43644 describes laparoscopic Roux-en-Y gastric bypass. Choose 43645 when the operation also reconstructs the small intestine to limit absorption.
On this page
CMS RVU26D · Effective 2026-10-01
43645 in Austin
Office / nonfacility
Not available in this setting
Base rate per service
Facility setting
$1713.71
Base rate per service
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.
Bariatric surgery
About 43645: Laparoscopic gastric bypass with intestinal reconstruction
Reports laparoscopic gastric bypass with small-intestine reconstruction intended to limit absorption, rather than a standard Roux-en-Y bypass alone.
A bariatric surgeon performs this laparoscopically to create a gastric bypass and reconstruct the small intestine in a way intended to limit nutrient absorption. It represents a more extensive intestinal reconstruction than a standard laparoscopic Roux-en-Y gastric bypass. The operation is typically performed in a hospital or other surgical facility for treatment of severe obesity; the operative report should identify the bypass and intestinal reconstruction performed.
Select this code when the documented laparoscopic operation includes both gastric bypass and the small-intestine reconstruction to limit absorption. A standard Roux-en-Y bypass without that reconstruction is reported with 43644. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others are subject to the standard 50% multiple-procedure reduction. Assistant-at-surgery services may be paid; co-surgeon payment requires supporting documentation, and team-surgery payment is not permitted.
CMS billing rules for 43645
- Global period
- Major surgery with a 90-day global period: the day-before preoperative visit and 90 days of related postoperative care are included.
- Multiple procedures
- Standard multiple procedure reduction: the highest-valued procedure is paid in full and others at 50% when performed in the same session.
- Bilateral procedures
- Bilateral adjustment does not apply; the descriptor or anatomy makes modifier 50 inappropriate.
- Assistant at surgery
- Assistant at surgery may be paid.
- Co-surgeons
- Co-surgeons paid only with supporting documentation.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU30.74 · 60%
- Practice expense (office) RVU12.59 · 24%
- Malpractice RVU8.11 · 16%
218
Medicare services in 2024 · #4253 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.
43645 compared with similar codes
Office rates for Austin, from the same CMS release.
Both describe gastric bypass with intestinal reconstruction to limit absorption, but 43847 is the open approach; 43645 is laparoscopic.
Unlisted laps px stomach
43659 is an unlisted laparoscopic stomach procedure. Use 43645 when the documented bypass and intestinal reconstruction match its defined service.
The same code, a different location
How does Austin compare?
43645 across payment areas
Same release and payment basis · bars start at $0
Austin · This locality
Unavailable
Unavailable
No comparable rate is available in this setting.
Unavailable
No comparable rate is available in this setting.
Unavailable
No comparable rate is available in this setting.
Unavailable
No comparable rate is available in this setting.
Unavailable
No comparable rate is available in this setting.
Unavailable
No comparable rate is available in this setting.
Other payment areas listed in Texas appear first, followed by selected cross-country examples. The chart compares amounts, not distance.
The code’s RVUs stay the same in these comparisons. Geographic adjustments to work, practice expense and malpractice change the dollar amount. A city name alone may not identify the payment area for a service address.
Compare all 108 other payment areas
Rest Of Texas
Texas · 43645
Office
Unavailable
Facility
$1670.42
No comparable office rate is available.
Los Angeles-Long Beach-Anaheim (Los Angeles/Orange Cnty)
California · 43645
Office
Unavailable
Facility
$1746.18
No comparable office rate is available.
Dc + Md/Va Suburbs
District of Columbia · 43645
Office
Unavailable
Facility
$1879.05
No comparable office rate is available.
Miami
Florida · 43645
Office
Unavailable
Facility
$2149.56
No comparable office rate is available.
Chicago
Illinois · 43645
Office
Unavailable
Facility
$2078.22
No comparable office rate is available.
Manhattan
New York · 43645
Office
Unavailable
Facility
$2010.71
No comparable office rate is available.
Alaska*
Alaska · 43645
Office
Unavailable
Facility
$2137.22
No comparable office rate is available.
Alabama
Alabama · 43645
Office
Unavailable
Facility
$1548.02
No comparable office rate is available.
