71275

Computed tomography angiography, chest, with contrast material(s), including noncontrast images, if performed, and image postprocessing.

CPT code 71275 represents a Computed Tomography Angiography (CTA) of the chest. This comprehensive imaging study involves the intravenous administration of contrast material to visualize the blood vessels of the chest, including the pulmonary arteries, aorta, and their major branches. The procedure typically includes the acquisition of both noncontrast images (if deemed necessary by the physician to assess calcifications or other baseline pathology) and contrast-enhanced images. Crucially, the code also encompasses advanced image postprocessing techniques (e.g., multiplanar reconstructions, maximum intensity projections, volume rendering) essential for detailed anatomical and pathological assessment. CTA of the chest is a highly detailed, non-invasive method used to diagnose and characterize vascular conditions within the thoracic cavity, providing crucial information for treatment planning.

Clinical Indications

  • Suspected pulmonary embolism (acute or chronic)
  • Evaluation of aortic aneurysm, dissection, or pseudoaneurysm
  • Pre-operative planning for cardiovascular surgery (e.g., CABG, valve replacement)
  • Assessment of congenital heart disease (e.g., tetralogy of Fallot, transposition of great arteries)
  • Diagnosis and characterization of vascular malformations (e.g., AVMs)
  • Evaluation of unexplained chest pain or dyspnea when other etiologies have been ruled out or are less likely
  • Assessment of pulmonary hypertension etiology
  • Detection and characterization of central venous obstruction or stenosis
  • Evaluation of mediastinal masses or tumors for vascular involvement

Procedure Steps

  1. Patient preparation, including explanation of the procedure, obtaining informed consent, and checking for contraindications to contrast material (e.g., renal impairment, allergies).
  2. Placement of an intravenous catheter for contrast administration.
  3. Acquisition of scout images (topogram) to plan the scanning range.
  4. Performance of noncontrast CT images of the chest, if clinically indicated.
  5. Administration of iodinated contrast material via intravenous injection, often using a power injector with a timing bolus or bolus tracking technique to optimize arterial opacification.
  6. Rapid sequential CT image acquisition during the arterial phase (or venous phase depending on clinical indication) through the chest.
  7. Reconstruction of raw data into diagnostic quality axial images.
  8. Performance of advanced image postprocessing, which may include multiplanar reconstructions (MPR), maximum intensity projections (MIP), minimum intensity projections (MinIP), curved planar reconstructions (CPR), and/or 3D volume rendering (VR) to enhance visualization of vascular structures.
  9. Radiological interpretation and generation of a comprehensive report detailing findings.

Coding Guidelines

  • CPT code 71275 specifically includes the contrast material(s), noncontrast images (if performed), and image postprocessing. Do not report separate codes for these components.
  • This code should not be reported in conjunction with standard CT chest codes (e.g., 71250, 71260, 71270) when a CTA is performed on the same day for the same vascular structures.
  • The professional component includes the interpretation of all acquired images and the generation of a comprehensive report.
  • A separate intravenous contrast administration code (e.g., 96374 for therapeutic, prophylactic, or diagnostic injection) is typically not reported separately for diagnostic imaging procedures where contrast administration is inherent to the procedure's description, as is the case for 71275.
  • Documentation must clearly support the medical necessity for a CTA of the chest, specifying the indication and the specific vascular structures evaluated.

Associated ICD-10 Codes