No office rate
33660 is for a partial atrioventricular canal defect; this code is for a complete canal defect.
On this page
CMS RVU26D · Effective 2026-10-01
33670 Canal repair Medicare reimbursement rates in Maine
Surgical reconstruction of a complete atrioventricular canal defect, including its septal openings and common valve, reported for the qualifying repair. Compare 33670 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 33670 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
$1679.02–$1704.83
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.
Congenital cardiac surgery
About 33670: Complete atrioventricular canal repair
Surgical reconstruction of a complete atrioventricular canal defect, including its septal openings and common valve, reported for the qualifying repair.
This code describes surgery for a complete atrioventricular canal defect, a congenital malformation involving the atrial and ventricular septa and a common atrioventricular valve. A congenital cardiac surgeon typically closes the septal openings and reconstructs the valve, sometimes using a prosthetic valve. The operation is generally performed in a hospital operating room as open-heart surgery, often for an infant or child with a complete atrioventricular septal defect.
Select this code when the operative findings and repair establish a complete canal defect, rather than a partial or intermediate canal. The operative report should document the anatomy and the septal and valve work performed. Medicare assigns a 90-day global period, including the day-before preoperative visit and 90 days of related postoperative care. When other procedures are performed in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard multiple-procedure reduction. Assistant-at-surgery payment may be available; co-surgeon payment requires supporting documentation, and team surgery is not permitted.
CMS billing rules for 33670
- 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 RVU35.71 · 66%
- Practice expense (office) RVU9.74 · 18%
- Malpractice RVU9.00 · 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.
33670 compared with similar codes
Office rates for Maine, from the same CMS release.
No office rate
33665 describes an intermediate canal repair. Choose this code when the documented anatomy and operation establish a complete canal defect.
No office rate
33641 is for repair of an atrial septal defect, not reconstruction of a complete atrioventricular canal.
No office rate
33681 describes closure of a single ventricular septal defect; it does not represent repair of the combined septal and valve anatomy of a complete canal.
Compare 33670 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
$1679.02
Southern Maine →
Office / nonfacility
Unavailable
Facility
$1704.83
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33670 billing questions
How is this code distinguished from partial or intermediate canal repair?
Use this code for repair of a complete atrioventricular canal defect. Codes 33660 and 33665 describe partial and intermediate canal repairs, respectively; base selection on the operative anatomy and documented repair.
Can an atrial or ventricular septal defect repair be reported separately?
The septal openings are components of the complete canal defect repair described here. Do not separately report an isolated septal-defect closure for work incorporated into this reconstruction.
What documentation supports code selection?
The operative report should establish the complete canal anatomy and describe the septal closure and common-valve reconstruction performed.
How does the 90-day global period affect postoperative billing?
The day-before preoperative visit and 90 days of related postoperative care are included in the global period.
Can an assistant or co-surgeon be reported?
Assistant-at-surgery payment may be available. Co-surgeon payment requires supporting documentation; team surgery is not permitted for this code.
What happens when another procedure is performed in the same session?
The highest-valued procedure is paid in full, and other procedures 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 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.
4,02333647,,Repair heart septum defects,A,,32.18,10.46,NA,10.46,,8.11,50.75,50.75,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,02433660,,Repair of heart defects,A,,31.03,10.25,NA,10.25,,7.83,49.11,49.11,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,02533665,,Repair of heart defects,A,,33.98,10.82,NA,10.82,,8.58,53.38,53.38,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,02633670,,Repair of heart chambers,A,,35.71,9.74,NA,9.74,,9.00,54.45,54.45,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,02733675,,Close mult vsd,A,,35.05,11.06,NA,11.06,,8.84,54.95,54.95,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,02833676,,Close mult vsd w/resection,A,,36.03,11.24,NA,11.24,,9.09,56.36,56.36,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00
4,02933677,,Cl mult vsd w/rem pul band,A,,37.49,11.53,NA,11.53,,9.44,58.46,58.46,0,090,0.09,0.84,0.07,2,0,2,1,0,9,,33.4009,09,0,99,0.00,0.00,0.00