Arkansas
Arkansas · 43645
Office
Unavailable
Facility
$1527.47
No comparable office rate is available.
Arizona
Arizona · 43645
Office
Unavailable
Facility
$1666.10
No comparable office rate is available.
Bakersfield
California · 43645
Office
Unavailable
Facility
$1672.11
No comparable office rate is available.
Chico
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
El Centro
California · 43645
Office
Unavailable
Facility
$1651.63
No comparable office rate is available.
Fresno
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
Hanford-Corcoran
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
Madera
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
Merced
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
Modesto
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
Napa
California · 43645
Office
Unavailable
Facility
$1783.28
No comparable office rate is available.
Oxnard-Thousand Oaks-Ventura
California · 43645
Office
Unavailable
Facility
$1721.30
No comparable office rate is available.
Redding
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
Rest Of California
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
Riverside-San Bernardino-Ontario
California · 43645
Office
Unavailable
Facility
$1737.17
No comparable office rate is available.
Sacramento-Roseville-Folsom
California · 43645
Office
Unavailable
Facility
$1697.96
No comparable office rate is available.
Salinas
California · 43645
Office
Unavailable
Facility
$1691.14
No comparable office rate is available.
San Diego-Chula Vista-Carlsbad
California · 43645
Office
Unavailable
Facility
$1707.30
No comparable office rate is available.
San Francisco-Oakland-Berkeley (Marin Cnty)
California · 43645
Office
Unavailable
Facility
$1841.55
No comparable office rate is available.
San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty)
California · 43645
Office
Unavailable
Facility
$1832.34
No comparable office rate is available.
San Jose-Sunnyvale-Santa Clara (San Benito Cnty)
California · 43645
Office
Unavailable
Facility
$1891.26
No comparable office rate is available.
San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty)
California · 43645
Office
Unavailable
Facility
$1853.61
No comparable office rate is available.
San Luis Obispo-Paso Robles
California · 43645
Office
Unavailable
Facility
$1668.36
No comparable office rate is available.
Santa Cruz-Watsonville
California · 43645
Office
Unavailable
Facility
$1704.43
No comparable office rate is available.
Santa Maria-Santa Barbara
California · 43645
Office
Unavailable
Facility
$1691.01
No comparable office rate is available.
Santa Rosa-Petaluma
California · 43645
Office
Unavailable
Facility
$1719.13
No comparable office rate is available.
Stockton
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
Vallejo
California · 43645
Office
Unavailable
Facility
$1770.00
No comparable office rate is available.
Visalia
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
Yuba City
California · 43645
Office
Unavailable
Facility
$1650.28
No comparable office rate is available.
Colorado
Colorado · 43645
Office
Unavailable
Facility
$1698.05
No comparable office rate is available.
Connecticut
Connecticut · 43645
Office
Unavailable
Facility
$1827.94
No comparable office rate is available.
Delaware
Delaware · 43645
Office
Unavailable
Facility
$1690.87
No comparable office rate is available.
Fort Lauderdale
Florida · 43645
Office
Unavailable
Facility
$1942.48
No comparable office rate is available.
Rest Of Florida
Florida · 43645
Office
Unavailable
Facility
$1835.89
No comparable office rate is available.
Atlanta
Georgia · 43645
Office
Unavailable
Facility
$1782.40
No comparable office rate is available.
Rest Of Georgia
Georgia · 43645
Office
Unavailable
Facility
$1724.74
No comparable office rate is available.
Hawaii, Guam
Hawaii · 43645
Office
Unavailable
Facility
$1661.71
No comparable office rate is available.
Iowa
Iowa · 43645
Office
Unavailable
Facility
$1519.06
No comparable office rate is available.
Idaho
Idaho · 43645
Office
Unavailable
Facility
$1541.75
No comparable office rate is available.
East St. Louis
Illinois · 43645
Office
Unavailable
Facility
$1959.17
No comparable office rate is available.
Rest Of Illinois
Illinois · 43645
Office
Unavailable
Facility
$1834.06
No comparable office rate is available.
Suburban Chicago
Illinois · 43645
Office
Unavailable
Facility
$1945.80
No comparable office rate is available.
