No office rate
Choose 33534 when two arterial grafts are used; 33533 represents one arterial graft.
On this page
CMS RVU26D · Effective 2026-10-01
33533 Arterial CABG Medicare reimbursement rates in Illinois
Reports coronary artery bypass surgery using one arterial graft, such as an internal thoracic artery graft to bypass a diseased coronary artery. Compare 33533 office and facility rates across CMS payment localities in Illinois.
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 33533 in Illinois?
Illinois has 4 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 4 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$1877.09–$2119.18
4 of 4 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.
Where 33533 pays more and less in Illinois
Cardiac surgery
About 33533: Single arterial coronary bypass graft
Reports coronary artery bypass surgery using one arterial graft, such as an internal thoracic artery graft to bypass a diseased coronary artery.
A cardiac surgeon uses an arterial conduit to route blood around a coronary artery blockage. A common example is an internal thoracic artery graft to the left anterior descending artery. The operation is typically performed in a hospital operating room for a patient with coronary artery disease requiring surgical revascularization. This code represents the bypass operation, not simply conduit harvesting.
Select this code when the operation uses one arterial graft; use the arterial CABG family’s higher-level codes when more arterial grafts are used. If venous grafting is also performed, the applicable combined arterial-venous code is reported with the arterial CABG code. The operative report should identify the graft type and number, bypassed vessels, and completed procedure. CMS assigns a 90-day global period, including the day-before preoperative visit and related postoperative care. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and others at 50%. Modifier 50 is inappropriate for this code. Assistant-at-surgery services may be paid; co-surgeons and team surgery are not permitted.
CMS billing rules for 33533
- 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 RVU32.91 · 63%
- Practice expense (office) RVU11.59 · 22%
- Malpractice RVU8.13 · 15%
68.7K
Medicare services in 2024 · #681 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.
33533 compared with similar codes
Office rates for Illinois, from the same CMS release.
No office rate
33510 represents CABG using a single venous graft. Use 33533 for a single arterial graft.
No office rate
33517 accounts for the venous graft portion of combined arterial-venous CABG; it is reported with the applicable arterial CABG code.
Compare 33533 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.
4 of 4 payment localities
Chicago →
Office / nonfacility
Unavailable
Facility
$2119.18
East St. Louis →
Office / nonfacility
Unavailable
Facility
$2002.27
Rest Of Illinois →
Office / nonfacility
Unavailable
Facility
$1877.09
Suburban Chicago →
Office / nonfacility
Unavailable
Facility
$1985.67
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33533 billing questions
When should this code be chosen instead of 33534?
Use 33533 when one arterial graft is used for CABG. Code 33534 represents CABG using two arterial grafts.
Can this code be reported when venous grafting is also performed?
Yes. Report the applicable combined arterial-venous CABG code, such as 33517 for one venous graft, with the arterial CABG code when both graft types are used.
Does this code describe harvesting the arterial conduit?
No. It represents the coronary bypass operation using an arterial graft, rather than conduit harvesting alone.
What operative documentation supports one arterial graft?
The operative report should identify the arterial conduit used, the number of arterial grafts, the coronary targets, and the bypass work performed.
How does the global period affect postoperative billing?
The 90-day global period includes the day-before preoperative visit and related postoperative care. Those services are part of the surgical global package.
Can an assistant surgeon or co-surgeon be reported?
CMS indicates that an assistant at surgery may be paid for this procedure. 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 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.
3,99533523,,Cabg art-vein six or more,A,,15.68,3.22,NA,3.22,,3.75,22.65,22.65,0,ZZZ,0.00,0.00,0.00,0,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,9963352F,,No sig dep symp by dep tool,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
3,99733530,,Coronary artery bypass/reop,A,,9.88,1.99,NA,1.99,,2.42,14.29,14.29,0,ZZZ,0.00,0.00,0.00,0,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,99833533,,Cabg arterial single,A,,32.91,11.59,NA,11.59,,8.13,52.63,52.63,0,090,0.09,0.82,0.09,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,99933534,,Cabg arterial two,A,,38.88,13.22,NA,13.22,,9.61,61.71,61.71,0,090,0.09,0.82,0.09,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,00033535,,Cabg arterial three,A,,43.63,14.08,NA,14.08,,10.72,68.43,68.43,0,090,0.09,0.82,0.09,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,00133536,,Cabg arterial four or more,A,,47.22,14.80,NA,14.80,,11.65,73.67,73.67,0,090,0.09,0.82,0.09,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00