CPT 0879T: Chest CT Preparation and Transmission for ILD Classification

Headline: New CPT code 0879T flags specialized workflow for chest CT imaging sent for interstitial lung disease classification

Lead: CPT code 0879T captures the clinical and technical workflow in which a provider prepares and transmits chest computed tomography imaging to a specialized program that performs separate classification of interstitial lung disease. The code recognizes a distinct, billable step in the imaging-to-analytics pathway as imaging platforms and AI-driven classifiers are more frequently used in ILD evaluation.

CPT code 0879T represents a procedural descriptor for image preparation and transmission rather than image acquisition or interpretation alone. Nationally, the code matters because it delineates a discrete service that may be billed when chest CT data is routed to third-party or specialized analytic programs for ILD classification, affecting billing workflows across radiology practices and imaging centers.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will learn how the code is defined, the clinical context for use in interstitial lung disease evaluation, and the service settings where the code applies. The publication also provides benchmarks and policy context relevant to reimbursement coding, common modifiers encountered, and implications for documentation and claims processing.

This summary is intended for national audiences seeking concise guidance on the clinical role and billing context of CPT code 0879T.

Billing Code Overview

CPT code 0879T describes the preparation and transmission of chest computed tomography imaging for separate analysis by a specialized program to classify interstitial lung disease. This service involves deriving imaging data from a chest CT study and transmitting it to an external or specialized analytic platform for classification and interpretation support.

Service type: Image preparation and transmission for specialized analytic classification
Typical site of service: Outpatient radiology departments or imaging centers where chest CT studies are performed and processed for secondary analytic review

Data not available in the input.

Clinical Context

A 68-year-old patient with progressive exertional dyspnea, dry cough, and crackles on lung auscultation is referred by a pulmonologist for chest computed tomography (CT) to evaluate suspected interstitial lung disease (ILD). The facility performs a non-contrast high-resolution chest CT per protocol. The provider prepares the axial DICOM images and transmits the de-identified imaging dataset to a specialized quantitative analysis program that classifies ILD patterns (for example, usual interstitial pneumonia, nonspecific interstitial pneumonia, or other fibrotic patterns). The workflow includes image acquisition at the imaging center, local image quality review, export of a complete CT series, transmission to the third-party analytic service, and receipt of a structured analytic report that the ordering provider incorporates into clinical decision-making and multidisciplinary discussion.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when work required to prepare/transmit the imaging is substantially greater than typical, documented by provider.
`52`	Reduced services	Use when imaging data transmitted are incomplete or limited compared with standard protocol.

Taxonomy Code	Specialty	Notes
207RC0000X	Radiology - Diagnostic Radiology	Radiologists perform CT acquisition oversight and image preparation.
363L00000X	Pulmonary Disease	Pulmonologists order CT for ILD evaluation and receive analytic reports for management.
2084P0800X	Diagnostic Radiology - Thoracic Imaging	Thoracic imaging specialists manage high-resolution protocols and quality for ILD analysis.
261QR0400X	Clinical Laboratory - Molecular	Specialty labs/companies may perform the proprietary image analysis and classification (vendor role).

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`J84.10`	Pulmonary fibrosis, unspecified	Frequently used when ILD with fibrotic features is suspected and quantitative CT classification will guide diagnosis.
`J84.112`	Idiopathic pulmonary fibrosis	A primary diagnosis where CT pattern classification is essential for confirming usual interstitial pneumonia pattern.
`J84.9`	Interstitial pulmonary disease, unspecified	General code used when ILD is suspected prior to more specific diagnosis; CT analysis aids classification.
`R06.02`	Shortness of breath, orthopnea	Symptom code often accompanying ILD evaluation prompting chest CT and analytic classification.
`R05`	Cough	Common presenting symptom leading to CT imaging and specialized analysis for ILD.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`71250`	CT chest without contrast material	Common acquisition code for non-contrast high-resolution CT that provides the images prepared and transmitted under `0879T`.
`71260`	CT chest with contrast material(s)	Use when contrast-enhanced chest CT is performed prior to or instead of non-contrast acquisition; may be part of broader evaluation.
`71270`	CT chest with and without contrast material	Use when both non-contrast and contrast series are acquired; non-contrast series typically used for ILD quantitative analysis.
`76376`	3D rendering with interpretation and reporting of CT, MRI, ultrasound, or other tomographic modality; requiring image post-processing on an independent workstation	Use when additional advanced post-processing is performed locally before transmission to the specialized program.
`99090`	Analysis of medical records/information, e.g., complex input that may include physician time for record review using an electronic health record; each reportable 30 minutes	Use when substantial provider time is spent integrating the external analytic classification into the patient’s medical record and documenting management implications.

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Summary & Overview