No office rate
33415 treats discrete obstructing tissue below the aortic valve. 33416 targets ventricular septal muscle in hypertrophic subaortic obstruction.
On this page
CMS RVU26D · Effective 2026-10-01
33415 Subaortic resection Medicare reimbursement rates in Massachusetts
Open-heart resection of obstructing tissue beneath the aortic valve treats discrete subaortic stenosis and is performed with cardiopulmonary bypass. Compare 33415 office and facility rates across CMS payment localities in Massachusetts.
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 33415 in Massachusetts?
Massachusetts 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
$1883.24–$1996.50
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 surgery
About 33415: Subaortic tissue resection with bypass
Open-heart resection of obstructing tissue beneath the aortic valve treats discrete subaortic stenosis and is performed with cardiopulmonary bypass.
This operation removes tissue beneath the aortic valve that creates a discrete obstruction to blood leaving the left ventricle. A cardiac surgeon performs it through an open-heart approach with cardiopulmonary bypass. The service can include septal muscle removal when needed as part of treating the subaortic obstruction. It is distinct from an operation directed at repairing or replacing the aortic valve itself.
Report 33415 when the operative target is subvalvular tissue causing discrete subaortic stenosis. The operative report should identify the obstructing tissue and describe its resection and use of bypass. CMS assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. 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 may be made; co-surgeon payment requires supporting documentation. Team surgery payment is not permitted.
CMS billing rules for 33415
- 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 RVU36.34 · 64%
- Practice expense (office) RVU11.67 · 20%
- Malpractice RVU9.00 · 16%
109
Medicare services in 2024 · #4814 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.
33415 compared with similar codes
Office rates for Massachusetts, from the same CMS release.
No office rate
33414 is directed at repairing the aortic valve itself; 33415 removes obstructing tissue below the valve.
No office rate
33405 replaces the aortic valve. 33415 treats subvalvular obstruction without describing valve replacement.
Compare 33415 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
Metropolitan Boston →
Office / nonfacility
Unavailable
Facility
$1996.50
Rest Of Massachusetts →
Office / nonfacility
Unavailable
Facility
$1883.24
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33415 billing questions
How do I distinguish 33415 from 33416?
Use 33415 for removal of discrete obstructing tissue beneath the aortic valve. Code 33416 describes ventricular septal muscle resection for hypertrophic subaortic obstruction.
Does 33415 include myectomy?
The service may include myectomy when it is part of resecting tissue for discrete subaortic stenosis. The operative report should show the subvalvular obstruction being treated.
Is aortic valve repair or replacement included?
33415 addresses tissue below the valve, not repair or replacement of the valve. A separate valve procedure may be reported when independently performed for coexisting valve disease.
What postoperative care is included?
The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.
How are multiple procedures in the same session paid?
The highest-valued procedure is paid in full, and other procedures are subject to the standard multiple-procedure reduction.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery payment may be made. Co-surgeon payment requires supporting documentation; team surgery payment 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 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.
3,94133412,,Replacement of aortic valve,A,,57.53,16.47,NA,16.47,,13.82,87.82,87.82,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,94233413,,Replacement of aortic valve,A,,58.37,17.90,NA,17.90,,14.00,90.27,90.27,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,94333414,,Repair of aortic valve,A,,38.39,11.69,NA,11.69,,9.70,59.78,59.78,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,94433415,,Revision subvalvular tissue,A,,36.34,11.67,NA,11.67,,9.00,57.01,57.01,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,94533416,,Revise ventricle muscle,A,,35.65,12.53,NA,12.53,,8.77,56.95,56.95,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,94633417,,Repair of aortic valve,A,,28.60,11.49,NA,11.49,,7.22,47.31,47.31,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,94733418,,Repair tcat mitral valve,A,,31.44,8.46,NA,8.46,,7.43,47.33,47.33,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00