No office rate
This code identifies a bypass from the aorta to both iliac arteries. Distinguish the aortoiliac code by the documented target configuration rather than assuming bilateral iliac targets.
On this page
CMS RVU26D · Effective 2026-10-01
35638 in Modesto
Office / nonfacility
Not available in this setting
Base rate per service
Facility setting
$1491.68
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.
Vascular surgery
About 35638: Aortobi-iliac prosthetic bypass
Reports open bypass from the aorta to both iliac arteries using a non-vein graft, typically to restore blood flow in aortoiliac disease.
A vascular surgeon performs an open bypass from the aorta to both iliac arteries using a graft other than vein, commonly a synthetic conduit. The operation may be performed for aortoiliac occlusive disease when reconstruction is needed to restore blood flow to both lower extremities. The key distinction is that the graft runs from the aorta to bilateral iliac artery targets, rather than to the femoral arteries.
Select this code when the operative report supports the aortic origin, both iliac outflow targets, and use of a non-vein graft. 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 others are subject to the standard 50% reduction. Modifier 50 is inappropriate for this bilateral configuration. Assistant-at-surgery payment may be made; co-surgeon payment requires supporting documentation, and team surgery is not permitted.
CMS billing rules for 35638
- 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 RVU32.76 · 69%
- Practice expense (office) RVU6.30 · 13%
- Malpractice RVU8.28 · 17%
127
Medicare services in 2024 · #4688 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.
35638 compared with similar codes
Office rates for Modesto, from the same CMS release.
No office rate
Both codes describe aortic bypasses, but this code has iliac artery targets; 35646 has bilateral femoral artery targets.
No office rate
This code has bilateral iliac targets. 35647 is the aortofemoral alternative when the operative report identifies a femoral artery target.
The same code, a different location
How does Modesto compare?
35638 across payment areas
Same release and payment basis · bars start at $0
Modesto · 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.
No comparable rate is available in this setting.
Other payment areas listed in California 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
Madera
California · 35638
Office
Unavailable
Facility
$1491.68
No comparable office rate is available.
Merced
California · 35638
Office
Unavailable
Facility
$1491.68
No comparable office rate is available.
Napa
California · 35638
Office
Unavailable
Facility
$1580.98
No comparable office rate is available.
Oxnard-Thousand Oaks-Ventura
California · 35638
Office
Unavailable
Facility
$1545.87
No comparable office rate is available.
Redding
California · 35638
Office
Unavailable
Facility
$1491.68
No comparable office rate is available.
Rest Of California
California · 35638
Office
Unavailable
Facility
$1491.68
No comparable office rate is available.
Riverside-San Bernardino-Ontario
California · 35638
Office
Unavailable
Facility
$1580.44
No comparable office rate is available.
Sacramento-Roseville-Folsom
California · 35638
Office
Unavailable
Facility
$1526.57
No comparable office rate is available.
Salinas
California · 35638
Office
Unavailable
Facility
$1520.25
No comparable office rate is available.
San Diego-Chula Vista-Carlsbad
California · 35638
Office
Unavailable
Facility
$1528.60
No comparable office rate is available.
San Francisco-Oakland-Berkeley (Marin Cnty)
California · 35638
Office
Unavailable
Facility
$1621.80
No comparable office rate is available.
San Francisco-Oakland-Berkeley (San Francisco/San Mateo/Alameda/Contra Costa Cnty)
California · 35638
Office
Unavailable
Facility
$1612.40
No comparable office rate is available.
San Jose-Sunnyvale-Santa Clara (San Benito Cnty)
California · 35638
Office
Unavailable
Facility
$1666.25
No comparable office rate is available.
San Jose-Sunnyvale-Santa Clara (Santa Clara Cnty)
California · 35638
Office
Unavailable
Facility
$1627.80
No comparable office rate is available.
San Luis Obispo-Paso Robles
California · 35638
Office
Unavailable
Facility
$1500.73
No comparable office rate is available.
Santa Cruz-Watsonville
California · 35638
Office
Unavailable
Facility
$1521.10
No comparable office rate is available.
Santa Maria-Santa Barbara
California · 35638
Office
Unavailable
Facility
$1518.44
No comparable office rate is available.
Santa Rosa-Petaluma
California · 35638
Office
Unavailable
Facility
$1533.68
No comparable office rate is available.
Stockton
California · 35638
Office
Unavailable
Facility
$1491.68
No comparable office rate is available.
Vallejo
California · 35638
Office
Unavailable
Facility
$1567.43
No comparable office rate is available.
Visalia
California · 35638
Office
Unavailable
Facility
$1491.68
No comparable office rate is available.
Yuba City
California · 35638
Office
Unavailable
Facility
$1491.68
No comparable office rate is available.
