No office rate
Use 33510 for one venous bypass graft and 33511 for two. The operative report’s graft count distinguishes them.
On this page
CMS RVU26D · Effective 2026-10-01
33510 Coronary bypass Medicare reimbursement rates in Massachusetts
Report this code for coronary artery bypass surgery using one venous graft to bypass one coronary target, without an arterial bypass graft. Compare 33510 office and facility rates across CMS payment localities in Massachusetts.
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.
What does Medicare pay for 33510 in Massachusetts?
Massachusetts has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$1797.13–$1907.42
2 of 2 localities have a supported rate.
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Cardiac surgery
About 33510: Single venous coronary bypass graft
Report this code for coronary artery bypass surgery using one venous graft to bypass one coronary target, without an arterial bypass graft.
A cardiac surgeon uses a vein conduit, commonly the saphenous vein, to route blood around a blocked coronary artery. This code describes a bypass using one venous graft to one coronary target. The operation is performed in a cardiac operating room, usually in a hospital; the code identifies the graft configuration rather than whether the operation is performed on or off pump.
Select the code from the operative report’s account of the conduit type and number of coronary targets bypassed. A single venous graft supports this code; two or more venous grafts point to higher-count codes in the same series. The 90-day global period includes the day-before preoperative visit and related postoperative care during the 90 days after surgery. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and others at 50%. Assistant-at-surgery payment may be made; co-surgeons and team surgery are not permitted. Modifier 50 is inappropriate for this descriptor and anatomy.
CMS billing rules for 33510
- 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 not permitted.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU34.11 · 63%
- Practice expense (office) RVU11.85 · 22%
- Malpractice RVU8.37 · 15%
2.5K
Medicare services in 2024 · #2285 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.
33510 compared with similar codes
Office rates for Massachusetts, from the same CMS release.
No office rate
Use 33517 for the venous portion of a mixed arterial-and-venous CABG configuration; 33510 describes a vein-only configuration.
No office rate
33533 describes a single arterial bypass graft. This code describes a single venous bypass graft.
No office rate
33508 identifies endoscopic vein harvesting, not the coronary bypass itself. This code reports the single venous bypass graft.
Compare 33510 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
2 of 2 payment localities
Metropolitan Boston →
Office / nonfacility
Unavailable
Facility
$1907.42
Rest Of Massachusetts →
Office / nonfacility
Unavailable
Facility
$1797.13
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33510 billing questions
How is this code distinguished from 33511?
This code represents one venous coronary bypass graft. Code 33511 represents two venous grafts; use the operative report’s documented graft count.
Does the number of harvested veins determine the code?
Choose the CABG code based on the bypass graft configuration and coronary targets documented in the operative report, not simply the amount of vein harvested.
Can vein harvesting be reported separately?
Endoscopic vein harvesting has a separate code, 33508. The operative documentation should identify the harvesting method and the CABG procedure performed.
Can modifier 50 be used for a bypass on both sides?
No. Bilateral adjustment is inappropriate for this descriptor and anatomy.
How are multiple procedures and postoperative visits handled?
The 90-day global period includes the day-before preoperative visit and related postoperative care. For multiple procedures in the same session, the highest-valued procedure is paid in full and others at 50%.
May an assistant or co-surgeon be reported?
Assistant-at-surgery payment may be made. Co-surgeons and team surgery are not permitted for this code.
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.
3,98033508,,Endoscopic vein harvest,A,,0.30,0.06,NA,0.06,,0.07,0.43,0.43,0,ZZZ,0.00,0.00,0.00,0,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,98133509,,Ndsc hrv uxtr art 1 sgm cab,A,,3.26,0.66,NA,0.66,,0.81,4.73,4.73,0,ZZZ,0.00,0.00,0.00,0,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,9823350F,,Mammo bx proven malig docd,I,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
3,98333510,,Cabg vein single,A,,34.11,11.85,NA,11.85,,8.37,54.33,54.33,0,090,0.09,0.84,0.07,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,98433511,,Cabg vein two,A,,37.49,12.97,NA,12.97,,9.26,59.72,59.72,0,090,0.09,0.84,0.07,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,98533512,,Cabg vein three,A,,42.88,14.21,NA,14.21,,10.52,67.61,67.61,0,090,0.09,0.84,0.07,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,98633513,,Cabg vein four,A,,44.24,13.97,NA,13.97,,10.76,68.97,68.97,0,090,0.09,0.84,0.07,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00