CPT code 35515: Arterial bypass, subclavian to vertebral2026 Medicare rate & RVUs in Idaho

Reports an open bypass routing blood from the subclavian artery to a vertebral artery to address compromised vertebral circulation.

CMS RVU26DEffective Oct 1, 2026One payment locality

In Idaho, Medicare pays $1,085.31 for 35515 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$1,085.31Hospital or facility

Check a contract rate as a % of Medicare · 35515 nationwide

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

We’ll open 35515 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Idaho
  2. What 35515 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What 35515 covers

Code 35515 represents an open bypass that routes arterial blood from the subclavian artery to a vertebral artery, creating an alternate pathway around an obstructed or inadequate segment. Vascular surgeons perform it in the operating room for selected patients with compromised vertebral circulation, including cases associated with subclavian steal physiology. The defining feature is the named inflow and outflow vessels, not simply treatment of arm ischemia or any operation near the neck.

Report this code when operative documentation supports the subclavian-to-vertebral bypass; distinguish it from bypasses whose outflow is the carotid, axillary, or another vessel. Document laterality, anastomotic endpoints, indication, and the bypass performed. The 90-day global includes the day-before preoperative visit and related postoperative care through day 90. When multiple procedures are performed in one session, the highest-valued procedure is paid in full and the others at 50%. For bilateral work, modifier 50 is paid at 150%. An assistant at surgery may be paid; co-surgeons are paid only with 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.

How Idaho compares for 35515

Across 109 of 109 payment localities, the facility rate for 35515 runs from $1,055.04 in Wisconsin to $1,548.49 in Miami, FL. Idaho pays $1,085.31. The RVUs are the same everywhere; the geographic indexes change the dollars.

35515 in Idaho vs other payment areas
  1. Idaho · this page$1,085.31
  2. Los Angeles, CA · California$1,199.59+$114.28
  3. Washington, DC area · District of Columbia$1,307.24+$221.93
  4. Miami, FL · Florida$1,548.49+$463.18
  5. Chicago, IL · Illinois$1,498.51+$413.20
  6. Manhattan, NY · New York$1,415.96+$330.65
  7. Alaska · Alaska$1,548.05+$462.74

Other areas in Idaho first, then benchmark localities. Bars start at $0.

Every other payment area

35515 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama—$1,098.96
ArkansasArkansas—$1,085.59
ArizonaArizona—$1,175.42
Bakersfield, CACalifornia—$1,156.39
Chico, CACalifornia—$1,138.86
El Centro, CACalifornia—$1,139.95
Fresno, CACalifornia—$1,138.86
Hanford, CACalifornia—$1,138.86

35515 rates by state

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

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
35515 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

See 35515 in every payment locality

How the 35515 rate is calculated

Each of 35515’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 · 35515

RVUs × geographic indexes × conversion factor

Office or facility?

Work25.44

25.44 RVUs× 1.000 GPCI

Practice expense4.33

4.33 RVUs× 1.000 GPCI

Malpractice6.49

6.49 RVUs× 1.000 GPCI

Adjusted RVUs

36.2600

Conversion factor

$33.4009

Medicare rate

$1,211.12

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

The exact Idaho inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

4,339

Code
35515
Physician work
25.44
Practice expense
4.33
Malpractice
6.49

GPCI2026.csv

47

Locality
Idaho
Physician work
1.000
Practice expense
0.920
Malpractice
0.473
Facility calculation for 35515 in Idaho
ComponentRVULocality factorAdjusted
Physician work25.44× 1.00025.4400
Practice expense4.33× 0.9203.9836
Malpractice6.49× 0.4733.0698
Total RVUs32.4934
Conversion factor× 33.4009

Facility rate, Idaho$1085.31

Facility: (25.44 × 1 + 4.33 × 0.92 + 6.49 × 0.473) × $33.4009 = $1085.31

Open 35515 in the RVU calculator

Payment rules and modifiers for 35515

35515 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 35515

Arterial bypass, subclavian to vertebral

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
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.
Split (54/55/56)0.09/0.84/0.07Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 35515

Arterial bypass, subclavian to vertebral

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.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 50 · payment effect

With and without the modifier

35515 without 50 · national facility

$1,211.12

Arterial bypass, subclavian to vertebral

35515-50 · Bilateral: 150%

$1,816.68

Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).

When to use modifier 50

How 35515 has changed in Idaho

35515 · Office / nonfacility

Rate unavailable

Effective 2026-10-01

A rate is unavailable in one of these releases, so a change cannot be calculated.

