CPT 0528U: BioFire FilmArray Pneumonia Panel, Molecular Respiratory Test

CPT code 0528U designates the BioFire® FilmArray® Pneumonia (PN) Panel, a proprietary molecular diagnostic test that detects bacteria, viruses, and antimicrobial-resistance genes from lower respiratory tract specimens. As a PLA code, 0528U applies only to this specific assay by bioMérieux; it is used when amplified probe techniques, including reverse transcription for RNA targets, and semiquantitative bacterial reporting are performed. Nationally, rapid multiplex respiratory diagnostics like the PN Panel matter for antimicrobial stewardship, infection control, and timely clinical decision-making in hospitalized and critically ill patients.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical context, typical sites of service, common modifiers, and what to expect in payor coverage patterns. The publication summarizes benchmark considerations for laboratory service lines, notes PLA-specific coding implications, and highlights clinical scenarios where the PN Panel’s semiquantitative bacterial results and resistance-gene detection are most relevant. Data not available in the input is acknowledged for items such as associated taxonomies, ICD-10 diagnoses, related codes, and detailed payer policy specifics.

Billing Code Overview

CPT code 0528U is a Proprietary Laboratory Analyses (PLA) code that applies exclusively to the BioFire® FilmArray® Pneumonia (PN) Panel manufactured by bioMérieux. The test uses an amplified probe technique, including reverse transcription for RNA targets, to detect a panel of bacteria, viruses, and antimicrobial-resistance genes in lower respiratory tract specimens. Results report whether each pathogen is detected and include semiquantitative reporting for certain bacterial targets.

Service type: Molecular diagnostic respiratory pathogen panel with semiquantitative bacterial results
Typical site of service: Clinical laboratory processing lower respiratory tract specimens (e.g., sputum, bronchoalveolar lavage)

Clinical Context

A typical patient is an adult hospitalized with suspected lower respiratory tract infection or pneumonia who has worsening oxygenation, fever, leukocytosis, or radiographic consolidation. A respiratory sample (sputum, endotracheal aspirate, bronchoalveolar lavage) is collected and sent to the clinical microbiology laboratory for the BioFire® FilmArray® Pneumonia (PN) Panel. The laboratory performs the amplified probe assay, which includes reverse transcription for RNA virus targets and reports detected pathogens, resistance genes, and semiquantitative bacterial loads. Results are used by the inpatient clinical team (hospitalists, intensivists, infectious disease consultants) to refine antimicrobial therapy, guide infection control, and support clinical decision-making for ventilated or nonventilated patients. Typical workflow steps: specimen collection in the bedside setting, transport to the laboratory, testing on the FilmArray instrument by laboratory technologists, verification of results by supervising laboratorian, and electronic reporting to the ordering clinician and the electronic health record.

Coding Specifications

Modifier	Description	When to Use
`00`	Standard primary service code (no modifier)	Use when reporting the test without any modifier-specific circumstance.
`22`

Taxonomy Code	Specialty	Notes
207K00000X	Anatomic/Clinical Pathology	Laboratory directors and pathologists who oversee molecular diagnostic testing.
207L00000X	Clinical Molecular Genetics	Specialists who design and validate molecular assays, including respiratory panels.
208000000X	Hospitalist	Ordering clinicians managing inpatient care and interpreting results for therapy decisions.
207R00000X	Infectious Disease	Consultants who use panel results to guide antimicrobial selection and infection prevention.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`J18.9`	Pneumonia, unspecified organism	Common indication for ordering the PN Panel to identify causative pathogens and guide therapy.
`J15.9`	Bacterial pneumonia, unspecified	Bacterial-targeted detection on the PN Panel helps identify likely bacterial etiologies and semiquantitative loads.
`J12.89`	Other viral pneumonia	Viral targets on the PN Panel, including RNA viruses, assist in diagnosing viral pneumonias.
`J95.851`	Ventilator-associated pneumonia	Frequent clinical scenario where the PN Panel is used on lower respiratory samples to rapidly detect pathogens in ventilated patients.
`R05`	Cough	Symptom that may prompt respiratory sampling and molecular testing in the appropriate clinical context.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`87070`	Culture, bacterial; any other source except urine, blood or stool, and blood culture when performed separately	May be ordered alongside the PN Panel to obtain isolates for susceptibility testing and further characterization.
`87205`	Infectious agent antigen detection by immunoassay with direct optical observation; multiple-step method	Alternative rapid method for some respiratory pathogens; less comprehensive than the multiplex PN Panel.
`87631`	Infectious agent detection by nucleic acid (DNA or RNA); SARS-CoV-2, amplified probe technique	Molecular respiratory pathogen test commonly performed in parallel or separately for COVID-19 diagnosis; may be part of respiratory testing strategy.
`96372`	Therapeutic, prophylactic, or diagnostic injection (specify substance)	Not a lab code but may appear in the same encounter when patients receive antimicrobials adjusted based on PN Panel results.
`88360`	Microbiology procedures, interpretation and reporting (complex stains, etc.) — placeholder for other lab interpretive services	Represents additional interpretive or consultative services that may accompany complex laboratory diagnostics and result interpretation.

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Summary & Overview