Summary & Overview
CPT 0877T: Chest CT Image Analysis for Interstitial Lung Disease Classification
CPT code 0877T covers the use of a specialized software program to analyze previously obtained chest CT images for classification of interstitial lung disease. This code captures a distinct clinical service: retrospective, software-driven image analysis that augments diagnostic characterization of diffuse parenchymal lung disease. Nationally, the code matters because advanced imaging analytics are increasingly used to stratify disease, guide management, and inform multidisciplinary care planning.
Key payers included in this overview are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical purpose of the code, typical settings where the service is provided, and the scope of services captured by the code. The publication also summarizes payer coverage considerations and common billing modifiers associated with similar services.
This piece provides clinical and billing context for health system managers, coding professionals, and policy stakeholders seeking to understand where this service fits within imaging workflows and payer frameworks. It highlights what the code represents, why the service is clinically relevant for interstitial lung disease care, and what to expect in terms of documentation and billing categorization. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 0877T describes the use of a specialized software program to analyze previously obtained chest computed tomography imaging to classify interstitial lung disease. This service involves retrospective image analysis rather than image acquisition or immediate interpretation at the time of scanning.
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Service type: Image analysis software–based classification of interstitial lung disease
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Typical site of service: Outpatient radiology or pulmonary imaging review setting; analysis is performed on existing CT images rather than during the initial imaging encounter.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 64-year-old patient with progressive exertional dyspnea and nonproductive cough is referred to a pulmonology clinic after an abnormal chest CT performed for unexplained hypoxia. Prior high-resolution chest CT images are available in the PACS. The pulmonologist orders a quantitative, software-based analysis using a specialized program to classify interstitial lung disease patterns (for example, usual interstitial pneumonia, nonspecific interstitial pneumonia, organizing pneumonia, or other fibrotic phenotypes). The workflow includes retrieval of prior chest CT DICOM series, transfer to the analytic software, automated segmentation and pattern recognition by the program, physician review of algorithm outputs and annotated images, and generation of a structured report documenting pattern classification and percentage extent of disease. The result informs multidisciplinary discussion, diagnostic confidence, and treatment planning, and is billed separately from the original CT acquisition and interpretation when supported by payer policy.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when the analysis and reporting required substantially greater work or complexity than typical due to extensive review or multiple prior studies. |
52 |