Indiana
Indiana · 43645
Office
Unavailable
Facility
$1548.21
No comparable office rate is available.
Kansas
Kansas · 43645
Office
Unavailable
Facility
$1543.42
No comparable office rate is available.
Kentucky
Kentucky · 43645
Office
Unavailable
Facility
$1648.44
No comparable office rate is available.
New Orleans
Louisiana · 43645
Office
Unavailable
Facility
$1730.17
No comparable office rate is available.
Rest Of Louisiana
Louisiana · 43645
Office
Unavailable
Facility
$1658.41
No comparable office rate is available.
Metropolitan Boston
Massachusetts · 43645
Office
Unavailable
Facility
$1812.02
No comparable office rate is available.
Rest Of Massachusetts
Massachusetts · 43645
Office
Unavailable
Facility
$1701.87
No comparable office rate is available.
Baltimore/Surr. Cntys
Maryland · 43645
Office
Unavailable
Facility
$1829.47
No comparable office rate is available.
Rest Of Maryland
Maryland · 43645
Office
Unavailable
Facility
$1711.24
No comparable office rate is available.
Rest Of Maine
Maine · 43645
Office
Unavailable
Facility
$1582.11
No comparable office rate is available.
Southern Maine
Maine · 43645
Office
Unavailable
Facility
$1614.40
No comparable office rate is available.
Detroit
Michigan · 43645
Office
Unavailable
Facility
$1889.25
No comparable office rate is available.
Rest Of Michigan
Michigan · 43645
Office
Unavailable
Facility
$1716.50
No comparable office rate is available.
Minnesota
Minnesota · 43645
Office
Unavailable
Facility
$1539.64
No comparable office rate is available.
Metropolitan Kansas City
Missouri · 43645
Office
Unavailable
Facility
$1686.26
No comparable office rate is available.
Metropolitan St. Louis
Missouri · 43645
Office
Unavailable
Facility
$1698.50
No comparable office rate is available.
Rest Of Missouri
Missouri · 43645
Office
Unavailable
Facility
$1653.07
No comparable office rate is available.
Mississippi
Mississippi · 43645
Office
Unavailable
Facility
$1588.99
No comparable office rate is available.
Montana**
Montana · 43645
Office
Unavailable
Facility
$1717.60
No comparable office rate is available.
North Carolina
North Carolina · 43645
Office
Unavailable
Facility
$1592.18
No comparable office rate is available.
North Dakota**
North Dakota · 43645
Office
Unavailable
Facility
$1557.24
No comparable office rate is available.
Nebraska
Nebraska · 43645
Office
Unavailable
Facility
$1517.27
No comparable office rate is available.
New Hampshire
New Hampshire · 43645
Office
Unavailable
Facility
$1701.52
No comparable office rate is available.
Northern Nj
New Jersey · 43645
Office
Unavailable
Facility
$1868.53
No comparable office rate is available.
Rest Of New Jersey
New Jersey · 43645
Office
Unavailable
Facility
$1824.18
No comparable office rate is available.
New Mexico
New Mexico · 43645
Office
Unavailable
Facility
$1737.69
No comparable office rate is available.
Nevada**
Nevada · 43645
Office
Unavailable
Facility
$1673.33
No comparable office rate is available.
Nyc Suburbs/Long Island
New York · 43645
Office
Unavailable
Facility
$2095.48
No comparable office rate is available.
Poughkpsie/N Nyc Suburbs
New York · 43645
Office
Unavailable
Facility
$1861.18
No comparable office rate is available.
Queens
New York · 43645
Office
Unavailable
Facility
$1980.12
No comparable office rate is available.
Rest Of New York
New York · 43645
Office
Unavailable
Facility
$1616.66
No comparable office rate is available.
Ohio
Ohio · 43645
Office
Unavailable
Facility
$1683.72
No comparable office rate is available.
Oklahoma
Oklahoma · 43645
Office
Unavailable
Facility
$1612.74
No comparable office rate is available.
Portland
Oregon · 43645
Office
Unavailable
Facility
$1711.90
No comparable office rate is available.
