Summary & Overview
CPT 44377: Upper Gastrointestinal Endoscopy with Biopsy
CPT code 44377 represents a diagnostic upper gastrointestinal endoscopy with biopsy, involving visualization of the digestive tract from the esophagus through the ileum and sampling of suspicious tissue for pathology. This code captures a commonly performed, clinically important procedure used to evaluate symptoms such as abdominal pain, bleeding, anemia, or suspected malignancy. Nationally, accurate coding for this service supports appropriate clinical documentation, quality measurement, and payment for facility and professional components.
Key payers in the scope of this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for CPT code 44377, typical sites of service, and the common use cases that drive utilization. The publication also summarizes how the code fits into billing workflows and what benchmarks and policy updates to watch at a national level.
This overview is intended to help billing professionals, practice managers, and policy analysts understand the clinical content and administrative implications of CPT code 44377, enabling clearer communication between clinicians, coders, and payers.
Billing Code Overview
CPT code 44377 describes a diagnostic endoscopic procedure in which the provider performs a visual examination of the upper gastrointestinal tract using a lighted endoscope and inspects the digestive tract from the esophagus to the ileum. If suspicious lesions are identified, the provider obtains one or more biopsies for pathologic analysis.
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Service type: Diagnostic upper gastrointestinal endoscopy with biopsy
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Typical site of service: Endoscopy suite, hospital outpatient department, or ambulatory surgical center
Clinical & Coding Specifications
Clinical Context
A 58-year-old patient presents to the outpatient endoscopy unit with progressive dysphagia, intermittent upper abdominal pain, and unexplained iron-deficiency anemia. After pre-procedure evaluation, informed consent, and appropriate fasting, the patient is taken to the endoscopy suite. Under monitored anesthesia care, the gastroenterologist performs an upper endoscopic examination using a lighted flexible endoscope to evaluate the esophagus, stomach, and proximal small bowel up to the ileum when indicated. During inspection, the provider identifies an erythematous nodular lesion in the distal esophagus and obtains targeted mucosal biopsies for histopathologic analysis. The specimen is labeled and sent to pathology; intra-procedure documentation includes indications, findings, number and site of biopsies, any complications, estimated blood loss (if applicable), and disposition. Typical sites of service are the hospital outpatient department or ambulatory surgery center. The service type is diagnostic upper gastrointestinal endoscopy with biopsy, performed by a gastroenterologist or surgeon, with possible anesthesia support and pathology follow-up required for diagnostic interpretation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier; standard reporting | Use for routine reporting per payer when no specific modifier applies |