No office rate
Choose 33771 when surgical enlargement of the VSD is part of the transposition repair. Choose 33770 when the repair is performed without that enlargement.
On this page
CMS RVU26D · Effective 2026-10-01
33771 TGA repair Medicare reimbursement rates in Missouri
Open repair of transposition of the great arteries with surgical enlargement of a ventricular septal defect when enlargement is part of the repair. Compare 33771 office and facility rates across CMS payment localities in Missouri.
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 33771 in Missouri?
Missouri has 3 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 3 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$1948.13–$1988.73
3 of 3 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 33771 pays more and less in Missouri
Congenital heart surgery
About 33771: Transposition repair with VSD enlargement
Open repair of transposition of the great arteries with surgical enlargement of a ventricular septal defect when enlargement is part of the repair.
This operation repairs transposition of the great arteries in a patient who also has a ventricular septal defect, with the surgeon surgically enlarging the defect as part of the repair. It is performed by a congenital cardiac surgeon, typically in an operating room with cardiopulmonary bypass, for congenital heart disease requiring this repair strategy. The operative report should identify the transposition and VSD and describe the enlargement performed during the repair.
Report this code when surgical enlargement of the VSD is performed as part of the transposition repair; use 33770 when the repair does not include that enlargement. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. For multiple procedures in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate. An assistant at surgery may be paid; co-surgeon payment requires supporting documentation, and team surgery is not permitted.
CMS billing rules for 33771
- 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 paid only with supporting documentation.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU39.61 · 66%
- Practice expense (office) RVU10.39 · 17%
- Malpractice RVU10.02 · 17%
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.
33771 compared with similar codes
Office rates for Missouri, from the same CMS release.
No office rate
33774 describes transposition repair using an atrial baffle procedure. It is not the code for a repair that includes surgical VSD enlargement.
No office rate
33782 identifies a Nikaidoh procedure. Use 33771 when the documented operation is transposition repair with surgical VSD enlargement rather than that distinct approach.
Compare 33771 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.
3 of 3 payment localities
Metropolitan Kansas City →
Office / nonfacility
Unavailable
Facility
$1975.86
Metropolitan St. Louis →
Office / nonfacility
Unavailable
Facility
$1988.73
Rest Of Missouri →
Office / nonfacility
Unavailable
Facility
$1948.13
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33771 billing questions
How does 33771 differ from 33770?
33771 is for transposition repair that includes surgical enlargement of the VSD. Use 33770 for the corresponding repair without that enlargement.
Should the VSD enlargement be reported separately?
The enlargement is part of the repair represented by 33771. The operative report should make clear that it was performed as part of the transposition repair.
What documentation supports 33771?
Document the transposition, the VSD, and the surgical enlargement performed during the repair. The operative report should distinguish this work from a repair without VSD enlargement.
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 does the multiple-procedure reduction affect 33771?
When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others are subject to the standard 50% reduction.
Should modifier 50 be appended?
No. The bilateral adjustment does not apply to this code, and modifier 50 is inappropriate.
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.
4,05833768,,Anast cavopulm sec sup v/c,A,,7.80,1.54,NA,1.54,,1.96,11.30,11.30,0,ZZZ,0.00,0.00,0.00,0,0,2,2,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,0593376F,,Ajcc brstcncr stage 2 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
4,06033770,,Rpr tga w/o surg enlgmnt vsd,A,,38.09,10.96,NA,10.96,,9.61,58.66,58.66,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,06133771,,Rpr tga w/surg enlgmnt vsd,A,,39.61,10.39,NA,10.39,,10.02,60.02,60.02,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,06233774,,Rpr tga atrial baffle px,A,,30.94,12.25,NA,12.25,,7.81,51.00,51.00,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,06333775,,Rpr tga atr bfl rmvl plm bnd,A,,32.17,12.02,NA,12.02,,8.11,52.30,52.30,0,090,0.09,0.84,0.07,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,06433776,,Rpr tga atr bfl clsr vsd,A,,33.88,12.95,NA,12.95,,8.55,55.38,55.38,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00