Summary & Overview
CPT 44156: Total Colectomy with Ileal Pouch Continent Ileostomy
CPT code 44156 describes removal of the entire colon and rectum with construction of an ileal pouch and creation of a continent ileostomy. This procedure is a major reconstructive bowel surgery used when preservation of continence via an internal reservoir is indicated. It carries significant clinical and resource implications because it requires advanced surgical expertise, extended operative time and inpatient postoperative management, and often multidisciplinary perioperative care. Nationally, this code matters for surgical practice patterns, hospital resource planning, and payer coverage policies for complex colorectal surgery.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will find a concise overview of clinical context, typical site-of-service considerations, and what to expect in claims and coding for this major operative service. The publication outlines benchmarks commonly tracked for complex colorectal procedures, highlights relevant policy and coverage considerations at a national level, and summarizes clinical indications and postoperative resource needs. Data not available in the input is noted where applicable; the narrative focuses on the code definition, settings of care, and the types of analyses and policy questions relevant to 44156 without state-level specifics.
Billing Code Overview
CPT code 44156 describes a surgical procedure in which the provider removes the entire colon and rectum, constructs an ileal pouch from the terminal ileum, and connects that pouch to the abdominal skin as a continent ileostomy. This is a complex abdominal surgery that creates an internal reservoir from small bowel with an external stoma catheterizable through the abdominal wall.
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Service type: Major abdominal reconstructive surgery involving bowel resection and pouch formation
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Typical site of service: Inpatient hospital operating room with postoperative inpatient care
Clinical & Coding Specifications
Clinical Context
A typical patient is a 25–50 year-old adult with medically refractory ulcerative colitis or familial adenomatous polyposis who requires definitive removal of the colon and rectum and creation of a continent ileostomy. The workflow begins with multidisciplinary evaluation (gastroenterology, colorectal surgery, anesthesiology), preoperative optimization (nutrition, infection screening, immunosuppression management), and informed consent discussing risks of pelvic dissection and stoma-related complications. On the day of surgery the patient is taken to the operating room for total proctocolectomy with ileal pouch construction and external abdominal continent stoma formation (continent ileostomy). Postoperatively patients are monitored in a post-anesthesia care unit and frequently in an inpatient surgical unit for pain control, fluid and electrolyte management, pouch function education, and wound care. Typical follow-up includes outpatient visits at 2 weeks, 6 weeks, and ongoing surveillance for pouch function and complications such as obstruction, pouchitis, or stomal problems. Payors commonly involved include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier — standard reporting. | Use when no modifier applies and service is billed as usual. |