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Code deleted, see 78579, 78582-78598

Official Description

Pulmonary perfusion imaging, particulate, with ventilation; single breath

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 78584 involves pulmonary perfusion imaging, which is a diagnostic test used to assess blood flow in the lungs. During this imaging process, the physician administers a radioactive substance composed of particulate matter that is intentionally designed to be too large to pass through the capillaries within the lung tissue. This characteristic allows for the visualization of blood flow patterns in the lungs. A specialized camera is employed to capture images of the radioactive particles as they accumulate in the lung areas. The accumulation of these particles is critical for identifying regions of the lungs that may not be receiving adequate blood supply, which can indicate potential health issues. In addition to the perfusion imaging, the procedure also includes a ventilation test. In this part of the test, the patient inhales a radioactive gas, specifically Xenon, and is instructed to hold their breath for as long as possible. This technique enables the physician to visualize areas of the lungs that may not be ventilated properly, providing further insight into the patient's pulmonary function. Overall, this dual approach of assessing both perfusion and ventilation is essential for diagnosing various pulmonary conditions and determining appropriate treatment strategies.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The pulmonary perfusion imaging procedure described by CPT® Code 78584 is indicated for various clinical scenarios where assessment of lung function and blood flow is necessary. The following conditions may warrant this imaging study:

  • Evaluation of Pulmonary Embolism This imaging is often utilized to investigate suspected pulmonary embolism, a condition where blood clots obstruct blood flow in the lungs.
  • Assessment of Lung Function It is indicated for evaluating lung function in patients with known or suspected lung diseases, helping to determine the extent of any impairment.
  • Preoperative Assessment The procedure may be performed as part of the preoperative evaluation for patients undergoing lung surgery to assess the viability of lung tissue.
  • Monitoring of Lung Disease It can be used to monitor the progression of chronic lung diseases, such as chronic obstructive pulmonary disease (COPD) or interstitial lung disease.

2. Procedure

The procedure for pulmonary perfusion imaging with ventilation, as outlined in CPT® Code 78584, consists of several key steps that ensure accurate assessment of lung perfusion and ventilation. The following procedural steps are involved:

  • Step 1: Patient Preparation The patient is prepared for the procedure, which may include explaining the process and obtaining informed consent. The patient may be advised to avoid certain medications or foods prior to the test to ensure accurate results.
  • Step 2: Injection of Radioactive Particles The physician administers a radioactive particulate agent intravenously. These particles are specifically designed to be too large to pass through the capillaries, allowing for the visualization of blood flow in the lungs.
  • Step 3: Imaging with a Special Camera A specialized gamma camera is used to capture images of the lungs as the radioactive particles accumulate. The camera detects the emitted radiation from the particles, creating a visual representation of blood flow within the lung tissue.
  • Step 4: Ventilation Assessment Following the perfusion imaging, the patient inhales a radioactive gas, typically Xenon. The patient is instructed to hold their breath for an extended period, allowing the gas to distribute within the lungs. This step is crucial for assessing areas of the lungs that may not be ventilated properly.
  • Step 5: Image Acquisition and Analysis The images obtained from both the perfusion and ventilation phases are analyzed by the physician. The results help in identifying any abnormalities in blood flow and ventilation, contributing to the overall assessment of the patient's pulmonary health.

3. Post-Procedure

After the completion of the pulmonary perfusion imaging procedure, the patient may be monitored for a short period to ensure there are no immediate adverse reactions to the radioactive substances used. It is generally recommended that patients hydrate well to help flush the radioactive material from their system. The physician will review the imaging results and discuss any findings with the patient, which may lead to further diagnostic testing or treatment options based on the results. Patients are typically advised to resume normal activities unless otherwise directed by their healthcare provider.

Short Descr LUNG V/Q IMAGE SINGLE BREATH
Medium Descr PULM PI PART VNTJ 1 BRTH
Long Descr Pulmonary perfusion imaging, particulate, with ventilation; single breath
Status Code Active Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 1 - Diagnostic Tests for Radiology Services
Multiple Procedures (51) 0 - No payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Discontinued Code
Type of Service (TOS) 4 - Diagnostic Radiology
Berenson-Eggers TOS (BETOS) none
MUE Not applicable/unspecified.
CCS Clinical Classification 208 - Radioisotope pulmonary scan
Date
Action
Notes
2012-01-01 Deleted Code deleted, see 78579, 78582-78598
Pre-1990 Added Code added.
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Description
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