Summary & Overview
HCPCS G6018: Ileoscopy Through Stoma with Transendoscopic Stent Placement
HCPCS Level II code G6018 denotes ileoscopy performed through a stoma with transendoscopic stent placement, including predilation. This code captures a specialized therapeutic endoscopic procedure used to manage ileal strictures or obstructions in patients with a stoma. Nationally, accurate coding of this service affects hospital outpatient and ambulatory surgery center billing, utilization tracking, and quality measurement for complex enteric interventions. Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will learn the clinical context and procedural scope represented by G6018, how this code fits into service lines for gastrointestinal and stoma-related care, and what benchmarks and policy considerations commonly apply to transendoscopic stent placement through a stoma. The publication outlines payment and coverage patterns across major national payers, common coding considerations, and implications for site-of-service designation. It also summarizes relevant documentation elements that typically support medical necessity for therapeutic endoscopy with stent placement. Data not available in the input will be noted where applicable.
Billing Code Overview
HCPCS Level II code G6018 describes ileoscopy performed through a stoma with transendoscopic stent placement, and includes predilation. This procedure involves endoscopic access to the ileum via an existing stoma to place a stent across a stenotic or obstructed segment using transendoscopic techniques.
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Service type: Endoscopic stent placement via stoma (therapeutic endoscopy)
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Typical site of service: Hospital outpatient department or ambulatory surgery center where endoscopic procedures through a stoma are performed
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Clinical & Coding Specifications
Clinical Context
A typical patient is a 62-year-old with a permanent ileostomy presenting with symptoms of partial small-bowel obstruction (crampy abdominal pain, nausea, decreased stoma output) and imaging suggesting a short-segment anastomotic stricture or extrinsic compression near the ileostomy. After conservative measures fail, the colorectal surgery and gastroenterology teams plan an ileoscopy through the stoma with transendoscopic stent placement to relieve the obstruction. The clinical workflow: pre-procedure evaluation (history, focused exam, informed consent, review of imaging and coagulation status), procedural sedation or monitored anesthesia care, sterile preparation of the stoma, insertion of a flexible endoscope through the stoma to visualize the ileal lumen, endoscopic assessment and predilation of the stenotic segment if required, deployment of a self-expanding enteric stent across the target lesion, confirmation of stent position and luminal patency, post-procedure monitoring in recovery, discharge instructions regarding stoma care and signs of complication, and scheduled follow-up for stent surveillance and possible removal or exchange if indicated. Typical site of service is an ambulatory endoscopy suite, hospital outpatient department, or operating room when combined with other surgical procedures. Service type is an endoscopic therapeutic procedure: ileoscopy via stoma with transendoscopic stent placement (includes predilation).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing for the physician's interpretation/technical component is billed separately and only the professional portion is reported. |