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Official Description

Gastric emptying imaging study (eg, solid, liquid, or both); with small bowel and colon transit, multiple days

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 78266 refers to a gastric emptying imaging study that assesses the transit of materials through the gastrointestinal (GI) tract, specifically focusing on both the small bowel and colon over multiple days. This procedure utilizes scintigraphy, a diagnostic imaging technique that employs radiolabeled isotope tracers to visualize and measure gastric motility. The study is noninvasive and is designed to evaluate how well the stomach empties its contents into the small intestine and how quickly materials move through the small bowel and colon. It is particularly useful in diagnosing conditions such as gastroparesis, which is characterized by delayed gastric emptying, as well as other gastrointestinal disorders including dyspepsia, abdominal pain, bloating, chronic diarrhea or constipation, idiopathic intestinal pseudo-obstruction, scleroderma, celiac disease, and malabsorption syndrome. During the procedure, the patient ingests a meal that contains the isotope tracer, which can be suspended in either solid or liquid form. For patients who are unable to consume food orally, such as infants or individuals with feeding difficulties, the tracer can be administered through a nasal feeding tube or gastrostomy tube. Following ingestion, the patient is positioned on an imaging table, and a gamma camera is used to capture images of the GI tract at predetermined intervals, allowing for the assessment of the movement of the ingested material. The results of the study are interpreted by a physician, who then provides a comprehensive written report detailing the findings.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The gastric emptying imaging study (CPT® Code 78266) is indicated for the evaluation of various gastrointestinal conditions. The following are the explicitly provided indications for this procedure:

  • Gastroparesis - A condition characterized by delayed gastric emptying, leading to symptoms such as nausea, vomiting, and bloating.
  • Dyspepsia - A term used to describe discomfort or pain in the upper abdomen, often associated with eating.
  • Abdominal Pain and Bloating - Symptoms that may indicate underlying gastrointestinal motility disorders.
  • Chronic Diarrhea or Constipation - Persistent changes in bowel habits that may be related to motility issues.
  • Idiopathic Intestinal Pseudo-Obstruction - A condition that mimics a blockage in the intestines without any physical obstruction present.
  • Scleroderma - A connective tissue disease that can affect the gastrointestinal tract and motility.
  • Celiac Disease - An autoimmune disorder that affects the absorption of nutrients in the small intestine.
  • Malabsorption Syndrome - A condition where the body cannot absorb nutrients properly from the gastrointestinal tract.

2. Procedure

The gastric emptying imaging study (CPT® Code 78266) involves several procedural steps to ensure accurate assessment of gastrointestinal motility. The following outlines the detailed steps of the procedure:

  • Step 1: Preparation of the Isotope Tracer - A radiolabeled isotope tracer is prepared and suspended in a meal that consists of solids, liquids, or both. This meal is designed to be ingested by the patient to facilitate the study of gastric emptying and transit through the GI tract.
  • Step 2: Patient Ingestion - The patient is instructed to ingest the prepared meal containing the isotope tracer. For patients who are unable to eat orally, such as infants or individuals with feeding difficulties, the tracer can be administered through a nasal feeding tube or gastrostomy tube.
  • Step 3: Imaging Setup - After the ingestion of the meal, the patient is positioned on an imaging table. A gamma camera is placed over the abdomen to capture the movement of the radiolabeled material through the GI tract.
  • Step 4: Scanning Intervals - Scanning is performed at specific intervals following the ingestion of the meal. The gamma camera detects the radioactive energy emitted from the tracer, which is then converted into images that illustrate the transit of the material through the stomach, small bowel, and colon.
  • Step 5: Interpretation of Results - Once the imaging is complete, a physician interprets the collected data and provides a written report detailing the findings of the gastric emptying study.

3. Post-Procedure

After the gastric emptying imaging study (CPT® Code 78266) is completed, there are typically no specific post-procedure care requirements, as the study is noninvasive. Patients may resume their normal activities immediately following the procedure. However, it is essential for the physician to review the results and discuss any necessary follow-up or additional testing based on the findings of the study. The written report generated by the physician will provide insights into the patient's gastrointestinal motility and any potential abnormalities that may require further evaluation or management.

Short Descr GASTRIC EMPTYING IMAG STUDY
Medium Descr GSTRC EMPTNG IMAG STD W/SM BWL COL TRNST MLT DAY
Long Descr Gastric emptying imaging study (eg, solid, liquid, or both); with small bowel and colon transit, multiple days
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 Procedure or Service, Not Discounted when Multiple
ASC Payment Indicator Radiology service paid separately when provided integral to a surgical procedure on ASC list; payment based on OPPS relative payment weight.
Berenson-Eggers TOS (BETOS) I4B - Imaging/procedure - other
MUE 1
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.
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
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
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
Date
Action
Notes
2017-01-01 Note AMA guidelines changed.
2016-01-01 Added Added
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