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CPT®
0105T

CPT® Code 0105T
Deleted

Code deleted, to report see 93799

Official Description

Inert gas rebreathing for cardiac output measurement; during exercise

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 0105T involves the use of inert gas rebreathing to measure cardiac output during exercise. This technique utilizes an inert gas, such as helium, which the patient inhales and subsequently rebreathes. The primary purpose of this procedure is to accurately assess the volume of blood that the heart pumps, known as cardiac output, while the patient is engaged in physical activity. This measurement is crucial for evaluating cardiovascular function and can help in diagnosing various heart conditions. The use of inert gas allows for a non-invasive method to gather important physiological data, providing insights into the heart's performance under stress, which is particularly relevant during exercise. It is important to note that if the test is conducted without exercise, a different code, 0104T, should be used instead. This distinction is essential for accurate coding and billing purposes.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure using CPT® Code 0105T is indicated for the assessment of cardiac output during exercise. This measurement is particularly relevant for patients who may have symptoms or conditions that warrant evaluation of their cardiovascular response to physical activity. The following are specific indications for performing this procedure:

  • Cardiac Dysfunction Patients with known or suspected heart conditions, such as heart failure or cardiomyopathy, may require this test to evaluate how well their heart functions during exertion.
  • Exercise Intolerance Individuals experiencing unexplained fatigue or shortness of breath during physical activity may undergo this procedure to determine if their cardiac output is adequate during exercise.
  • Preoperative Assessment Patients undergoing surgical procedures, particularly those involving the heart or lungs, may be assessed for cardiac output to ensure they can tolerate the stress of surgery.
  • Monitoring Treatment Efficacy Patients receiving treatment for cardiovascular conditions may have this test performed to monitor the effectiveness of their therapy and make necessary adjustments.

2. Procedure

The procedure for CPT® Code 0105T involves several key steps to ensure accurate measurement of cardiac output during exercise. The following outlines the procedural steps:

  • Preparation of the Patient The patient is prepared for the test by explaining the procedure and ensuring they understand the importance of the exercise component. Baseline measurements may be taken to establish a reference point for cardiac output.
  • Inert Gas Administration The patient is instructed to inhale an inert gas, such as helium, which is used for the rebreathing process. This gas is chosen for its non-toxic properties and ability to provide accurate measurements of blood flow.
  • Exercise Protocol The patient is then engaged in a controlled exercise regimen, which may involve walking on a treadmill or using a stationary bike. The intensity and duration of the exercise are monitored to ensure they are appropriate for the patient's condition.
  • Rebreathing Phase During the exercise, the patient rebreathes the inert gas through a specialized mask or device that captures the gas exhaled. This phase is critical for measuring the volume of blood pumped by the heart as the patient exerts themselves.
  • Data Collection and Analysis Throughout the procedure, data is collected regarding the concentration of the inert gas in the patient's exhaled air. This information is analyzed to calculate the cardiac output based on the changes in gas concentration during the exercise.

3. Post-Procedure

After the completion of the procedure, the patient is monitored for any immediate reactions to the inert gas or the exercise performed. It is essential to ensure that the patient is stable before they leave the testing area. The results of the cardiac output measurement are typically analyzed and documented in the patient's medical record. Follow-up appointments may be scheduled to discuss the findings and any necessary further evaluations or treatments based on the results. Patients are advised to resume their normal activities unless otherwise directed by their healthcare provider.
Short Descr EXERC CARDIO GAS REBREATHE
Medium Descr INERT GAS RBRTHING CAR OUTPUT MEAS XERS
Long Descr Inert gas rebreathing for cardiac output measurement; during exercise
Status Code Carriers Price the Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 0 - Physician Service Code
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 Service Paid under Fee Schedule or Payment System other than OPPS
Type of Service (TOS) 9 - Other Medical Items or Services
Berenson-Eggers TOS (BETOS) none
MUE Not applicable/unspecified.
CCS Clinical Classification 62 - Other diagnostic cardiovascular procedures
Date
Action
Notes
2011-01-01 Deleted Code deleted, to report see 93799
2006-01-01 Added Code added.
Code
Description
Code
Description
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