Summary & Overview
CPT 43755: Gastric Tube Insertion with Gastric Secretion Collection
CPT code 43755 represents a diagnostic gastrointestinal procedure in which a gastric tube is inserted, a stimulant is administered to induce gastric acid secretion, and multiple gastric fluid specimens are obtained for laboratory analysis. This test is used to evaluate gastric acid production and can inform diagnosis and management of conditions that affect gastric secretory function. Nationally, procedures that assess gastric physiology remain important for distinguishing causes of dyspepsia, gastric acid hypersecretion, and other acid-related disorders.
Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical description of the service, typical sites of service, common billing modifiers (listed separately), and the context needed to interpret billing and coding for this procedure. The publication summarizes expected use cases, outlines where this procedure is commonly performed, and provides benchmarks and policy-related considerations relevant to third-party payers and Medicare. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 43755 describes insertion of a gastric tube with administration of a stimulant to provoke gastric acid secretion and collection of multiple gastric fluid specimens for laboratory analysis. The procedure involves placement of a tube into the stomach, stimulation of acid production, and aspiration of gastric secretions for diagnostic testing.
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Service type: Diagnostic gastrointestinal procedure involving gastric aspiration and secretion testing
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Typical site of service: Hospital outpatient department or ambulatory surgical center; may also be performed in an inpatient setting if clinically indicated
Clinical & Coding Specifications
Clinical Context
A 45-year-old outpatient with chronic upper abdominal pain and suspected hypochlorhydria is referred for diagnostic gastric analysis. The gastroenterologist performs placement of a nasogastric or orogastric tube, administers a gastric stimulant (commonly pentagastrin or equivalent) to provoke acid secretion, and collects timed gastric aspirates through the tube. Multiple specimens are obtained and sent to the laboratory for volume, pH, and acid concentration analysis to evaluate gastric acid secretory function and guide management for conditions such as Zollinger-Ellison syndrome, chronic gastritis, or unexplained dyspepsia. The procedure typically occurs in an outpatient endoscopy or gastroenterology suite, or an inpatient hospital ward for patients admitted with relevant symptoms. The clinical workflow includes informed consent, tube insertion with position confirmation, administration of the stimulant, serial aspiration and specimen labeling, documentation of volumes and times, sending specimens to the laboratory, and post-procedure monitoring for tolerance and complications such as epistaxis, aspiration, or tube malposition.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Main physician or other qualified health care professional service | Use when the reporting provider is the primary surgeon or performing physician for the procedure |