No office rate
93580 is used for transcatheter closure of an atrial septal defect; 93583 reduces hypertrophied septal heart muscle.
On this page
CMS RVU26D · Effective 2026-10-01
93583 Septal reduction Medicare reimbursement rates in Maine
Reports catheter-directed septal reduction, typically alcohol ablation for obstructive hypertrophic cardiomyopathy, performed in a cardiac catheterization setting. Compare 93583 office and facility rates across CMS payment localities in Maine.
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 93583 in Maine?
Maine has 2 payment localities in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the 2 payment areas shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$593.67–$600.75
2 of 2 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.
Cardiac catheterization
About 93583: Percutaneous septal reduction therapy
Reports catheter-directed septal reduction, typically alcohol ablation for obstructive hypertrophic cardiomyopathy, performed in a cardiac catheterization setting.
An interventional cardiologist uses a catheter to deliver alcohol into a selected septal coronary branch, creating a controlled injury in the thickened heart muscle to reduce obstruction to blood flow. The procedure is typically performed in a hospital catheterization laboratory for a patient with obstructive hypertrophic cardiomyopathy. Temporary pacemaker insertion and selective coronary angiography, when performed as part of the treatment, are included in this service.
Report the code for the transcatheter septal-reduction treatment, not for closure of a congenital septal defect. The procedure report should support the indication, target branch, and treatment performed. CMS assigns 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% multiple-procedure reduction. Assistant-at-surgery payment requires documented medical necessity; co-surgeon and team-surgery payment are not permitted.
CMS billing rules for 93583
- Global period
- Minor procedure with a 0-day global period: same-day preoperative and postoperative care is 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 is paid only with documentation of medical necessity.
- Co-surgeons
- Co-surgeons not permitted.
- Team surgery
- Team surgery not permitted.
Where the value comes from
- Work RVU13.41 · 70%
- Practice expense (office) RVU2.58 · 13%
- Malpractice RVU3.20 · 17%
359
Medicare services in 2024 · #3829 by national volume
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.
93583 compared with similar codes
Office rates for Maine, from the same CMS release.
No office rate
93581 addresses transcatheter closure of a ventricular septal defect, not catheter-directed treatment of obstructive myocardial thickening.
No office rate
33416 describes surgical septal myectomy. Choose it for the surgical approach rather than catheter-directed septal reduction reported with 93583.
Compare 93583 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.
2 of 2 payment localities
Rest Of Maine →
Office / nonfacility
Unavailable
Facility
$593.67
Southern Maine →
Office / nonfacility
Unavailable
Facility
$600.75
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93583 billing questions
When should 93583 be selected instead of a septal defect closure code?
Use 93583 for catheter-directed reduction of hypertrophied heart muscle, typically in obstructive hypertrophic cardiomyopathy. Codes such as 93580 and 93581 describe closure of an atrial or ventricular septal defect.
Can selective coronary angiography be reported separately?
Selective coronary angiography performed as part of the septal-reduction treatment is included in 93583. The code also includes temporary pacemaker insertion when performed.
What supports reporting 93583?
The record should identify the clinical indication and document the catheter-based septal-reduction treatment, including the target branch and intervention performed.
How does the 0-day global period affect same-day care?
Same-day preoperative and postoperative care is included in the procedure's payment. The 0-day global period does not extend routine global care beyond the procedure date.
How are other procedures in the same session paid?
CMS pays the highest-valued procedure in full and applies the standard multiple-procedure reduction to other procedures performed in that session.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery payment requires documentation of medical necessity. CMS does not permit co-surgeon or team-surgery payment for this service.
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.
12,14993580,,Transcath closure of asd,A,,17.52,3.69,NA,3.69,,4.06,25.27,25.27,0,000,0.00,0.00,0.00,2,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15093581,,Transcath closure of vsd,A,,23.78,4.82,NA,4.82,,5.70,34.30,34.30,0,000,0.00,0.00,0.00,2,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15193582,,Perq transcath closure pda,A,,12.00,2.24,NA,2.24,,2.87,17.11,17.11,0,000,0.00,0.00,0.00,2,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15293583,,Perq transcath septal reduxn,A,,13.41,2.58,NA,2.58,,3.20,19.19,19.19,0,000,0.00,0.00,0.00,2,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15393584,,Vngrph chd anom/persist svc,A,,1.17,0.22,NA,0.22,,0.07,1.46,1.46,0,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15493585,,Vngrph chd azygs/hemiazygs,A,,1.10,0.21,NA,0.21,,0.07,1.38,1.38,0,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
12,15593586,,Vngrph chd coronary sinus,A,,1.39,0.31,NA,0.31,,0.08,1.78,1.78,0,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00