CPT code 33513: Coronary bypass, four venous grafts2026 Medicare rate & RVUs in North Dakota

Reports coronary artery bypass surgery using venous conduits for four coronary targets, when the bypasses are performed with venous grafts only.

CMS RVU26DEffective Oct 1, 2026One payment locality180 Medicare services in 2024

In North Dakota, Medicare pays $2,090.18 for 33513 in a facility. There’s no office rate.

Not available in this settingOffice (non-facility)
$2,090.18Hospital or facility

Check a contract rate as a % of Medicare · 33513 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 33513 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in North Dakota
  2. What 33513 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 33513 covers

Code 33513 describes coronary artery bypass surgery using venous conduits to bypass four coronary targets. A cardiothoracic surgeon typically performs the operation in a hospital operating room, often using segments of the patient’s saphenous vein to route blood around obstructed coronary arteries. The operative report should identify the conduit type and the distal coronary targets; sequential grafting may require attention to the number of distal anastomoses rather than simply the number of harvested vein segments.

Select this code when the bypasses are venous-only. If arterial and venous conduits are both used, the arterial bypass code and the applicable venous add-on code describe that combination instead. Endoscopic vein harvesting may be reported separately with 33508 when performed and supported by the operative record. The code has a 90-day global period, including the day-before preoperative visit and related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate; an assistant at surgery may be paid, but co-surgeons and team surgery are 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 North Dakota compares for 33513

Across 109 of 109 payment localities, the facility rate for 33513 runs from $2,035.36 in Wisconsin to $2,911.45 in Alaska. North Dakota pays $2,090.18. The RVUs are the same everywhere; the geographic indexes change the dollars.

33513 in North Dakota vs other payment areas
  1. North Dakota · this page$2,090.18
  2. Los Angeles, CA · California$2,328.88+$238.70
  3. Washington, DC area · District of Columbia$2,507.12+$416.94
  4. Miami, FL · Florida$2,872.30+$782.12
  5. Chicago, IL · Illinois$2,781.75+$691.57
  6. Manhattan, NY · New York$2,684.43+$594.25
  7. Alaska · Alaska$2,911.45+$821.27

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

Every other payment area

33513 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama—$2,089.36
ArkansasArkansas—$2,063.56
ArizonaArizona—$2,237.44
Bakersfield, CACalifornia—$2,236.01
Chico, CACalifornia—$2,206.82
El Centro, CACalifornia—$2,208.61
Fresno, CACalifornia—$2,206.82
Hanford, CACalifornia—$2,206.82

33513 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
33513 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 33513 in every payment locality

How the 33513 rate is calculated

Each of 33513’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 · 33513

RVUs × geographic indexes × conversion factor

Office or facility?

Work44.24

44.24 RVUs× 1.000 GPCI

Practice expense13.97

13.97 RVUs× 1.000 GPCI

Malpractice10.76

10.76 RVUs× 1.000 GPCI

Adjusted RVUs

68.9700

Conversion factor

$33.4009

Medicare rate

$2,303.66

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

The exact North Dakota inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

3,986

Code
33513
Physician work
44.24
Practice expense
13.97
Malpractice
10.76

GPCI2026.csv

84

Locality
North Dakota
Physician work
1.000
Practice expense
1.000
Malpractice
0.406
Facility calculation for 33513 in North Dakota
ComponentRVULocality factorAdjusted
Physician work44.24× 1.00044.2400
Practice expense13.97× 1.00013.9700
Malpractice10.76× 0.4064.3686
Total RVUs62.5786
Conversion factor× 33.4009

Facility rate, North Dakota$2090.18

Facility: (44.24 × 1 + 13.97 × 1 + 10.76 × 0.406) × $33.4009 = $2090.18

Open 33513 in the RVU calculator

Payment rules and modifiers for 33513

33513 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 33513

Coronary bypass, four venous grafts

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)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)2Paid.
Co-surgeons (62)0Not permitted.
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 · 33513

