CPT 86615 Bordetella Antibody Immunoassay Reimbursement

CPT code 86615 identifies a laboratory immunoassay performed to detect antibodies to Bordetella bacteria. This serologic test aids clinical diagnosis and surveillance of Bordetella infections, including pertussis, and can influence treatment decisions and public health reporting. Nationally, accurate billing and coding of serologic assays is important for laboratory reimbursement, epidemiologic tracking, and consistency across payers.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines payer coverage patterns, coding and billing considerations, and how 86615 fits into clinical diagnostic workflows.

Readers will learn the clinical context for ordering a Bordetella antibody immunoassay, the typical laboratory and site-of-service settings where the test is performed, and what information to expect in payer policies and documentation requirements. The report also summarizes national benchmarks for utilization where available, highlights relevant policy updates affecting laboratory testing reimbursement, and explains documentation elements commonly required by payers. Data not available in the input is identified where relevant.

Billing Code Overview

CPT code 86615 describes an immunoassay for detection of antibodies to Bordetella species in a patient's blood. The procedure is a laboratory serologic test performed by a qualified laboratory analyst or technologist to evaluate immune response to infection with Bordetella, the bacteria responsible for illnesses such as pertussis (whooping cough).

Service Type: Laboratory diagnostic immunoassay

Typical Site of Service: Clinical laboratory or hospital laboratory

Clinical Context

A typical patient scenario involves an outpatient who presents to a primary care clinic or urgent care with cough, paroxysmal or prolonged whooping cough suspicion, or exposure to someone with pertussis. A clinician documents symptoms such as persistent cough >2 weeks, posttussive emesis, or apneic episodes in infants and orders laboratory testing. The clinical workflow: the clinician collects a blood specimen (serum) or directs phlebotomy; the specimen is sent to the laboratory with the order for serologic testing for Bordetella antibodies. A laboratory analyst performs an immunoassay (enzyme immunoassay or chemiluminescent immunoassay) to detect IgG/IgA antibodies to Bordetella pertussis antigens. Results are reviewed by the laboratory and reported to the ordering provider; positive serology supports recent or past infection and may guide public health reporting and treatment decisions. Typical sites of service include hospital outpatient laboratories, independent clinical laboratories, urgent care centers, and physician office-based draw sites where blood collection and send-out or in-house immunoassay testing occur.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when billing only the professional (interpretation) portion if the laboratory separates technical and professional components, though `TC` is more typical for labs.

Taxonomy Code	Specialty	Notes
207Q00000X	Infectious Disease	Clinicians who suspect pertussis and order testing.
207K00000X	Pathology	Pathologists overseeing laboratory testing and result interpretation.
208D00000X	Pediatrics	Pediatricians ordering serology for infants and children with cough/apnea.
207L00000X	Allergy & Immunology	Specialists evaluating atypical or recurrent cough and serologic immune response.
363A00000X	Clinical Laboratory	Clinical laboratory technologists and directors responsible for performing and supervising the immunoassay.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`A37.0`	Bordetella pertussis (whooping cough)	Primary diagnosis for which Bordetella antibody testing is ordered to support diagnosis.
`R05`	Cough	Common presenting symptom prompting evaluation with pertussis serology when cough is prolonged or severe.
`R06.0`	Dyspnea	May be present in severe pertussis cases; testing can assist in etiologic determination.
`R06.81`	Apnea	Particularly relevant in infants where pertussis can cause apneic episodes prompting serologic testing.
`Z20.828`	Contact with and (suspected) exposure to other viral communicable diseases	Used when patient had known exposure to pertussis and surveillance/testing is performed.
`J98.01`	Acute bronchospasm	May be a presenting feature prompting evaluation including pertussis testing when clinical picture is unclear.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`36415`	Collection of venous blood by venipuncture	Performed prior to `86615` to obtain the serum specimen for the Bordetella immunoassay.
`87070`	Culture, bacterial; any other source except urine, quantitative, single culture	May be performed alongside serology when a clinician also orders culture or PCR for Bordetella from nasopharyngeal specimens for acute diagnosis.
`87536`	Infectious agent antigen detection by enzyme immunoassay technique, multiple-step method; Bordetella pertussis	Alternative or complementary direct antigen detection test used in early infection; may be ordered in the same diagnostic workup.
`87480`	Infectious agent detection by nucleic acid (DNA or RNA); Bordetella pertussis, amplified probe technique	Molecular PCR testing often performed before or along with serology for acute pertussis diagnosis; complements antibody testing.
`99000`	Handling and/or conveyance of specimen for transfer to another laboratory	Used when specimens are sent to a reference laboratory for `86615` testing; documents specimen transport handling.

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Summary & Overview

CPT 86615: Bordetella Antibody Immunoassay