Billing code 93580: ASD closureMedicare rate & RVUs in Washington
Reports catheter-based device closure of an atrial septal defect or other congenital interatrial communication in a cardiac catheterization setting.
CMS doesn’t publish an office rate for 93580 in Washington.
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 93580 covers
This service closes an atrial septal defect or another congenital communication between the atria by delivering an occlusion device through a catheter. It is commonly performed for a suitably selected secundum ASD by an interventional cardiologist or congenital heart specialist in a cardiac catheterization laboratory, with imaging used to guide device placement and assess the result.
Report the code for the transcatheter closure service, supported by documentation of the defect or communication, its clinical indication and anatomy, device deployment, and the completion assessment. The procedure has a 0-day global period, so same-day preoperative and postoperative care is included. 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% reduction. Modifier 50 is inappropriate. Assistant-at-surgery payment requires documented medical necessity; 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.
Where 93580 pays more and less in Washington
| Payment locality | Office | Facility |
|---|---|---|
| Rest Of Washington | Unavailable | $825.77 |
| Seattle (King Cnty) | Unavailable | $876.46 |
How the 93580 rate is calculated
Each of 93580’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 · 93580
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 17.52Practice expense 3.69Malpractice 4.06
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 93580
The CMS indicators that decide how 93580 is paid alongside other services.
CMS payment indicators · 93580
ASD closure
| 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) | 0 | Not paid without supporting documentation. |
| 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
93580 without 51 · national facility
$844.04
ASD closure
93580-51 · Second procedure: 50%
$422.02
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%).
93580 compared with similar codes
Compare codes
93580 vs 93581 vs 93582 vs 93583: national Medicare rates
Swap in your local Medicare rate.
How to choose
- 93581VSD closure
- Use 93580 for closure of a communication between the atria; use 93581 for a ventricular septal defect.
- 93582PDA closure
- 93582 treats a patent ductus arteriosus, not an opening between the atria.
- 93583Septal reduction
- 93583 is for transcatheter septal reduction, not device closure of an ASD or other interatrial communication.
93580 billing questions
How is this code distinguished from 93581?
93580 is for catheter-based closure of an interatrial communication, such as an ASD. 93581 describes closure of a ventricular septal defect.
Is this code reported for each closure device?
The code represents the transcatheter closure service, not a separate line for each device. Document the defect treated and the device deployment; do not infer units from the number of devices.
Can modifier 50 be used?
No. The CMS bilateral adjustment does not apply to this code, and modifier 50 is inappropriate for the anatomy and service.
How does the multiple procedure rule affect same-session services?
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.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery payment is allowed only when medical necessity is documented. Co-surgeons and team surgery are 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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