Dc + Md/Va Suburbs
District of Columbia · 35638
Office
Unavailable
Facility
$1708.99
No comparable office rate is available.
Miami
Florida · 35638
Office
Unavailable
Facility
$2012.69
No comparable office rate is available.
Chicago
Illinois · 35638
Office
Unavailable
Facility
$1948.05
No comparable office rate is available.
Manhattan
New York · 35638
Office
Unavailable
Facility
$1847.38
No comparable office rate is available.
Alaska*
Alaska · 35638
Office
Unavailable
Facility
$2017.81
No comparable office rate is available.
Alabama
Alabama · 35638
Office
Unavailable
Facility
$1434.87
No comparable office rate is available.
Arkansas
Arkansas · 35638
Office
Unavailable
Facility
$1417.40
No comparable office rate is available.
Arizona
Arizona · 35638
Office
Unavailable
Facility
$1534.85
No comparable office rate is available.
Colorado
Colorado · 35638
Office
Unavailable
Facility
$1547.23
No comparable office rate is available.
Connecticut
Connecticut · 35638
Office
Unavailable
Facility
$1677.36
No comparable office rate is available.
Delaware
Delaware · 35638
Office
Unavailable
Facility
$1556.21
No comparable office rate is available.
Fort Lauderdale
Florida · 35638
Office
Unavailable
Facility
$1807.39
No comparable office rate is available.
Rest Of Florida
Florida · 35638
Office
Unavailable
Facility
$1711.05
No comparable office rate is available.
Atlanta
Georgia · 35638
Office
Unavailable
Facility
$1643.44
No comparable office rate is available.
Rest Of Georgia
Georgia · 35638
Office
Unavailable
Facility
$1611.57
No comparable office rate is available.
Hawaii, Guam
Hawaii · 35638
Office
Unavailable
Facility
$1493.60
No comparable office rate is available.
Iowa
Iowa · 35638
Office
Unavailable
Facility
$1396.55
No comparable office rate is available.
Idaho
Idaho · 35638
Office
Unavailable
Facility
$1418.62
No comparable office rate is available.
East St. Louis
Illinois · 35638
Office
Unavailable
Facility
$1844.80
No comparable office rate is available.
Rest Of Illinois
Illinois · 35638
Office
Unavailable
Facility
$1718.59
No comparable office rate is available.
Suburban Chicago
Illinois · 35638
Office
Unavailable
Facility
$1808.04
No comparable office rate is available.
Indiana
Indiana · 35638
Office
Unavailable
Facility
$1423.69
No comparable office rate is available.
Kansas
Kansas · 35638
Office
Unavailable
Facility
$1423.82
No comparable office rate is available.
Kentucky
Kentucky · 35638
Office
Unavailable
Facility
$1534.33
No comparable office rate is available.
New Orleans
Louisiana · 35638
Office
Unavailable
Facility
$1606.40
No comparable office rate is available.
Rest Of Louisiana
Louisiana · 35638
Office
Unavailable
Facility
$1545.38
No comparable office rate is available.
Metropolitan Boston
Massachusetts · 35638
Office
Unavailable
Facility
$1636.46
No comparable office rate is available.
Rest Of Massachusetts
Massachusetts · 35638
Office
Unavailable
Facility
$1553.72
No comparable office rate is available.
Baltimore/Surr. Cntys
Maryland · 35638
Office
Unavailable
Facility
$1679.61
No comparable office rate is available.
Rest Of Maryland
Maryland · 35638
Office
Unavailable
Facility
$1571.99
No comparable office rate is available.
Rest Of Maine
Maine · 35638
Office
Unavailable
Facility
$1459.83
No comparable office rate is available.
Southern Maine
Maine · 35638
Office
Unavailable
Facility
$1477.25
No comparable office rate is available.
Detroit
Michigan · 35638
Office
Unavailable
Facility
$1763.55
No comparable office rate is available.
Rest Of Michigan
Michigan · 35638
Office
Unavailable
Facility
$1598.57
No comparable office rate is available.
Minnesota
Minnesota · 35638
Office
Unavailable
Facility
$1392.60
No comparable office rate is available.
Metropolitan Kansas City
Missouri · 35638
Office
Unavailable
Facility
$1562.00
No comparable office rate is available.
Metropolitan St. Louis
Missouri · 35638
Office
Unavailable
Facility
$1571.65
No comparable office rate is available.
Rest Of Missouri
Missouri · 35638
Office
Unavailable
Facility
$1544.97
No comparable office rate is available.
Mississippi
Mississippi · 35638
Office
Unavailable
Facility
$1479.77
No comparable office rate is available.
