Billing code 33783: Nikaidoh repairMedicare rate & RVUs in Oklahoma
Reports a Nikaidoh aortic root translocation for complex transposition, including coronary ostia implantation, during congenital heart surgery.
CMS doesn’t publish an office rate for 33783 in Oklahoma.
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 33783 covers
This code describes a Nikaidoh repair in which the aortic root is translocated and the coronary ostia are implanted as part of the reconstruction. Congenital cardiac surgeons perform this complex operation in a hospital operating room, typically for transposition of the great arteries with a ventricular septal defect and significant subpulmonary or pulmonary outflow obstruction. The operative report should identify the anatomy treated and document the root translocation and coronary ostia implantation.
Report the code for the Nikaidoh operation with coronary ostia implantation, rather than for isolated coronary implantation. It has a 90-day global period: the day-before preoperative visit and related postoperative care during that period are included. 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% multiple-procedure reduction. Modifier 50 is inappropriate. An assistant at surgery may be paid; co-surgeon payment requires 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.
33783 in Oklahoma
| Payment locality | Office | Facility |
|---|---|---|
| Oklahoma | Unavailable | $3,031.41 |
How the 33783 rate is calculated
Each of 33783’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 · 33783
RVUs × geographic indexes × conversion factor
Work63.45
63.45 RVUs× 1.000 GPCI
Practice expense16.65
16.65 RVUs× 1.000 GPCI
Malpractice16.01
16.01 RVUs× 1.000 GPCI
Adjusted RVUs
96.1100
Conversion factor
$33.4009
Medicare rate
$3,210.16
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 33783
33783 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 33783
Nikaidoh 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 · 33783
Nikaidoh 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
33783 without 51 · national facility
$3,210.16
Nikaidoh repair
33783-51 · Second procedure: 50%
$1,605.08
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%).
33783 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 33782Nikaidoh repair
- This is the Nikaidoh code that specifies coronary ostia implantation. Compare the operative details with the sibling code before selecting the service.
- 33770TGA repair
- This code describes a different transposition repair involving VSD closure without surgical enlargement, rather than a Nikaidoh aortic root translocation.
- 33771TGA repair
- This code describes a different transposition repair involving surgical enlargement of the VSD, rather than a Nikaidoh aortic root translocation.
33783 billing questions
How does this differ from 33782?
Both describe a Nikaidoh repair. Select the code that matches the operative service, including whether coronary ostia implantation is part of the procedure.
Should coronary ostia implantation be reported separately?
This code identifies the Nikaidoh procedure with coronary ostia implantation. The operative report should support that the implantation was performed as part of the repair.
Can modifier 50 be used?
No. The CMS bilateral adjustment does not apply to this procedure, and modifier 50 is inappropriate.
What postoperative care is included?
The 90-day global period includes the day-before preoperative visit and related postoperative care during the 90 days after surgery.
Can an assistant or co-surgeon be paid?
Assistant-at-surgery payment may be made. Co-surgeon payment requires supporting documentation; team surgery is 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
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