Coronary bypass, four venous grafts

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 51 · payment effect

With and without the modifier

33513 without 51 · national facility

$2,303.66

Coronary bypass, four venous grafts

33513-51 · Second procedure: 50%

$1,151.83

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

How 33513 has changed in North Dakota

33513 · 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$2,090.18RVU26D
2026-07-01Not available in this setting$2,090.18RVU26C
2026-04-01Not available in this setting$2,090.18RVU26B
2026-01-01Not available in this setting$2,090.18RVU26A
2025-10-01Not available in this setting$2,191.83RVU25D
2025-07-01Not available in this setting$2,191.83RVU25C
2025-04-01Not available in this setting$2,191.83RVU25B
2025-01-01Not available in this setting$2,191.83RVU25A
2024-10-01Not available in this setting$2,243.73RVU24D
2024-07-01Not available in this setting$2,243.73RVU24C
2024-04-01Not available in this setting$2,243.73RVU24B
2024-03-09Not available in this setting$2,243.73RVU24AR
2024-01-01Not available in this setting$2,207.11RVU24A
2023-10-01Not available in this setting$2,271.47RVU23D
2023-07-01Not available in this setting$2,271.47RVU23C
2023-04-01Not available in this setting$2,271.47RVU23B
2023-01-01Not available in this setting$2,271.47RVU23A
2022-10-01Not available in this setting$2,308.39RVU22D
2022-07-01Not available in this setting$2,308.39RVU22C
2022-04-01Not available in this setting$2,308.39RVU22B
2022-01-01Not available in this setting$2,308.39RVU22A
2021-10-01Not available in this setting$2,327.56RVU21D
2021-07-01Not available in this setting$2,327.56RVU21C
2021-04-01Not available in this setting$2,327.56RVU21B
2021-01-01Not available in this setting$2,327.56RVU21A
2020-10-01Not available in this setting$2,404.88RVU20D
2020-07-01Not available in this setting$2,404.88RVU20C
2020-04-01Not available in this setting$2,404.88RVU20B
2020-01-01Not available in this setting$2,404.88RVU20A
2019-10-01Not available in this setting$2,424.40RVU19D
2019-07-01Not available in this setting$2,424.40RVU19C
2019-04-01Not available in this setting$2,424.40RVU19B
2019-01-01Not available in this setting$2,424.40RVU19A
2018-10-01Not available in this setting$2,418.49RVU18D
2018-07-01Not available in this setting$2,418.49RVU18C
2018-04-01Not available in this setting$2,418.49RVU18B
2018-01-01Not available in this setting$2,418.49RVU18AR1
2017-10-01Not available in this setting$2,421.78RVU17D
2017-07-01Not available in this setting$2,421.78RVU17C
2017-04-01Not available in this setting$2,421.78RVU17B
2017-01-01Not available in this setting$2,421.78RVU17A
2016-10-01Not available in this setting$2,423.30RVU16D
2016-07-01Not available in this setting$2,423.30RVU16C
2016-04-01Not available in this setting$2,423.30RVU16B
2016-01-01Not available in this setting$2,423.30RVU16A
2015-10-01Not available in this setting$2,431.68RVU15D
2015-07-01Not available in this setting$2,431.68RVU15C
2015-04-01Not available in this setting$2,419.58RVU15B
2015-01-01Not available in this setting$2,419.58RVU15A
2014-10-01Not available in this setting$2,425.30RVU14D
2014-07-01Not available in this setting$2,425.30RVU14C
2014-04-01Not available in this setting$2,425.30RVU14B
2014-01-01Not available in this setting$2,425.30RVU14A
2013-10-01Not available in this setting$2,364.65RVU13D
2013-07-01Not available in this setting$2,364.65RVU13C
2013-04-01Not available in this setting$2,364.65RVU13B
2013-01-01Not available in this setting$2,364.65RVU13AR

Price 33513 for an earlier date of service

Where the North Dakota rate applies

North Dakota is a Medicare payment area, not a city. Our Census mapping connects it to 406 cities and communities in North Dakota. Some span more than one payment area; confirm with the service ZIP.

  • Abercrombie
  • Adams
  • Alamo
  • Alexander
  • Alice
  • Almont
  • Alsen
  • Ambrose

Browse all communities in North Dakota

33513 billing questions

How is 33513 distinguished from 33512 or 33514?

Choose by the number of coronary targets bypassed with venous grafts: 33513 is for four, 33512 for three, and 33514 for five. Use the operative report’s target and anastomosis details.

Can 33513 be reported when an arterial graft is also used?

For a mixed arterial-and-venous bypass, report the applicable arterial bypass code with the venous add-on code for the number of venous grafts. Code 33513 describes venous-only bypasses.

Is vein harvesting included in 33513?

Endoscopic vein harvesting may be separately reported with 33508 when performed. The operative record should support the harvesting method.

Should modifier 50 be appended for bypasses on both sides of the heart?

No. Modifier 50 is not appropriate for 33513; code selection reflects the number of coronary bypass targets, not a bilateral service.

What postoperative care is included in the global period?

The 90-day global period includes the day-before preoperative visit and related postoperative care. The code also permits payment for an assistant at surgery, while co-surgeons and team surgery are 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 33513PPRRVU2026_Oct_nonQPP.csv, line 3,986 (RVU26D)
Geographic factors for North DakotaGPCI2026.csv, line 84 (RVU26D)

Open CMS sourceHow we calculate rates

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