No office rate
44140 reports the open partial colectomy. Add 44139 only when the surgeon also performs separately documented splenic flexure mobilization.
On this page
CMS RVU26D · Effective 2026-10-01
44139 Colon mobilization Medicare reimbursement rates in Illinois
Reports additional mobilization of the splenic flexure during an eligible colectomy when the colon must be freed to provide adequate length for reconstruction. Compare 44139 office and facility rates across CMS payment localities in Illinois.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for 44139 in Illinois?
Illinois has 4 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 4 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$114.53–$128.67
4 of 4 localities have a supported rate.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Where 44139 pays more and less in Illinois
Colorectal surgery
About 44139: Splenic flexure mobilization
Reports additional mobilization of the splenic flexure during an eligible colectomy when the colon must be freed to provide adequate length for reconstruction.
The surgeon frees the splenic flexure from its attachments to increase the length and mobility of the colon, commonly to support a colorectal or colocolonic reconstruction during colectomy. This work is typically performed by a colorectal or general surgeon in the operating room as part of the same operative session as the colon resection. The operative report should distinguish the mobilization from the resection itself and describe the additional dissection performed.
Report 44139 only with an eligible primary colectomy procedure; it is not a standalone service. Documentation should show that splenic flexure mobilization was performed, rather than treating routine exposure or handling of the colon as a separate service. CMS classifies it as an add-on code: it is billed with the primary procedure and paid within that procedure’s global period. The primary code identifies the colectomy performed, while 44139 captures the additional mobilization work.
CMS billing rules for 44139
- Global period
- Add-on code: billed only together with a primary procedure and paid within that procedure's global period.
Where the value comes from
- Work RVU2.17 · 68%
- Practice expense (office) RVU0.54 · 17%
- Malpractice RVU0.49 · 15%
7K
Medicare services in 2024 · #1659 by national volume
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.
44139 compared with similar codes
Office rates for Illinois, from the same CMS release.
No office rate
44145 identifies an open partial colectomy with coloproctostomy; it does not by itself report additional splenic flexure mobilization.
No office rate
44213 is the laparoscopic splenic flexure mobilization add-on. Use 44139 for the open approach and 44213 for the laparoscopic approach.
Compare 44139 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
4 of 4 payment localities
Chicago →
Office / nonfacility
Unavailable
Facility
$128.67
East St. Louis →
Office / nonfacility
Unavailable
Facility
$122.04
Rest Of Illinois →
Office / nonfacility
Unavailable
Facility
$114.53
Suburban Chicago →
Office / nonfacility
Unavailable
Facility
$120.51
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44139 billing questions
When is 44139 reported with a colectomy?
Report it when the surgeon performs additional splenic flexure mobilization during an eligible colectomy. The operative note should describe the dissection and mobilization, not just the colectomy.
Can 44139 be billed by itself?
No. It is an add-on code and must be billed with an eligible primary colectomy procedure.
Is 44139 the same as the colectomy code?
No. The primary code describes the colon resection and related reconstruction or diversion; 44139 reports the additional splenic flexure mobilization.
Which code is used for laparoscopic splenic flexure mobilization?
Code 44213 describes laparoscopic mobilization of the splenic flexure as an add-on. Choose the code that matches the operative approach.
What documentation supports 44139?
The operative report should identify splenic flexure mobilization and describe the additional work performed to free the colon, alongside the eligible primary colectomy.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
5,34444135,,Intestine transplnt cadaver,R,,0.00,0.00,,0.00,,0.00,0.00,0.00,0,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
5,34544136,,Intestine transplant live,R,,0.00,0.00,,0.00,,0.00,0.00,0.00,0,XXX,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
5,34644137,,Remove intestinal allograft,C,,0.00,0.00,,0.00,,0.00,0.00,0.00,0,XXX,0.00,0.00,0.00,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
5,34744139,,Mobilization of colon,A,,2.17,0.54,NA,0.54,,0.49,3.20,3.20,0,ZZZ,0.00,0.00,0.00,0,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
5,34844140,,Partial removal of colon,A,,22.03,10.00,NA,10.00,,5.40,37.43,37.43,0,090,0.09,0.81,0.10,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
5,34944141,,Partial removal of colon,A,,29.16,14.31,NA,14.31,,7.16,50.63,50.63,0,090,0.09,0.81,0.10,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
5,35044143,,Partial removal of colon,A,,27.10,12.13,NA,12.13,,6.60,45.83,45.83,0,090,0.09,0.81,0.10,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00