Montana**
Montana · 35638
Office
Unavailable
Facility
$1580.65
No comparable office rate is available.
North Carolina
North Carolina · 35638
Office
Unavailable
Facility
$1467.26
No comparable office rate is available.
North Dakota**
North Dakota · 35638
Office
Unavailable
Facility
$1416.92
No comparable office rate is available.
Nebraska
Nebraska · 35638
Office
Unavailable
Facility
$1392.98
No comparable office rate is available.
New Hampshire
New Hampshire · 35638
Office
Unavailable
Facility
$1555.26
No comparable office rate is available.
Northern Nj
New Jersey · 35638
Office
Unavailable
Facility
$1702.61
No comparable office rate is available.
Rest Of New Jersey
New Jersey · 35638
Office
Unavailable
Facility
$1671.15
No comparable office rate is available.
New Mexico
New Mexico · 35638
Office
Unavailable
Facility
$1619.32
No comparable office rate is available.
Nevada**
Nevada · 35638
Office
Unavailable
Facility
$1535.22
No comparable office rate is available.
Nyc Suburbs/Long Island
New York · 35638
Office
Unavailable
Facility
$1928.01
No comparable office rate is available.
Poughkpsie/N Nyc Suburbs
New York · 35638
Office
Unavailable
Facility
$1708.51
No comparable office rate is available.
Queens
New York · 35638
Office
Unavailable
Facility
$1811.77
No comparable office rate is available.
Rest Of New York
New York · 35638
Office
Unavailable
Facility
$1488.54
No comparable office rate is available.
Ohio
Ohio · 35638
Office
Unavailable
Facility
$1565.10
No comparable office rate is available.
Oklahoma
Oklahoma · 35638
Office
Unavailable
Facility
$1497.01
No comparable office rate is available.
Portland
Oregon · 35638
Office
Unavailable
Facility
$1551.26
No comparable office rate is available.
Rest Of Oregon
Oregon · 35638
Office
Unavailable
Facility
$1498.22
No comparable office rate is available.
Metropolitan Philadelphia
Pennsylvania · 35638
Office
Unavailable
Facility
$1662.90
No comparable office rate is available.
Rest Of Pennsylvania
Pennsylvania · 35638
Office
Unavailable
Facility
$1548.73
No comparable office rate is available.
Puerto Rico
Puerto Rico · 35638
Office
Unavailable
Facility
$1579.36
No comparable office rate is available.
Rhode Island
Rhode Island · 35638
Office
Unavailable
Facility
$1579.06
No comparable office rate is available.
South Carolina
South Carolina · 35638
Office
Unavailable
Facility
$1523.72
No comparable office rate is available.
South Dakota**
South Dakota · 35638
Office
Unavailable
Facility
$1397.56
No comparable office rate is available.
Tennessee
Tennessee · 35638
Office
Unavailable
Facility
$1434.00
No comparable office rate is available.
Austin
Texas · 35638
Office
Unavailable
Facility
$1564.06
No comparable office rate is available.
Beaumont
Texas · 35638
Office
Unavailable
Facility
$1542.62
No comparable office rate is available.
Brazoria
Texas · 35638
Office
Unavailable
Facility
$1527.22
No comparable office rate is available.
Dallas
Texas · 35638
Office
Unavailable
Facility
$1550.93
No comparable office rate is available.
Fort Worth
Texas · 35638
Office
Unavailable
Facility
$1552.42
No comparable office rate is available.
Galveston
Texas · 35638
Office
Unavailable
Facility
$1540.91
No comparable office rate is available.
Houston
Texas · 35638
Office
Unavailable
Facility
$1692.47
No comparable office rate is available.
Rest Of Texas
Texas · 35638
Office
Unavailable
Facility
$1543.64
No comparable office rate is available.
Utah
Utah · 35638
Office
Unavailable
Facility
$1540.36
No comparable office rate is available.
Virginia
Virginia · 35638
Office
Unavailable
Facility
$1496.31
No comparable office rate is available.
Virgin Islands
United States Virgin Islands · 35638
Office
Unavailable
Facility
$1579.36
No comparable office rate is available.
Vermont
Vermont · 35638
Office
Unavailable
Facility
$1442.47
No comparable office rate is available.
Rest Of Washington
Washington · 35638
Office
Unavailable
Facility
$1540.48
No comparable office rate is available.
Seattle (King Cnty)
Washington · 35638
Office
Unavailable
Facility
$1633.07
No comparable office rate is available.
Wisconsin
Wisconsin · 35638
Office
Unavailable
Facility
$1380.98
No comparable office rate is available.
West Virginia
West Virginia · 35638
Office
Unavailable
Facility
$1672.83
No comparable office rate is available.