Rest Of Oregon
Oregon · 43645
Office
Unavailable
Facility
$1636.01
No comparable office rate is available.
Metropolitan Philadelphia
Pennsylvania · 43645
Office
Unavailable
Facility
$1806.14
No comparable office rate is available.
Rest Of Pennsylvania
Pennsylvania · 43645
Office
Unavailable
Facility
$1668.76
No comparable office rate is available.
Puerto Rico
Puerto Rico · 43645
Office
Unavailable
Facility
$1718.70
No comparable office rate is available.
Rhode Island
Rhode Island · 43645
Office
Unavailable
Facility
$1722.27
No comparable office rate is available.
South Carolina
South Carolina · 43645
Office
Unavailable
Facility
$1645.55
No comparable office rate is available.
South Dakota**
South Dakota · 43645
Office
Unavailable
Facility
$1538.28
No comparable office rate is available.
Tennessee
Tennessee · 43645
Office
Unavailable
Facility
$1554.46
No comparable office rate is available.
Utah
Utah · 43645
Office
Unavailable
Facility
$1665.28
No comparable office rate is available.
Virginia
Virginia · 43645
Office
Unavailable
Facility
$1631.35
No comparable office rate is available.
Virgin Islands
United States Virgin Islands · 43645
Office
Unavailable
Facility
$1718.70
No comparable office rate is available.
Vermont
Vermont · 43645
Office
Unavailable
Facility
$1580.12
No comparable office rate is available.
Rest Of Washington
Washington · 43645
Office
Unavailable
Facility
$1689.04
No comparable office rate is available.
Seattle (King Cnty)
Washington · 43645
Office
Unavailable
Facility
$1815.37
No comparable office rate is available.
Wisconsin
Wisconsin · 43645
Office
Unavailable
Facility
$1513.03
No comparable office rate is available.
West Virginia
West Virginia · 43645
Office
Unavailable
Facility
$1779.80
No comparable office rate is available.
Wyoming**
Wyoming · 43645
Office
Unavailable
Facility
$1647.71
No comparable office rate is available.
See how rates vary across the country
43645 · Office / nonfacility · Non-QP. Choose a state to explore its payment localities. A range means the amount varies within that state.
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 all state and territory rates as a table
| State / territory | Rate range | Localities |
|---|---|---|
| AK | No published base rate | 1 |
| AL | No published base rate | 1 |
| AR | No published base rate | 1 |
| AZ | No published base rate | 1 |
| CA | No published base rate | 29 |
| CO | No published base rate | 1 |
| CT | No published base rate | 1 |
| DC | No published base rate | 1 |
| DE | No published base rate | 1 |
| FL | No published base rate | 3 |
| GA | No published base rate | 2 |
| GU | No published base rate | 1 |
| HI | No published base rate | 1 |
| IA | No published base rate | 1 |
| ID | No published base rate | 1 |
| IL | No published base rate | 4 |
| IN | No published base rate | 1 |
| KS | No published base rate | 1 |
| KY | No published base rate | 1 |
| LA | No published base rate | 2 |
| MA | No published base rate | 2 |
| MD | No published base rate | 3 |
| ME | No published base rate | 2 |
| MI | No published base rate | 2 |
| MN | No published base rate | 1 |
| MO | No published base rate | 3 |
| MS | No published base rate | 1 |
| MT | No published base rate | 1 |
| NC | No published base rate | 1 |
| ND | No published base rate | 1 |
| NE | No published base rate | 1 |
| NH | No published base rate | 1 |
| NJ | No published base rate | 2 |
| NM | No published base rate | 1 |
| NV | No published base rate | 1 |
| NY | No published base rate | 5 |
| OH | No published base rate | 1 |
| OK | No published base rate | 1 |
| OR | No published base rate | 2 |
| PA | No published base rate | 2 |
| PR | No published base rate | 1 |
| RI | No published base rate | 1 |
| SC | No published base rate | 1 |
| SD | No published base rate | 1 |
| TN | No published base rate | 1 |
| TX | No published base rate | 8 |
| UT | No published base rate | 1 |
| VA | No published base rate | 2 |
| VI | No published base rate | 1 |
| VT | No published base rate | 1 |
| WA | No published base rate | 2 |
| WI | No published base rate | 1 |
| WV | No published base rate | 1 |
| WY | No published base rate | 1 |
Where does this rate apply?
