CPT code 33412: Aortic valve replacement, coronary ostia translocation2026 Medicare rate & RVUs in Michigan
Open aortic valve replacement involving translocation of the coronary ostia is reported when the surgeon detaches and reimplants the coronary openings.
CMS doesn’t publish an office rate for 33412 in Michigan.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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What 33412 covers
This code describes open replacement of the aortic valve with translocation of the coronary ostia. During the operation, the surgeon mobilizes the coronary openings from the aortic root and reimplants them in the reconstructed root. Cardiothoracic surgeons typically perform this complex procedure in a hospital operating room with cardiopulmonary bypass. The operative report should identify the valve replacement and document the coronary ostia translocation, rather than only describing routine valve replacement or annular enlargement.
Report the code when the operative work includes this coronary reimplantation as part of aortic valve replacement; distinguish it from standard replacement and from replacement with annular enlargement alone. The 90-day global period includes the day-before preoperative visit and 90 days of 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 multiple-procedure reduction. An assistant at surgery may be paid. Co-surgeon payment requires supporting documentation, while team surgery is not permitted. Modifier 50 is inappropriate for this aortic procedure.
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.
Where 33412 pays more and less in Michigan
| Payment locality | Office | Facility |
|---|---|---|
| Detroit, MI | Unavailable | $3,230.67 |
| Rest of Michigan | Unavailable | $2,944.95 |
How the 33412 rate is calculated
Each of 33412’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 · 33412
RVUs × geographic indexes × conversion factor
Work57.53
57.53 RVUs× 1.000 GPCI
Practice expense16.47
16.47 RVUs× 1.000 GPCI
Malpractice13.82
13.82 RVUs× 1.000 GPCI
Adjusted RVUs
87.8200
Conversion factor
$33.4009
Medicare rate
$2,933.27
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 33412
33412 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 33412
Aortic valve replacement, coronary ostia translocation
| 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 · 33412
Aortic valve replacement, coronary ostia translocation
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
33412 without 51 · national facility
$2,933.27
Aortic valve replacement, coronary ostia translocation
33412-51 · Second procedure: 50%
$1,466.64
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%).
33412 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 33405Aortic valve replacementStandard prosthetic valve
- Use 33405 for the specified prosthetic aortic valve replacement without coronary ostia translocation. Use 33412 when the surgeon detaches and reimplants the coronary openings.
- 33411Aortic valve replacementTransventricular approach
- 33411 identifies aortic valve replacement with annular enlargement. The defining additional work for 33412 is translocation of the coronary ostia.
- 33440Aortic valve replacementRoss procedure
- 33440 describes aortic valve replacement using a pulmonary autograft. It is a distinct technique from replacement involving coronary ostia translocation.
33412 billing questions
How is this code different from standard aortic valve replacement?
Use this code when the surgeon translocates and reimplants the coronary ostia as part of valve replacement. A routine replacement without that work is represented by a different code.
Is coronary ostia translocation separately reported?
It is included in this code’s described operative service. The operative report should document the translocation as part of the aortic valve replacement.
How does this differ from replacement with annular enlargement?
This code identifies coronary ostia translocation. Aortic valve replacement with annular enlargement alone is a different service; select based on the work documented in the operative report.
What does the 90-day global period include?
It includes the day-before preoperative visit and 90 days of related postoperative care.
Can an assistant or co-surgeon be reported?
An assistant at surgery may be paid. Co-surgeon payment requires supporting documentation; team surgery is not permitted.
How are other procedures performed in the same session paid?
The highest-valued procedure is paid in full, and other procedures are subject to the standard multiple-procedure reduction. Modifier 50 is inappropriate for this aortic operation.
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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