Summary & Overview
CPT 86756: Serum Immunoassay for Respiratory Syncytial Virus
CPT code 86756 covers an immunoassay performed on patient serum to evaluate for respiratory syncytial virus (RSV). This laboratory diagnostic code matters nationally because RSV is a common respiratory pathogen with seasonal impact on vulnerable populations, and accurate laboratory identification supports clinical management, infection control, and public health surveillance. Laboratory billing and coverage for RSV testing have implications for hospital workflows, outpatient diagnostic pathways, and payer reimbursement policies.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical purpose of the test, typical sites of service, and the payer landscape relevant to coverage and claims processing. The publication summarizes common billing modifiers encountered for lab services, outlines where CPT code 86756 fits within laboratory service lines, and highlights typical considerations for claims adjudication and documentation.
The report also provides operational benchmarks and policy context that affect lab testing volume and reimbursement trends, plus clinical context on when an RSV serum immunoassay may be used versus other diagnostic modalities. Data limitations where specific payer rates or utilization metrics are not provided are clearly noted as unavailable in the input.
Billing Code Overview
CPT code 86756 describes an immunoassay performed by a laboratory analyst to detect respiratory syncytial virus (RSV) in patient serum. The service is a laboratory infectious disease test that reports presence or antibodies/antigens associated with RSV depending on the specific immunoassay method used.
Service Type: Laboratory diagnostic test — immunoassay
Typical Site of Service: Clinical laboratory or hospital laboratory, often originating from outpatient clinics, emergency departments, or inpatient settings where serum specimens are collected and sent to a lab for analysis.
Clinical & Coding Specifications
Clinical Context
A 9-month-old infant presents to the pediatric urgent care clinic in winter with a 3-day history of cough, nasal congestion, wheezing and increased work of breathing. The clinician performs a focused respiratory exam and documents hypoxemia by pulse oximetry and increased respiratory effort. A nasopharyngeal swab or serum sample is collected and sent to the hospital laboratory where a medical technologist performs an immunoassay to detect respiratory syncytial virus (RSV). Results are reported to the ordering clinician to guide cohorting, infection control, and supportive care decisions such as supplemental oxygen, nebulized bronchodilators, or admission for monitoring. Typical workflow: specimen collection at point of care, transport to the clinical laboratory, accessioning, performance of the immunoassay by the lab analyst, quality control review, result verification by a licensed provider or laboratory director, and electronic reporting into the patient’s record and to infection control as needed.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When reporting only the physician or laboratory director professional interpretation of the test separate from the technical component |
TC |