Base rate by release · bars start at $0 · select a bar to compare

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
Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01Not available in this setting$1,085.31RVU26D
2026-07-01Not available in this setting$1,085.31RVU26C
2026-04-01Not available in this setting$1,085.31RVU26B
2026-01-01Not available in this setting$1,085.31RVU26A
2025-10-01Not available in this setting$1,132.33RVU25D
2025-07-01Not available in this setting$1,132.33RVU25C
2025-04-01Not available in this setting$1,132.33RVU25B
2025-01-01Not available in this setting$1,132.33RVU25A
2024-10-01Not available in this setting$1,160.45RVU24D
2024-07-01Not available in this setting$1,160.45RVU24C
2024-04-01Not available in this setting$1,160.45RVU24B
2024-03-09Not available in this setting$1,160.45RVU24AR
2024-01-01Not available in this setting$1,141.51RVU24A
2023-10-01Not available in this setting$1,169.84RVU23D
2023-07-01Not available in this setting$1,169.84RVU23C
2023-04-01Not available in this setting$1,169.84RVU23B
2023-01-01Not available in this setting$1,169.84RVU23A
2022-10-01Not available in this setting$1,186.89RVU22D
2022-07-01Not available in this setting$1,186.89RVU22C
2022-04-01Not available in this setting$1,186.89RVU22B
2022-01-01Not available in this setting$1,186.89RVU22A
2021-10-01Not available in this setting$1,189.85RVU21D
2021-07-01Not available in this setting$1,189.85RVU21C
2021-04-01Not available in this setting$1,189.85RVU21B
2021-01-01Not available in this setting$1,189.85RVU21A
2020-10-01Not available in this setting$1,244.90RVU20D
2020-07-01Not available in this setting$1,244.90RVU20C
2020-04-01Not available in this setting$1,244.90RVU20B
2020-01-01Not available in this setting$1,244.90RVU20A
2019-10-01Not available in this setting$1,253.72RVU19D
2019-07-01Not available in this setting$1,253.72RVU19C
2019-04-01Not available in this setting$1,215.53RVU19B
2019-01-01Not available in this setting$1,215.53RVU19A
2018-10-01Not available in this setting$1,260.66RVU18D
2018-07-01Not available in this setting$1,260.66RVU18C
2018-04-01Not available in this setting$1,260.66RVU18B
2018-01-01Not available in this setting$1,260.66RVU18AR1
2017-10-01Not available in this setting$1,413.60RVU17D
2017-07-01Not available in this setting$1,413.60RVU17C
2017-04-01Not available in this setting$1,413.60RVU17B
2017-01-01Not available in this setting$1,413.60RVU17A
2016-10-01Not available in this setting$1,409.01RVU16D
2016-07-01Not available in this setting$1,409.01RVU16C
2016-04-01Not available in this setting$1,409.01RVU16B
2016-01-01Not available in this setting$1,409.01RVU16A
2015-10-01Not available in this setting$1,465.24RVU15D
2015-07-01Not available in this setting$1,465.24RVU15C
2015-04-01Not available in this setting$1,457.95RVU15B
2015-01-01Not available in this setting$1,457.95RVU15A
2014-10-01Not available in this setting$1,297.11RVU14D
2014-07-01Not available in this setting$1,297.11RVU14C
2014-04-01Not available in this setting$1,297.11RVU14B
2014-01-01Not available in this setting$1,297.11RVU14A
2013-10-01Not available in this setting$1,277.45RVU13D
2013-07-01Not available in this setting$1,277.45RVU13C
2013-04-01Not available in this setting$1,277.45RVU13B
2013-01-01Not available in this setting$1,277.45RVU13AR

Price 35515 for an earlier date of service

Where the Idaho rate applies

Idaho is a Medicare payment area, not a city. Our Census mapping connects it to 235 cities and communities in Idaho. Some span more than one payment area; confirm with the service ZIP.

  • Aberdeen
  • Acequia
  • Albion
  • American Falls
  • Ammon
  • Arbon Valley
  • Arco
  • Arimo

Browse all communities in Idaho

35515 billing questions

How do I distinguish 35515 from a carotid-to-vertebral bypass?

Choose 35515 when the bypass runs from the subclavian artery to the vertebral artery. A carotid-to-vertebral bypass has a different inflow vessel and is represented by 35508.

Which operative details support reporting 35515?

The operative report should identify the subclavian inflow, vertebral outflow, laterality, and the bypass performed. The named vessel endpoints distinguish this service from nearby bypass procedures.

How does the 90-day global affect postoperative reporting?

The day-before preoperative visit and 90 days of related postoperative care are included in the global period.

How is 35515 handled when other procedures occur in the same session?

The highest-valued procedure is paid in full, and other procedures are paid at 50%. For bilateral work, modifier 50 is paid at 150%.

Can an assistant or co-surgeon be reported?

An assistant at surgery may be paid. Co-surgeons are paid only when supporting documentation is provided; team surgery 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
RVUs for 35515PPRRVU2026_Oct_nonQPP.csv, line 4,339 (RVU26D)
Geographic factors for IdahoGPCI2026.csv, line 47 (RVU26D)

Open CMS sourceHow we calculate rates

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