CPT Code 71250: CT Chest Without Contrast

What is CT chest without contrast?

CPT code 71250 describes a computed tomography (CT) scan of the chest (thorax) without contrast material. This diagnostic imaging procedure captures detailed cross-sectional images of thoracic anatomy, including the lungs, mediastinum, pleura, chest wall, ribs, lymph nodes, and soft tissue structures. It is commonly used to evaluate conditions such as chest pain, persistent cough, lung abnormalities, interstitial lung disease, and suspected pulmonary embolism.

In certain cases, low-dose CT scans performed for lung cancer screening are also reported using CPT code 71250 when no contrast material is administered. The selection of this appropriate code should follow American College of Radiology (ACR) guidelines, and healthcare providers must ensure the indication supports medical necessity. This test helps optimize diagnostic evaluation while contributing to accurate billing, proper reimbursement, and streamlined revenue cycle performance.

Depending on how the CT scan is billed, it may represent either the professional component (e.g., radiologist interpretation), the technical component (e.g., imaging equipment), or both. Modifiers may be needed to reflect only the professional component or the full global service. Medicare and commercial reimbursement rates for code 71250 vary based on geographic location, contracts, and payer guidelines.

CPT code 71250 documentation requirements

To support accurate billing and avoid claim denials when reporting CPT code 71250, healthcare providers and radiologists must include key elements in the documentation. These elements help justify the diagnostic procedure and ensure compliance with reimbursement guidelines:

• Reason for the study, such as chest pain, shortness of breath, abnormal chest X-ray, or lung cancer screening
• Clinical history and suspected diagnosis (e.g., suspected lung abnormalities, pulmonary embolism, or lung disease)
• Clear indication that the CT scan was performed without contrast material, including details of the imaging protocol and technique used
• Findings and interpretation of all visualized thoracic structures, including the lungs, lymph nodes, ribs, soft tissue, thyroid gland, and other applicable anatomy
• Impression and recommendation, summarizing the diagnostic outcome and next steps, if any
• Comparison with prior imaging, if available, should be noted in the radiology report to track changes or disease progression

Thorough reporting supports the revenue cycle by providing all necessary information to justify the selected CPT code and its medical necessity.

CPT code 71250 billing guidelines

CPT code 71250 is typically billed as a global service, which includes both the technical and professional components of the CT chest without contrast. To report only a portion of the service, use:

• Modifier -26 for only the professional component (e.g., interpretation by a radiologist), or
• Modifier -TC for only the technical component (e.g., facility providing the scan).

Do not report CPT code 71250 together with contrast-related chest CT codes like 71260 (with contrast) or 71270 (with and without contrast) for the same imaging session on the same date of service, as these codes are mutually exclusive and may trigger payer denials.

For lung cancer screening, use appropriate ICD-10 codes such as Z87.891 (personal history of nicotine dependence) or Z12.2 (encounter for screening for malignant neoplasm of respiratory organs). When billing under Medicare's screening program, ensure the patient meets eligibility criteria (e.g., age, smoking history, and shared decision-making documentation). Providers must carefully follow contracts and payer guidelines to ensure accurate billing, avoid denials, and support medicare payment.

Code 71250 is code-based, so billing accuracy depends on the indication, the body structures evaluated (lungs, ribs, mediastinum, etc.), and whether the service was limited to a non-contrast scan. Clear documentation and correct use of modifiers are essential for a smooth billing process and maintaining proper reimbursement across payers.