Billing code 33504: Coronary repairMedicare rate & RVUs in Minnesota
Surgical graft-based repair of a coronary artery arising from the pulmonary artery, reported when the operative approach uses coronary artery grafting.
CMS doesn’t publish an office rate for 33504 in Minnesota.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 9 sections
What 33504 covers
This major cardiac operation corrects an anomalous coronary artery that originates from the pulmonary artery by using a graft-based reconstruction. It is typically performed by a cardiothoracic surgeon in a hospital operating room, often for a congenital coronary anomaly such as anomalous left coronary artery from the pulmonary artery. The operative report should identify the anomalous origin and describe the graft-based repair performed.
Select this code when the documented technique matches this graft-based repair, rather than a tunnel, pulmonary artery translocation, or intramural-course repair. The 90-day global period includes 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 other procedures are subject to the standard 50% multiple-procedure reduction. Modifier 50 is inappropriate for this anatomy. An assistant at surgery may be paid; co-surgeons require 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.
33504 in Minnesota
| Payment locality | Office | Facility |
|---|---|---|
| Minnesota | Unavailable | $1,260.27 |
How the 33504 rate is calculated
Each of 33504’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 · 33504
RVUs × geographic indexes × conversion factor
Work24.82
24.82 RVUs× 1.000 GPCI
Practice expense10.75
10.75 RVUs× 1.000 GPCI
Malpractice6.25
6.25 RVUs× 1.000 GPCI
Adjusted RVUs
41.8200
Conversion factor
$33.4009
Medicare rate
$1,396.83
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 33504
33504 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 33504
Coronary repair
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 2 | Paid. |
| Co-surgeons (62) | 1 | Permitted with supporting documentation. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.09/0.84/0.07 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 33504
Coronary repair
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.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
33504 without 51 · national facility
$1,396.83
Coronary repair
33504-51 · Second procedure: 50%
$698.42
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%).
33504 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 33503Coronary repair
- Both are in the anomalous coronary artery repair family. Use the code matching the specific repair technique documented in the operative report.
- 33505Coronary repair
- 33505 identifies repair by creating an intrapulmonary tunnel; 33504 is for the graft-based approach.
- 33506Coronary repair
- 33506 identifies repair by pulmonary artery translocation, rather than the graft-based repair reported with 33504.
- 33507Coronary repair
- 33507 addresses an anomalous aortic coronary origin with an intramural course; 33504 concerns a coronary artery arising from the pulmonary artery.
33504 billing questions
What documentation supports reporting 33504?
The operative report should establish the anomalous coronary origin and describe the graft-based repair. The documented technique should distinguish this service from a tunnel, translocation, or intramural-course repair.
How does 33504 differ from 33505 or 33506?
Those codes identify different repair approaches: creation of an intrapulmonary tunnel for 33505 and pulmonary artery translocation for 33506. Follow the technique documented in the operative report.
Is modifier 50 appropriate?
No. The anatomy and descriptor make bilateral adjustment inappropriate for this service.
How does the 90-day global period affect postoperative billing?
The day-before preoperative visit and 90 days of related postoperative care are included in the global period. Related routine postoperative care during that period is not separately reported as an additional service.
Can an assistant or co-surgeon be reported?
An assistant at surgery may be paid. Co-surgeon payment requires supporting documentation, while team surgery is not permitted.
What happens when another procedure is performed in the same session?
The highest-valued procedure is paid in full, and other procedures are subject to the standard multiple-procedure reduction, with payment at 50%.
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
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