CPT code 44150: Total colectomy, rectum retained; ileostomy or ileoproctostomy2026 Medicare rate & RVUs in Michigan
Report this open operation when the surgeon removes the entire colon, preserves the rectum, and creates an ileostomy or ileoproctostomy.
CMS doesn’t publish an office rate for 44150 in Michigan.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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On this page 9 sections
What 44150 covers
The surgeon removes the colon through an abdominal approach while leaving the rectum in place. The reconstruction is an ileostomy or a connection from the ileum to the rectum. This operation may be performed for conditions such as ulcerative colitis or familial adenomatous polyposis when the surgical plan removes the colon but preserves the rectum. It is typically performed in a hospital operating room by a general or colorectal surgeon.
Choose the code when the operative report supports removal of the entire colon, preservation of the rectum, and one of the specified reconstructions; partial colectomy and procedures that remove the rectum belong elsewhere. The code includes the reconstruction, so do not separately report creation of the ileostomy or ileoproctostomy. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. In a same-session multiple-procedure claim, the highest-valued procedure is paid in full and others at 50%. Assistant-at-surgery payment may be available; co-surgeon payment requires supporting documentation, and team surgery is not permitted.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
Where 44150 pays more and less in Michigan
| Payment locality | Office | Facility |
|---|---|---|
| Detroit, MI | Unavailable | $1,867.85 |
| Rest of Michigan | Unavailable | $1,714.45 |
How the 44150 rate is calculated
Each of 44150’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · 44150
RVUs × geographic indexes × conversion factor
Work29.43
29.43 RVUs× 1.000 GPCI
Practice expense15.59
15.59 RVUs× 1.000 GPCI
Malpractice6.79
6.79 RVUs× 1.000 GPCI
Adjusted RVUs
51.8100
Conversion factor
$33.4009
Medicare rate
$1,730.50
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 44150
44150 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 44150
Total colectomy, rectum retained; ileostomy or ileoproctostomy
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 2 | Paid. |
| Co-surgeons (62) | 1 | Permitted with supporting documentation. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.09/0.81/0.10 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 44150
Total colectomy, rectum retained; ileostomy or ileoproctostomy
90-day global period ends
Dec 30, 2026
Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).
Visit on Oct 31, 2026
Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
44150 without 51 · national facility
$1,730.50
Total colectomy, rectum retained; ileostomy or ileoproctostomy
44150-51 · Second procedure: 50%
$865.25
When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).
44150 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 44151Total colectomyContinent ileostomy
- Both remove the entire colon and preserve the rectum, but 44151 describes creation of a continent ileostomy rather than the ileostomy or ileoproctostomy covered here.
- 44155ColectomyWith proctectomy and ileostomy
- 44155 includes removal of the rectum and creation of an ileostomy. This code is for an operation that leaves the rectum in place.
- 44140Partial colectomyWith anastomosis
- 44140 describes partial colectomy with anastomosis. Choose this code when the entire colon is removed and the rectum is preserved.
- 44210Total colectomyLaparoscopic, rectum retained
- 44210 describes the laparoscopic approach to this total-colectomy configuration. This code describes the open abdominal approach.
44150 billing questions
How does this differ from a partial colectomy?
Use this code when the entire colon is removed and the rectum is preserved. A partial colectomy, such as 44140, removes less than the whole colon.
Is the ileostomy or ileoproctostomy separately reported?
No. The reconstruction is part of this colectomy service; the operative report should identify which reconstruction was performed.
When should 44151 be used instead?
44151 is for total abdominal colectomy without proctectomy when the reconstruction is a continent ileostomy. This code covers an ileostomy or ileoproctostomy.
How does rectum removal change code selection?
This code preserves the rectum. When the operation includes proctectomy, consider the total-colectomy codes that describe rectal removal and the resulting reconstruction, such as 44155 or 44156.
What documentation supports reporting this code?
The operative report should establish that the entire colon was removed, the rectum was retained, and the reconstruction was an ileostomy or ileoproctostomy.
How are assistant and co-surgeon services handled?
CMS may pay for an assistant at surgery. Co-surgeon payment requires supporting documentation; team-surgery payment is not permitted.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
Show the CMS file lines behind this rate
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