Summary & Overview
CPT 44157: Total Proctocolectomy with Ileoanal Anastomosis
CPT code 44157 represents a major colorectal operation—total proctocolectomy with ileoanal anastomosis—often performed for conditions requiring removal of the colon and rectum. The procedure can include mucosal stripping of the rectal cuff and may involve creation of a temporary external ileostomy. This code matters nationally because it captures a high-complexity inpatient surgical episode with significant implications for surgical quality reporting, inpatient resource utilization, and post-acute care planning.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides a national perspective on coding and clinical context rather than state-specific policy. Readers will find concise benchmarks for the service line and payer coverage patterns where available, clinical context explaining indications and typical care pathways, and notes on common billing modifiers and intended sites of service. Where specific payer policies, fee schedules, or utilization metrics are not provided in the input, the text states that the data are not available in the input.
This summary helps billing managers, surgical coders, and policy analysts quickly understand what CPT code 44157 denotes, the typical care setting, and what to expect in terms of payer engagement and documentation focus for major proctocolectomy with ileoanal reconstruction.
Billing Code Overview
CPT code 44157 describes a surgical procedure in which the provider removes the entire colon and the rectum, then connects the ileum to the anus. The procedure may include stripping the mucosa of the rectum and may involve creating an external opening using a loop of ileum.
Service type: Major abdominal colorectal surgery involving total proctocolectomy with ileoanal anastomosis (with or without mucosal stripping and temporary ostomy creation)
Typical site of service: Inpatient hospital operating room, with postoperative care in an inpatient hospital setting
Clinical & Coding Specifications
Clinical Context
A typical patient is a middle-aged to older adult with refractory ulcerative colitis, multifocal colonic neoplasia, or familial adenomatous polyposis who requires surgical removal of the entire colon and rectum. The patient has undergone preoperative evaluation including colonoscopy, contrast imaging, nutritional assessment, and anesthesia clearance. The surgical team performs a total proctocolectomy with ileoanal anastomosis (44157): removal of the colon and rectum, creation of an ileoanal pouch or direct ileum-to-anus anastomosis, and optional mucosal stripping of the rectal cuff. In some cases a temporary loop ileostomy is created for fecal diversion.
Perioperative workflow includes informed consent, bowel preparation, perioperative antibiotics and venous thromboembolism prophylaxis, intraoperative coordination between colorectal surgeon and anesthesia, specimen removal and pathological submission, and postoperative monitoring in a surgical unit with attention to fluid/electrolyte management, pain control, stoma care if created, and progressive diet advancement. Subsequent visits include wound checks, stoma teaching, and outpatient follow-up for pouch function and surveillance.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier (standard) | Used when no additional modifiers apply to the service. |