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Code deleted, see 94618.

Official Description

Pulmonary stress testing; simple (eg, 6-minute walk test, prolonged exercise test for bronchospasm with pre- and post-spirometry and oximetry)

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

Pulmonary stress testing is a diagnostic procedure designed to assess the functional capacity of the lungs, heart, and muscles during physical exertion. This testing is particularly valuable for patients who present with respiratory symptoms, such as shortness of breath, as it aids in identifying the underlying causes of these symptoms. The procedure can be conducted using various methods, including a treadmill or stationary bicycle; however, in simpler tests, patients may simply walk back and forth in a long hallway. Prior to initiating the stress test, baseline measurements of lung function and oxygen levels are obtained through spirometry and oximetry. In the context of a simple pulmonary stress test, identified by CPT® Code 94620, the patient engages in exercise for a predetermined duration without continuous monitoring. Following the exercise, spirometry and oximetry assessments are repeated to evaluate any changes from the baseline values. This contrasts with a more complex pulmonary stress test, which involves continuous monitoring of various parameters during the exercise phase. The results from either type of test are subsequently analyzed by a physician, who provides a comprehensive written interpretation of the findings, contributing to the overall understanding of the patient's respiratory and cardiovascular health during exertion.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The pulmonary stress testing procedure is indicated for patients experiencing respiratory symptoms that may include, but are not limited to, the following conditions:

  • Shortness of Breath: Patients who report difficulty in breathing during physical activity may require this test to determine the underlying cause.
  • Evaluation of Exercise-Induced Bronchospasm: This test can help identify bronchospasm that occurs during exercise, which is crucial for managing conditions like asthma.
  • Assessment of Cardiopulmonary Function: Individuals with known cardiovascular or pulmonary diseases may undergo this test to evaluate their functional capacity and response to exercise.

2. Procedure

The procedure for pulmonary stress testing involves several key steps to ensure accurate assessment of the patient's respiratory and cardiovascular responses to exercise:

  • Step 1: Baseline Measurements Before the exercise begins, baseline spirometry and oximetry values are obtained. This initial data serves as a reference point for comparison after the exercise phase.
  • Step 2: Exercise Phase In the simple pulmonary stress test (CPT® Code 94620), the patient engages in a prescribed exercise regimen, which may involve walking back and forth in a hallway or using a treadmill or stationary bicycle. During this phase, the patient is not continuously monitored, allowing for a straightforward assessment of their exercise capacity.
  • Step 3: Post-Exercise Measurements Upon completion of the exercise, spirometry and oximetry readings are taken again. These post-exercise values are compared to the baseline measurements to evaluate any changes in lung function and oxygen saturation.
  • Step 4: Interpretation of Results After the test, the physician reviews the collected data, including both baseline and post-exercise measurements, and provides a written interpretation of the findings. This interpretation is crucial for understanding the patient's respiratory and cardiovascular health during physical exertion.

3. Post-Procedure

After the pulmonary stress testing is completed, patients may be advised to rest and monitor for any unusual symptoms, such as prolonged shortness of breath or chest discomfort. The physician will review the results with the patient, discussing any significant findings and potential next steps in management or further testing if necessary. It is important for patients to follow any specific post-procedure instructions provided by their healthcare provider to ensure optimal recovery and understanding of their test results.

Short Descr PULMONARY STRESS TEST/SIMPLE
Medium Descr PULMONARY STRESS TESTING SIMPLE
Long Descr Pulmonary stress testing; simple (eg, 6-minute walk test, prolonged exercise test for bronchospasm with pre- and post-spirometry and oximetry)
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 STV-Packaged Codes
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) T2D - Other tests - other
MUE Not applicable/unspecified.
CCS Clinical Classification 38 - Other diagnostic procedures on lung and bronchus
Date
Action
Notes
2017-12-31 Deleted Code deleted, see 94618.
2007-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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