Summary & Overview
CPT 86720: Leptospira Antibody Immunoassay
CPT code 86720 represents a serologic immunoassay performed on patient serum to detect antibodies to Leptospira. As a laboratory diagnostic code, it supports identification of leptospiral infection and informs clinical decision-making for suspected leptospirosis. Nationally, accurate billing and coding for this test affect laboratory reporting, surveillance, and appropriate lab reimbursement pathways.
Key payers in typical analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical purpose of the test, typical sites of service, and which payers commonly cover laboratory immunoassays. The publication provides benchmarks where available, summarizes relevant policy or coverage considerations, and places the code in clinical context for laboratories and billing teams.
This summary covers the meaning of the code, payer coverage scope, common modifiers and coding notes when present, and how the service fits into diagnostic workflows for suspected leptospirosis. Data not available in the input will be noted as such in specific sections.
Billing Code Overview
CPT code 86720 describes an immunoassay performed by a laboratory analyst to evaluate a patient’s serum for antibodies to Leptospira. The service is a serologic antibody test for Leptospira infection, used to detect host immune response indicating current or recent exposure.
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Service type: Serologic laboratory test (immunoassay)
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Typical site of service: Clinical laboratory or hospital laboratory setting
Clinical & Coding Specifications
Clinical Context
A 34-year-old patient presents to an outpatient infectious disease clinic after recent occupational exposure to floodwater and rodents while working in rice fields. The patient reports fever, myalgias, headache, and conjunctival injection beginning 7 days after exposure. The ordering clinician suspects leptospirosis and requests serologic testing to detect anti-Leptospira antibodies. A phlebotomy technician collects a serum specimen and sends it to the clinical laboratory. The laboratory analyst performs an immunoassay to evaluate the patient’s serum for antibodies to Leptospira using CPT 86720. Results are reported to the ordering clinician for correlation with clinical findings and, if needed, confirmatory testing (e.g., microscopic agglutination test) or public health notification.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the professional interpretation component if split billing applies and the lab separates technical and professional components. |
TC | Technical component | Use when billing only the technical component (laboratory processing, reagents, instrumentation) and the professional component is billed separately. |