Use when patient reports known exposure and needs testing
`R75`	Inconclusive laboratory evidence of human immunodeficiency virus [HIV]	Use when initial rapid test is reactive and confirmatory testing is pending or inconclusive
`B20`	Human immunodeficiency virus [HIV] disease	Use when testing is part of care for a patient with established HIV infection (screening or monitoring context may apply)
`Z72.51`	High-risk heterosexual behavior	Behavioral risk factor supporting need for screening

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`81002`	Urinalysis, by dipstick or tablet reagent; non-automated, without microscopy	Often performed alongside STI screening panels in primary care visits
`86701`	Antibody; HIV-1, screening immunoassay	Laboratory-based HIV-1 antibody screening test that may be ordered as follow-up or alternative to rapid point-of-care testing
`87389`	Infectious agent detection by nucleic acid (DNA or RNA); HIV-1, amplified probe technique	Used as confirmatory testing or to detect acute HIV infection when rapid antibody test is reactive or when acute infection is suspected
`87490`	Infectious agent detection by nucleic acid (DNA or RNA); HIV-1, using amplified probe technique, quantitative	Used for viral load testing and to confirm diagnosis and guide initial management after a reactive rapid test
`99401`	Preventive medicine counseling and/or risk factor reduction intervention(s) provided to an individual (typically 15 minutes)	Used for pre-test or post-test counseling related to HIV prevention and risk-reduction education

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Summary & Overview

HCPCS G0435: Rapid HIV-1/HIV-2 Antibody Screening Test