Billing code 33741: Atrial septostomyMedicare rate & RVUs in Nevada
Reports catheter-based creation or enlargement of an atrial communication to address a congenital cardiac anomaly, such as inadequate mixing in transposition of the great arteries.
CMS doesn’t publish an office rate for 33741 in Nevada.
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 33741 covers
A congenital interventional cardiologist performs this catheter-based procedure to create or enlarge an opening between the atria when a congenital heart defect makes that communication clinically necessary. A classic setting is transposition of the great arteries with inadequate mixing between the pulmonary and systemic circulations. The procedure is performed in a cardiac catheterization setting; imaging guidance, when performed, is included in the service.
Report 33741 for the atrial septostomy itself, rather than for creation of a different type of congenital cardiac shunt. The operative or catheterization report should identify the congenital anomaly, the atrial communication treated, and the intervention performed. The code has a 0-day global period, so same-day preoperative and postoperative care is 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 multiple-procedure reduction. Modifier 50 is inappropriate for this service. An assistant at surgery may be paid; co-surgeons and team surgery are 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.
33741 in Nevada**
| Payment locality | Office | Facility |
|---|---|---|
| Nevada** | Unavailable | $631.55 |
How the 33741 rate is calculated
Each of 33741’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 · 33741
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 13.65Practice expense 2.54Malpractice 3.26
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 33741
The CMS indicators that decide how 33741 is paid alongside other services.
CMS payment indicators · 33741
Atrial septostomy
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 000 | Same-day global: pre- and post-op care on the day of the procedure is 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) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
33741 without 51 · national facility
$649.65
Atrial septostomy
33741-51 · Second procedure: 50%
$324.83
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%).
33741 compared with similar codes
Compare codes
33741 vs 33745 vs 33746: national Medicare rates
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How to choose
- 33745Intracardiac shunt
- 33741 is for transcatheter atrial septostomy. 33745 is for transcatheter treatment involving creation of a congenital cardiac shunt.
- 33746Intracardiac shunt
- 33746 describes additional congenital cardiac shunt treatment. It is not an additional-unit code for atrial septostomy under 33741.
33741 billing questions
When should 33741 be reported instead of 33745?
Use 33741 for transcatheter atrial septostomy addressing a congenital cardiac anomaly. Code 33745 describes treatment involving creation of a congenital cardiac shunt, rather than an atrial septostomy.
Is imaging guidance separately reported with 33741?
Imaging guidance performed as part of the atrial septostomy is included in 33741.
Does 33741 have a postoperative global period?
It has a 0-day global period. Same-day preoperative and postoperative care is included.
Can modifier 50 be used?
No. Modifier 50 is inappropriate for this service based on its descriptor and anatomy.
Can an assistant or co-surgeon be reported?
An assistant at surgery may be paid. Co-surgeons and team surgery are not permitted for 33741.
How are other procedures in the same session paid?
The highest-valued procedure is paid in full, and other procedures performed in the same session are subject to the standard multiple-procedure reduction.
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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