Wyoming**
Wyoming · 35638
Office
Unavailable
Facility
$1509.29
No comparable office rate is available.
See how rates vary across the country
35638 · 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?
Modesto is a Medicare payment area. Our Census mapping connects it to 33 cities and communities in California, 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.
Use this rate
What is a percentage of Medicare worth?
Turn a percentage into dollars for 35638 in Modesto. This uses the base rate on this page, so the locality and release stay consistent.
Reference amount per service
$1640.85
$1491.68 × 110% = $1640.85
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 35638 in Modesto.
PPRRVU2026_Oct_nonQPP.csv
4,385
- Code
- 35638
- Physician work
- 32.76
- Practice expense
- 6.30
- Malpractice
- 8.28
GPCI2026.csv
16
- Locality
- Modesto
- Physician work
- 1.017
- Practice expense
- 1.096
- Malpractice
- 0.536
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 32.76 | × 1.017 | 33.3169 |
| Practice expense | 6.30 | × 1.096 | 6.9048 |
| Malpractice | 8.28 | × 0.536 | 4.4381 |
| Total RVUs | 44.6598 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Modesto$1491.68
Open 35638 in the RVU calculator →
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 32.76 | 1.017 |
| Practice expense | 6.3 | 1.096 |
| Malpractice | 8.28 | 0.536 |
(32.76 × 1.017 + 6.3 × 1.096 + 8.28 × 0.536) × $33.4009 = $1491.68
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
35638 · 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 | $1491.68 | RVU26D |
| 2026-07-01 | Not available in this setting | $1491.68 | RVU26C |
| 2026-04-01 | Not available in this setting | $1491.68 | RVU26B |
| 2026-01-01 | Not available in this setting | $1491.68 | RVU26A |
| 2025-10-01 | Not available in this setting | $1581.37 | RVU25D |
| 2025-07-01 | Not available in this setting | $1581.37 | RVU25C |
| 2025-04-01 | Not available in this setting | $1581.37 | RVU25B |
| 2025-01-01 | Not available in this setting | $1581.37 | RVU25A |
35638 billing questions
How does this differ from an aortobifemoral bypass?
This code describes aortic inflow with both iliac arteries as the distal targets. An aortobifemoral bypass has femoral artery targets instead.
When should the single aortoiliac bypass code be considered instead?
Use the bilateral-target code when the graft runs from the aorta to both iliac arteries. Aortoiliac bypass is the neighboring choice for a different, non-bilateral iliac configuration.
Should modifier 50 be appended for the two iliac targets?
No. CMS identifies bilateral adjustment as inappropriate for this code; the bilateral iliac configuration is represented by the service itself.
What operative documentation supports this code?
Document the aortic origin, both iliac artery targets, and that the conduit is not vein. The report should make clear that the distal targets are iliac arteries rather than femoral arteries.
How are other procedures in the same session handled?
CMS applies the standard multiple-procedure reduction: the highest-valued procedure is paid in full and other procedures are reduced when performed in the same session. Assistant-at-surgery payment may be made; co-surgeon payment requires supporting documentation.
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.
4,38235634,,Bpg iliorenal,A,,34.45,4.82,NA,4.82,,8.81,48.08,48.08,0,090,0.09,0.84,0.07,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,38335636,,Bpg splenorenal,A,,30.96,4.53,NA,4.53,,7.92,43.41,43.41,0,090,0.09,0.84,0.07,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,38435637,,Bpg aortoiliac,A,,32.22,4.67,NA,4.67,,8.25,45.14,45.14,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,38535638,,Bpg aortobi-iliac,A,,32.76,6.30,NA,6.30,,8.28,47.34,47.34,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,38635642,,Bpg carotid-vertebral,A,,18.47,3.90,NA,3.90,,4.72,27.09,27.09,0,090,0.09,0.84,0.07,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,38735645,,Bpg subclavian-vertebral,A,,17.97,3.31,NA,3.31,,4.60,25.88,25.88,0,090,0.09,0.84,0.07,2,1,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,38835646,,Bpg aortobifemoral,A,,32.16,5.87,NA,5.87,,8.17,46.20,46.20,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
1301182,CA,18,LOS ANGELES-LONG BEACH-ANAHEIM (LOS ANGELES/ORANGE CNTY),1.041,1.183,0.664
1401112,CA,58,MADERA,1.017,1.096,0.536
1501112,CA,59,MERCED,1.017,1.096,0.536
1601112,CA,60,MODESTO,1.017,1.096,0.536
1701112,CA,51,NAPA,1.063,1.318,0.508
1801182,CA,17,OXNARD-THOUSAND OAKS-VENTURA,1.028,1.182,0.623
1901112,CA,61,REDDING,1.017,1.096,0.536