CPT® Code 91132

1. Indications

Electrogastrography (EGG) is indicated for patients presenting with various gastrointestinal symptoms that may suggest underlying motility disorders or dysrhythmias. The specific indications for performing this diagnostic procedure include:

• Persistent Nausea Patients who experience ongoing feelings of nausea that do not resolve with standard treatments may require EGG to investigate potential motility issues.
• Vomiting Individuals with recurrent vomiting episodes may benefit from EGG to determine if there are any abnormalities in gastric electrical activity contributing to this symptom.
• Early Satiety Patients who feel full after consuming only a small amount of food may have underlying gastric dysrhythmias, making EGG a useful diagnostic tool.
• Epigastric Discomfort Those experiencing discomfort in the upper abdomen may have motility disorders that can be assessed through EGG.

2. Procedure

The procedure for diagnostic transcutaneous electrogastrography involves several key steps to ensure accurate recordings of the stomach's electrical activity. The steps are as follows:

• Step 1: Sensor Placement The first step involves placing multiple sensors on the skin of the abdomen at standardized positions. This is crucial for obtaining reliable data, as the sensors must be positioned correctly to capture the electrical signals generated by the stomach.
• Step 2: Initial Recordings Once the sensors are in place, the technician will begin recording the electrical activity of the stomach. This initial recording is essential for establishing a baseline and identifying the site with the highest amplitude of electrical activity.
• Step 3: Selection of Optimal Site After the initial recordings, the site with the highest amplitude is selected for further analysis. This step is important as it focuses on the most active area of the stomach, which is likely to provide the most relevant information regarding gastric function.
• Step 4: Additional Recordings Following the selection of the optimal site, additional recordings are made to evaluate changes in EGG amplitude and frequency. These changes can provide insights into the gastric motility and any potential dysrhythmias present.
• Step 5: Interpretation of Results Finally, the physician interprets the EGG recordings, analyzing the data collected to identify any abnormalities. A written report detailing the findings is then provided, which may guide further clinical management.

3. Post-Procedure

After the completion of the electrogastrography procedure, patients may resume their normal activities immediately, as the procedure is non-invasive and does not typically require any recovery time. The physician will review the recorded data and provide a written interpretation of the results, which may include recommendations for further testing or treatment based on the findings. Patients should follow up with their healthcare provider to discuss the results and any necessary next steps in their care plan.