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Official Description

Cardiac blood pool imaging, gated equilibrium, single study, at rest, with right ventricular ejection fraction by first pass technique (List separately in addition to code for primary procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Cardiac blood pool imaging, specifically using the gated equilibrium technique, is a diagnostic procedure that evaluates the function of the heart, particularly focusing on the right ventricle. This imaging technique employs scintigraphy, which involves the use of a radiolabeled isotope tracer to visualize blood flow and cardiac function. The procedure is conducted while the patient is at rest, allowing for a stable assessment of cardiac performance without the influence of physical exertion. A key measurement obtained during this imaging is the right ventricular ejection fraction (RVEF), which quantifies the percentage of blood that is ejected from the right ventricle with each heartbeat. This is crucial for diagnosing various cardiac conditions. During the procedure, the patient is positioned on an imaging table, and electrodes are placed on the chest to continuously monitor the heart's electrical activity through an electrocardiogram (ECG). The gamma camera, which detects the radiation emitted by the radiolabeled tracer, is strategically positioned over the chest to capture images of the heart. The ECG is synchronized with the camera to ensure that images are taken at precise moments in the cardiac cycle, enhancing the clarity and resolution of the images obtained. The radiolabeled isotope tracer is injected intravenously, allowing it to circulate through the heart. The gated equilibrium technique records images based on the electrical signals from the ECG, capturing data at specific phases of the cardiac cycle, such as during the diastolic phase when the heart is relaxed. This method results in high-resolution images that provide valuable insights into the heart's function. The RVEF is calculated using the images obtained during the first pass of the tracer through the heart, allowing for an accurate assessment of right ventricular performance. Following the imaging, the physician interprets the results and generates a comprehensive written report detailing the findings of the study.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The cardiac blood pool imaging procedure using gated equilibrium is indicated for various clinical scenarios where assessment of the right ventricular function is necessary. The following conditions may warrant this imaging study:

  • Heart Failure Evaluation of right ventricular function in patients with suspected or known heart failure to determine the severity and impact on overall cardiac performance.
  • Cardiac Ischemia Assessment of right ventricular ejection fraction in patients with ischemic heart disease to evaluate the extent of cardiac damage and functional impairment.
  • Congenital Heart Disease Evaluation of right ventricular function in patients with congenital heart defects to guide treatment decisions and monitor progress.
  • Pulmonary Hypertension Assessment of right ventricular function in patients diagnosed with pulmonary hypertension to evaluate the impact on the right ventricle.

2. Procedure

The cardiac blood pool imaging procedure involves several critical steps to ensure accurate assessment of the right ventricular ejection fraction. The following procedural steps are performed:

  • Patient Preparation The patient is positioned comfortably on the imaging table, and cardiac electrodes are placed on the chest to establish continuous electrocardiogram (ECG) monitoring. This setup is essential for synchronizing the imaging process with the heart's electrical activity.
  • Tracer Injection An intravenous line is established, and a radiolabeled isotope tracer is injected directly into the patient's circulatory system. This tracer is crucial for visualizing blood flow and cardiac function during the imaging process.
  • Image Acquisition The gamma camera(s) are positioned over the patient's chest, and the ECG is interfaced with the camera(s). Scanning is performed using the gated equilibrium technique, where images are captured at specific phases of the cardiac cycle, as dictated by the ECG waveforms. This gating process allows for the collection of high-resolution images that reflect the heart's activity.
  • Right Ventricular Ejection Fraction Measurement The right ventricular ejection fraction is measured using the first pass technique, which involves analyzing the images obtained as the radiolabeled isotope tracer circulates through the heart. The radioactive energy emitted is converted into images, and the RVEF is derived from the heart muscle activity versus the time curve created during the imaging.
  • Interpretation and Reporting After the imaging is complete, the physician interprets the study results and compiles a written report detailing the findings, including the calculated right ventricular ejection fraction and any other relevant observations.

3. Post-Procedure

Post-procedure care for patients undergoing cardiac blood pool imaging is generally minimal, as the procedure is non-invasive and performed at rest. Patients may be monitored briefly to ensure there are no immediate adverse reactions to the radiolabeled tracer. The physician will review the imaging results and provide a comprehensive report, which may include recommendations for further evaluation or treatment based on the findings. Patients are typically advised to resume normal activities unless otherwise instructed. Follow-up appointments may be scheduled to discuss the results and any necessary next steps in management.

Short Descr HEART FIRST PASS ADD-ON
Medium Descr CARD BL POOL GATED 1 STDY REST RT VENT EJCT FRCT
Long Descr Cardiac blood pool imaging, gated equilibrium, single study, at rest, with right ventricular ejection fraction by first pass technique (List separately in addition to code for primary procedure)
Status Code Active Code
Global Days ZZZ - Code Related to Another Service
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 Items and Services Packaged into APC Rates
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 4 - Diagnostic Radiology
Berenson-Eggers TOS (BETOS) I1E - Standard imaging - nuclear medicine
MUE 1
CCS Clinical Classification 209 - Radioisotope scan and function studies

This is an add-on code that must be used in conjunction with one of these primary codes.

78472 MPFS Status: Active Code APC S ASC Z2 PUB 100 CPT Assistant Article Cardiac blood pool imaging, gated equilibrium; planar, single study at rest or stress (exercise and/or pharmacologic), wall motion study plus ejection fraction, with or without additional quantitative processing
26 Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number.
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
GC This service has been performed in part by a resident under the direction of a teaching physician
ME The order for this service adheres to appropriate use criteria in the clinical decision support mechanism consulted by the ordering professional
MG The order for this service does not have applicable appropriate use criteria in the qualified clinical decision support mechanism consulted by the ordering professional
MH Unknown if ordering professional consulted a clinical decision support mechanism for this service, related information was not provided to the furnishing professional or provider
Q5 Service furnished under a reciprocal billing arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
Date
Action
Notes
1999-01-01 Added First appearance in code book in 1999.
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