Austin is a Medicare payment area. Our Census mapping connects it to 31 cities and communities in Texas, including the examples shown here.
Some communities span more than one payment area. Follow a city link to compare all of its mapped areas, or check the service-location ZIP above for an address-level starting point.
- 43645 in Austin
Multiple payment areas
- 43645 in Barton Creek
- 43645 in Bee Cave
- 43645 in Briarcliff
- 43645 in Cedar Park
Multiple payment areas
- 43645 in Creedmoor
Multiple payment areas
- 43645 in Elgin
Multiple payment areas
- 43645 in Garfield
Use this rate
What is a percentage of Medicare worth?
Turn a percentage into dollars for 43645 in Austin. This uses the base rate on this page, so the locality and release stay consistent.
Reference amount per service
$1885.08
$1713.71 × 110% = $1885.08
A contract may specify another Medicare year or additional adjustments. This is percentage arithmetic on the displayed base rate, not a claim adjudication.
Working with a whole code list?
Compare an offer across your annual code mix, including an older Medicare schedule or flat per-code rates.
How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 43645 in Austin.
PPRRVU2026_Oct_nonQPP.csv
5,276
- Code
- 43645
- Physician work
- 30.74
- Practice expense
- 12.59
- Malpractice
- 8.11
GPCI2026.csv
96
- Locality
- Austin
- Physician work
- 1.002
- Practice expense
- 1.058
- Malpractice
- 0.886
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 30.74 | × 1.002 | 30.8015 |
| Practice expense | 12.59 | × 1.058 | 13.3202 |
| Malpractice | 8.11 | × 0.886 | 7.1855 |
| Total RVUs | 51.3072 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Austin$1713.71
Open 43645 in the RVU calculator →
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 30.74 | 1.002 |
| Practice expense | 12.59 | 1.058 |
| Malpractice | 8.11 | 0.886 |
(30.74 × 1.002 + 12.59 × 1.058 + 8.11 × 0.886) × $33.4009 = $1713.71
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
How this rate has changed
43645 · Office / nonfacility
Rate unavailable
Effective 2026-10-01
A rate is unavailable in one of these releases, so a change cannot be calculated.
One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.
What changed, release by release
Explore release dates and calculate this code in an earlier period →
Each row uses the accepted CMS release effective on that date and the same contractor and locality identifiers. Missing rates stay visible. Historical boundaries may differ; verify the service address for an older claim.
Inspect every release and its CMS source
| Effective from | Office / nonfacility | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | Not available in this setting | $1713.71 | RVU26D |
| 2026-07-01 | Not available in this setting | $1713.71 | RVU26C |
| 2026-04-01 | Not available in this setting | $1713.71 | RVU26B |
| 2026-01-01 | Not available in this setting | $1713.71 | RVU26A |
| 2025-10-01 | Not available in this setting | $1807.31 | RVU25D |
| 2025-07-01 | Not available in this setting | $1807.31 | RVU25C |
| 2025-04-01 | Not available in this setting | $1807.31 | RVU25B |
| 2025-01-01 | Not available in this setting | $1807.31 | RVU25A |
43645 billing questions
How is 43645 distinguished from 43644?
Use 43645 when the laparoscopic gastric bypass includes small-intestine reconstruction intended to limit absorption. Code 43644 describes the laparoscopic Roux-en-Y bypass.
What operative documentation supports 43645?
The operative report should describe the laparoscopic approach, gastric bypass, and the small-intestine reconstruction that limits absorption. A statement that bariatric bypass was performed alone does not establish those details.
How does the 90-day global period affect postoperative billing?
The global period includes the day-before preoperative visit and 90 days of related postoperative care. Those included services are part of the surgical global package.
How are other procedures in the same session paid?
Under the standard multiple-procedure reduction, the highest-valued procedure is paid in full and other procedures are subject to a 50% reduction.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery services may be paid. 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 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.
