CPT 0808T: Quantitative Pulmonary Ventilation Analysis

CPT code 0808T represents an image-based, software-assisted pulmonary ventilation analysis that fuses cinefluorograph and CT images to quantify regional lung ventilation. The code covers the full service workflow, including data preparation, transmission, automated quantification, clinician review, interpretation, and reporting. Nationally, the code is relevant as imaging and quantitative analysis tools expand in pulmonary care, affecting diagnostic workflows for conditions such as obstructive lung disease and pre-procedural lung assessment.

Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for using advanced ventilation imaging, expected sites of service, common modifiers and billing considerations, and where available, benchmarking and coverage trends across major national payers. The publication also outlines the operational components captured by the code (data preparation, image fusion, quantification, interpretation, and reporting) to support administrative and clinical stakeholders in understanding service scope and coding alignment.

Data not available in the input for associated taxonomies, specific ICD-10 mappings, and related codes is noted where relevant.

Billing Code Overview

CPT code 0808T describes a software-driven analysis of pulmonary ventilation that combines separately captured cinefluorograph images with CT images acquired for the analysis. The service includes data preparation and transmission, quantification of pulmonary tissue ventilation, clinician review and interpretation, and a final report.

Service type: Image-based quantitative pulmonary ventilation analysis using combined cinefluorography and CT data
Typical site of service: Hospital outpatient imaging centers or freestanding imaging facilities where fluoroscopy and CT are available

Clinical Context

A 68-year-old patient with a history of chronic obstructive pulmonary disease (COPD) and suspected regional ventilation impairment is referred for advanced functional lung assessment prior to consideration of bronchoscopic valve placement. The patient presents with progressive dyspnea on exertion and noninvasive testing and pulmonary function tests that suggest heterogeneous emphysema. The clinical workflow includes: outpatient scheduling, informed consent for combined imaging analysis, acquisition of low-dose chest CT targeted for ventilation mapping and separately captured cinefluorography images during tidal breathing or controlled respiration, secure transmission of images to vendor software, automated data preparation and co-registration of CT and cinefluorography datasets, quantitative regional pulmonary ventilation output, radiologist or pulmonologist review and interpretation of the software-generated ventilation maps, and generation of a structured report integrated into the electronic medical record for treatment planning (for example, targeted lung volume reduction or bronchoscopic interventions). Typical site of service is an outpatient imaging center or hospital radiology department with fluoroscopy and CT capabilities. The service type is advanced imaging analysis and interpretation combining CT and cinefluorography for quantitative lung ventilation assessment.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when reporting only the physician interpretation/report separate from facility technical work.

Taxonomy Code	Specialty	Notes
2085P0800X	Pulmonary Disease	Specialists who evaluate and interpret ventilation imaging for emphysema and pre-procedural planning.
207RH0000X	Radiology - Diagnostic	Radiologists who perform image interpretation, co-registration review, and reporting.
363LP0200X	Nuclear Medicine	Physicians experienced in functional imaging interpretation; relevant when functional assessment is integrated with other modalities.
2080A0400X	Thoracic Surgery	Surgeons who review quantitative ventilation maps for surgical or bronchoscopic intervention planning.
207L00000X	Diagnostic Radiology - Interventional?	Interventional pulmonologists or radiologists involved in image-guided bronchoscopic or percutaneous procedures.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`J43.9`	Emphysema, unspecified	Common indication when regional ventilation mapping is required for lung volume reduction planning.
`J44.9`	Chronic obstructive pulmonary disease, unspecified	COPD patients often undergo ventilation assessment to identify heterogeneous disease.
`R06.02`	Shortness of breath, orthopnea? (Note: `R06.02` is orthopnea specifically)	Symptom prompting functional imaging to evaluate ventilation contribution to dyspnea.
`R06.00`	Dyspnea, unspecified	Clinical symptom leading to assessment of regional lung ventilation.
`Z98.890`	Other specified postprocedural states	Used when evaluating patients after prior lung interventions where ventilation mapping informs further care.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`71250`	CT, thorax, without contrast material	Often performed to provide the anatomic CT dataset used for co-registration with cinefluorography for ventilation analysis.
`71260`	CT, thorax, with contrast material(s)	Performed when contrast-enhanced anatomic detail is required in conjunction with functional analysis (less common for ventilation mapping).
`76000`	Fluoroscopy, up to one hour physician time, imaging supervision and interpretation	Represents cinefluorography acquisition used to capture dynamic ventilation images that are combined with CT for analysis.
`76377`	3D rendering with interpretation and reporting (eg, CT, MR, PET)	May be billed when advanced post-processing and 3D quantitative visualization are performed as part of the ventilation analysis.
`71270`	CT, thorax; with and without contrast material	Used when a combined noncontrast and contrast CT acquisition is obtained as part of the imaging workup.

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Summary & Overview