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CPT code 44139: Colon mobilization, splenic flexure, add-on2026 Medicare rate & RVUs

Reports additional mobilization of the splenic flexure during an eligible colectomy when the colon must be freed to provide adequate length for reconstruction.

CMS RVU26DEffective Oct 1, 2026109 payment localities7K Medicare services in 2024

Medicare pays $106.88 for 44139 nationally in a facility.

Medicare rate · 44139

Colon mobilization, splenic flexure, add-on

Office or facility?

Work RVUs
2.17
Total RVUs
3.20
Global days
ZZZ

National rate · 2026

$106.88

Facility setting, before claim adjustments.

See every locality for 44139 →Billed by an NP, PA or therapist? →

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

Your location

Medicare pays by the payment locality where the service is performed.

On this page 10 sections
  1. Medicare rate
  2. What 44139 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What 44139 covers

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.

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 44139 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

44139 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$97.53
AlaskaUnavailable$136.95
ArizonaUnavailable$103.97
ArkansasUnavailable$96.40
Atlanta, GAUnavailable$110.68
Austin, TXUnavailable$106.21
Bakersfield, CAUnavailable$103.59
Baltimore area, MDUnavailable$113.24
Beaumont, TXUnavailable$104.10
Brazoria, TXUnavailable$103.70

44139 rates by state

Office rate range in each state. Select a state to see its payment localities.

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Explore a state

Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
44139 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

How the 44139 rate is calculated

Each of 44139’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 · 44139

RVUs × geographic indexes × conversion factor

Office or facility?

Work2.17

2.17 RVUs× 1.000 GPCI

Practice expense0.54

0.54 RVUs× 1.000 GPCI

Malpractice0.49

0.49 RVUs× 1.000 GPCI

Adjusted RVUs

3.2000

Conversion factor

$33.4009

Medicare rate

$106.88

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

Payment rules and modifiers for 44139

The CMS indicators that decide how 44139 is paid alongside other services.

CMS payment indicators · 44139

Colon mobilization, splenic flexure, add-on

RuleCMS valueWhat it means
Global periodZZZAdd-on code: falls within the primary procedure’s global period.
Multiple procedures0No multiple-procedure reduction.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)2Paid.
Co-surgeons (62)1Permitted with supporting documentation.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.

What modifiers do to the payment

Modifier 80 · payment effect

With and without the modifier

44139 without 80 · national facility

$106.88

Colon mobilization, splenic flexure, add-on

44139-80 · Assistant: 16%

$17.10

A physician assistant at surgery is paid 16% of the surgeon’s fee schedule amount.

When to use modifier 80

44139 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • 44139

    Colon mobilization, splenic flexure, add-on2.17 wRVU

    Not priced

  • 44140

    Partial colectomy, with anastomosis22.03 wRVU

    Not priced

  • 44145

    Partial colectomy, low pelvic anastomosis27.87 wRVU

    Not priced

  • 44213

    Splenic flexure, laparoscopic add-on mobilization3.41 wRVU

    Not priced

How to choose

44140Partial colectomyWith anastomosis
44140 reports the open partial colectomy. Add 44139 only when the surgeon also performs separately documented splenic flexure mobilization.
44145Partial colectomyLow pelvic anastomosis
44145 identifies an open partial colectomy with coloproctostomy; it does not by itself report additional splenic flexure mobilization.
44213Splenic flexureLaparoscopic add-on mobilization
44213 is the laparoscopic splenic flexure mobilization add-on. Use 44139 for the open approach and 44213 for the laparoscopic approach.

Codes related to 44139

Related codes aren’t interchangeable: bill the code that matches the service performed.

Codes related to 44139
CodeHow it relatesNational office range
Add-on codes
44140Partial colectomy, with anastomosisOpen partial colectomy that may be the primary procedure for this add-on.No office rate
44145Partial colectomy, low pelvic anastomosisOpen partial colectomy with coloproctostomy; splenic flexure mobilization may be reported as an add-on.No office rate
44150Total colectomy, rectum retained; ileostomy or ileoproctostomyOpen total colectomy that may be reported with this add-on.No office rate
Used instead
44213Splenic flexure, laparoscopic add-on mobilizationLaparoscopic splenic flexure mobilization add-on for the laparoscopic approach.No office rate

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 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
RVUs for 44139PPRRVU2026_Oct_nonQPP.csv, line 5,347 (RVU26D)

Open CMS sourceHow we calculate rates

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