CPT 44405 Stoma Colonoscopy Reimbursement | OpenPayer

Summary & Overview

CPT 44405: Stoma Colonoscopy with Transendoscopic Balloon Dilation

CPT code 44405 designates a colonoscopic procedure performed through a stoma that includes transendoscopic balloon dilation to treat luminal narrowing. This code captures a specific therapeutic endoscopic service used to manage strictures in patients with a colostomy or ileostomy. Nationally, accurate coding for this service matters for clinical continuity, appropriate reimbursement, and tracking utilization of endoscopic dilation techniques in post‑surgical stoma care.

Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical scenario and service setting, an overview of common billing considerations tied to this code, and context about where the procedure is typically performed. The publication outlines relevant benchmarks and coding practice considerations, highlights implications for coverage and claims processing across major national payers, and provides clinical context to help coding and compliance teams map documentation to the CPT code description. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 44405colonoscopystomaballoon dilationendoscopygastroenterologyoutpatient-surgeryambulatory-surgery

Billing Code Overview

CPT code 44405 describes a colonoscopy performed through a stoma (an artificial opening in the skin) with transendoscopic balloon dilation to widen a narrowed segment. The procedure involves advancing an endoscope through the existing stoma to visualize the colon and deploying a dilation balloon to treat a stricture or stenotic area.

Service type: Endoscopic therapeutic procedure (colonoscopy with balloon dilation)
Typical site of service: Ambulatory surgical center or hospital outpatient department, performed where endoscopic therapeutic procedures are provided

Clinical & Coding Specifications

Clinical Context

A 62-year-old patient with a long-standing end colostomy presents with progressive difficulty passing stool and intermittent abdominal cramping. On evaluation the stoma demonstrates narrowing with partial obstruction symptoms and difficulty with appliance fit. The colorectal surgery team schedules a transstomal colonoscopic evaluation and transendoscopic balloon dilation to assess the stoma and adjacent colonic mucosa and to dilate the stenotic segment.

The clinical workflow: pre-procedure assessment and informed consent by the colorectal surgeon or gastroenterologist; stoma inspection and possible local anesthesia; insertion of a colonoscope through the stoma (transstomal colonoscopy) to identify the stenotic segment; placement of a through-the-scope balloon and graded inflation under direct vision to dilate the narrowing; post-dilation inspection for mucosal injury or bleeding; monitoring in recovery; and documentation of balloon size, dilation duration, number of inflations, immediate complications, and post-procedure instructions. Typical team members include the operating endoscopist, an endoscopy nurse, a circulating nurse or assistant, and anesthesia personnel if sedation or monitored anesthesia care is used.

Typical site of service: Endoscopy suite or outpatient ambulatory surgery center for elective cases; inpatient hospital setting if performed for acute obstruction or when the patient is admitted.

Service type: Therapeutic endoscopic procedure (transstomal colonoscopy with balloon dilation).

Coding Specifications

Modifier	Description	When to Use

CPT 44408: Colonoscopy Through Stoma with Decompression

CPT-44403-STOMAL-COLONOSCOPY-WITH-MUCOSAL-EXCISION

CPT 44403: Stomal Colonoscopy with Endoscopic Mucosal Excision

CPT-44402-STOMA-COLONOSCOPY-WITH-STENT-PLACEMENT

CPT 44402: Colonoscopy via Stoma with Endoscopic Stent Placement

CPT-44381-ILEOSCOPY-THROUGH-STOMA-WITH-BALLOON-DILATION

CPT 44381: Ileoscopy Through Stoma with Endoscopic Balloon Dilation

CPT-44407-STOMA-COLONOSCOPY-EUS-ASPIRATION-BIOPSY-LARGE-INTESTINE

CPT 44407: Stoma Colonoscopy with EUS-Guided Aspiration/Biopsy

CPT-44404-COLONOSCOPY-VIA-COLOSTOMY-WITH-SUBMUCOSAL-INJECTION

CPT 44404: Colonoscopy via Colostomy with Submucosal Injection

CPT-44406-STOMA-COLONOSCOPY-WITH-ENDOSCOPIC-ULTRASOUND-LARGE-INTESTINE

CPT 44406: Stoma-based Colonoscopy with Endoscopic Ultrasound

CPT-44390-COLONOSCOPY-THROUGH-COLOSTOMY-STOMA-FOREIGN-BODY-REMOVAL

CPT 44390: Colonoscopy Through Colostomy Stoma with Foreign Body Removal

CPT-44385-ILEAL-POUCH-ENDOSCOPIC-EVALUATION-WITH-BIOPSY-WASHINGS

CPT 44385: Endoscopic Evaluation of Ileal Pouch with Specimen Collection

CPT-44391-COLONOSCOPY-VIA-COLOSTOMY-STOMA-THERAPEUTIC-EVALUATION

CPT 44391: Colonoscopy via Colostomy Stoma with Endoscopic Repair

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Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`45378`	Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)	Diagnostic colonoscopy through the anus; similar endoscopic evaluation but not through a stoma. May be performed before or after transstomal procedures if full colonic evaluation is required.
`44360`	Colonoscopy through stoma; diagnostic, including collection of specimen(s) by brushing or washing, when performed	Diagnostic transstomal colonoscopy; used for evaluation without therapeutic dilation.
`45385`	Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique	Therapeutic endoscopic polypectomy which may be performed during the same session if lesions amenable to polypectomy are encountered.
`43238`	Esophagogastroduodenoscopy, flexible, transoral; with dilation of esophagus, balloon	Example of balloon dilation CPT for upper GI; conceptually similar technique — included for cross-reference of balloon dilation methodology.
`44372`	Endoscopic ultrasound, colon (if performed adjunctively)	Performed rarely but may be used adjunctively in complex lesions near a stoma requiring staging or assessment.

`11`	Waived or global period modifier (diagnostic procedural services)	Use when reporting a procedure performed in the normal course and no unusual circumstances modify the global period applicability.
`22`	Increased procedural services	Use when the procedure requires substantially greater work than typical (e.g., extensive adhesiolysis through stoma or prolonged dilation with complex maneuvers).
`23`	Unusual anesthesia	Use when general anesthesia is required due to unusual circumstances rather than usual moderate sedation.
`26`	Professional component	Use when separating the physician’s professional component from technical services (rare for endoscopy unless billing split with facility).
`52`	Reduced services	Use when the procedure is partially reduced or not completed as planned (e.g., unable to fully dilate due to anatomy).
`53`	Discontinued procedure	Use when the procedure is started but terminated for patient safety before the dilation is performed.
`54`	Surgical care only	Use when the surgeon bills only for the surgical portion and another provider bills for postoperative care.
`56`	Preoperative management only	Use when the provider bills only for preoperative management and not the procedure.
`62`	Two surgeons	Use when two surgeons of different specialties work together as primary surgeons on the same operative session.
`76`	Repeat procedure by same physician (note: not in raw list)	Data not available in the input.
`78`	Unplanned return to the operating room	Use when the patient requires an unplanned return to the OR for a related procedure during the postoperative period.
`80`	Assistant surgeon	Use when an assistant surgeon is required for the procedure.
`AS`	Physician assistant, nurse practitioner, or clinical nurse specialist services	Use when a qualified nonphysician practitioner performs or assists with the service as allowed by payer policy.
`QX`	Modifier for assistant-at-surgery (when assistant meets requirements)	Use per payer rules when an assistant-at-surgery participates and meets credentialing requirements.

Taxonomy Code	Specialty	Notes
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ICD-10 Code	Description	Clinical Relevance
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