Summary & Overview
CPT 32408: Image-Guided Core Needle Biopsy of Lung or Mediastinum
CPT code 32408 identifies an image-guided core needle biopsy of the lung or mediastinum used to obtain tissue for diagnosis, frequently for suspected malignancy. This procedure is clinically important because it provides histologic diagnosis that guides oncology, thoracic surgery, and pulmonary care, and it affects downstream treatment planning and resource use across the health system. Key payers addressed 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, and common billing modifiers; national benchmarks for utilization and payment patterns where available; and discussion of coding and documentation considerations that influence coverage and claims processing. The summary highlights elements that impact authorization and claim adjudication, such as inclusion of imaging guidance in the code description, and notes where input data were not provided. Data not available in the input will be identified as such in the detailed sections.
Billing Code Overview
CPT code 32408 describes a procedure in which the provider removes a core tissue sample from the lung or mediastinum to establish a diagnosis, such as lung or mediastinal cancer. The description specifies that imaging guidance is included when performed, indicating the procedure may be performed with modalities such as fluoroscopy, CT, or ultrasound as part of the service.
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Service type: Image-guided percutaneous core needle biopsy of lung or mediastinum.
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Typical site of service: Hospital outpatient department, ambulatory surgery center, or interventional radiology suite; procedures may also occur in specialized outpatient clinics where imaging guidance is available.
Clinical & Coding Specifications
Clinical Context
A 64-year-old current smoker with a persistent 3-cm spiculated right upper lobe pulmonary nodule on chest CT presents to a thoracic surgery clinic after a positron emission tomography (PET) scan demonstrating moderate FDG uptake. Pulmonary function testing demonstrates acceptable operative risk. The clinician plans a percutaneous or image-guided transthoracic core needle biopsy of the lung to obtain sufficient tissue for histopathology and molecular testing to diagnose or rule out primary lung cancer versus metastasis. The workflow includes pre-procedure consent, review of anticoagulation, image review and localization, conscious sedation or monitored anesthesia as indicated, CT- or ultrasound-guided core needle tissue sampling, on-site cytology or pathology review when available, post-procedure observation with chest radiograph to exclude pneumothorax, and specimen submission for histology and ancillary studies.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the physician interpretation/professional portion of imaging guidance or pathology interpretation that is reportable separately. |
50 | Bilateral procedure |