CPT 0175T: Computer-Aided Detection for Chest Radiographs

CPT code 0175T covers computer-aided detection (CAD) performed by specially designed software to identify potential abnormalities on chest radiographs. The code applies when a provider uses software to assist in detecting findings on chest X‑rays; the same provider may not perform both the CAD and the initial radiograph interpretation. Nationally, CAD for chest radiography is relevant as imaging volumes and AI-assisted tools expand, affecting clinical workflows and billing practices.

Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical function of the code, the typical sites where the service is delivered, and the significance of distinguishing CAD from primary radiology interpretation. The publication summarizes available benchmarks and payer coverage patterns where provided, highlights clinical context for use of CAD on chest radiographs, and outlines common billing considerations such as allowable service lines and applicable modifiers when present.

This national summary is intended for health policy professionals, coding staff, radiology administrators, and payers seeking a clear, practical description of the code, its clinical role, and the payer landscape. Data not available in the input are noted where applicable.

Billing Code Overview

CPT code 0175T describes the use of specially designed computer software by a qualified provider to identify potential abnormalities on chest radiographs. The service represents a computer-aided detection (CAD) application that analyzes chest X‑ray images to flag findings that may warrant further clinical review.

Service type: Computer-aided detection (CAD) for chest radiography
Typical site of service: Outpatient radiology or imaging centers and hospital radiology departments where chest radiographs are performed and interpreted

Clinical Context

A 62-year-old male with a 40-pack-year smoking history presents to the outpatient radiology clinic after a primary care physician ordered a routine chest radiograph for evaluation of persistent cough and mild dyspnea. The facility performs a standard posterior-anterior and lateral chest X-ray. A separate radiologist performs the initial interpretation. A second provider uses specialized computer-aided detection (CAD) software to analyze the chest radiograph images for potential pulmonary nodules or other radiographic abnormalities. The CAD review is documented separately from the interpreting radiologist’s report and may be billed when the CAD analysis is performed by a different provider than the initial image interpreter. The workflow includes image acquisition by radiologic technologist, primary reading by the interpreting radiologist, and secondary CAD analysis with a discrete report, with results used to guide follow-up imaging, pulmonology referral, or surgical consultation as clinically indicated.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	When billing only the professional interpretation component and the facility bills the technical component separately.
`TC`

Taxonomy Code	Specialty	Notes
207R00000X	Radiology	Radiologists commonly interpret chest X-rays and order or review CAD analyses.
2084P0800X	Diagnostic Radiology	Diagnostic radiologists perform image interpretation and may oversee CAD use.
363LP0800X	Physician Assistant	PAs in radiology departments may assist with workflow and documentation.
208000000X	General Practice/Family Medicine	Ordering clinicians who request chest radiographs and CAD review for primary care patients.
207L00000X	Pulmonary Disease	Pulmonologists who act on CAD findings and manage follow-up care.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`R05`	Cough	Common symptom prompting chest radiograph and CAD analysis to evaluate for infectious or structural causes.
`R06.02`	Shortness of breath	Indication for chest imaging; CAD may assist in detecting cardiopulmonary abnormalities.
`R91.8`	Other nonspecific abnormal findings of lung field	CAD can help identify and highlight nonspecific opacities or nodular findings for further evaluation.
`R09.3`	Abnormal sputum	When sputum abnormalities prompt radiographic imaging and CAD review to assess for infiltrates or masses.
`Z12.0`	Encounter for screening for malignant neoplasm of bronchus and lung	CAD is often applied in screening programs to detect potential pulmonary nodules.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`71045`	Radiologic examination, chest; single view, frontal	Commonly performed prior to or instead of multi-view imaging; CAD may be applied if single-view image is used for screening.
`71046`	Radiologic examination, chest; 2 views, frontal and lateral	Typical chest radiograph series whose images are evaluated by CAD software for abnormalities.
`71047`	Radiologic examination, chest; 3 views	Additional views that may be acquired for suspected pathology; CAD output can supplement interpretation.
`76376`	3-D rendering with interpretation and reporting of CT, MR, ultrasound, or other tomographic modality; not otherwise specified	While not specific to chest radiograph CAD, advanced image processing codes may be used for complex image analysis workflows in cross-sectional imaging.
`0175T`	Computer-aided detection (CAD) analysis of chest radiographs	The CAD service itself; used when CAD is performed by a provider different from the initial image interpreter and documented separately.

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Summary & Overview