Billing code 33710: Heart defect repairMedicare rate & RVUs in Ohio
Open surgical repair of a primum atrial septal defect, often with associated left atrioventricular valve cleft repair, in a patient with a partial atrioventricular septal defect.
CMS doesn’t publish an office rate for 33710 in Ohio.
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 33710 covers
This code describes open repair of a primum atrial septal defect, the atrial-level component of a partial atrioventricular septal defect. The operation may include repair of an associated cleft in the left atrioventricular valve. Congenital cardiac surgeons typically perform the procedure in an operating room, using the operative approach and materials documented for the patient’s anatomy and repair.
Report the code when the operative record supports repair of the primum defect; distinguish it from repair of secundum or sinus venosus defects. Documentation should identify the defect type and describe the septal and any associated valve repair. The procedure has a 90-day global period, including the day-before preoperative visit and related postoperative care during that period. 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 multiple-procedure reduction. Modifier 50 is inappropriate for this code. Assistant-at-surgery services 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.
33710 in Ohio
| Payment locality | Office | Facility |
|---|---|---|
| Ohio | Unavailable | $1,877.07 |
How the 33710 rate is calculated
Each of 33710’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 · 33710
RVUs × geographic indexes × conversion factor
Swap in your local Medicare rate.
Work 36.56Practice expense 11.33Malpractice 9.22
All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.
Payment rules and modifiers for 33710
33710 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 33710
Heart defect repair
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are 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. |
| Split (54/55/56) | 0.09/0.84/0.07 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 33710
Heart defect repair
90-day global period ends
Dec 30, 2026
Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).
Visit on Oct 31, 2026
Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
33710 without 51 · national facility
$1,907.53
Heart defect repair
33710-51 · Second procedure: 50%
$953.77
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%).
33710 compared with similar codes
Compare codes
33710 vs 33702 vs 33720 vs 33724: national Medicare rates
Swap in your local Medicare rate.
How to choose
- 33702Heart defect repair
- Use 33702 for a secundum atrial septal defect. This code is for the primum defect associated with partial atrioventricular septal defect.
- 33720Heart defect repair
- Use 33720 for a sinus venosus defect. The defect location and associated anatomy distinguish it from a primum defect.
- 33724Venous anomaly repair
- 33724 addresses repair of an anomalous pulmonary venous connection. It is not the code for repair of a primum atrial septal defect.
33710 billing questions
How is this code distinguished from repair of a secundum atrial septal defect?
This code is for a primum defect, associated with the partial atrioventricular septal defect spectrum. A secundum defect is a different anatomic subtype and is reported with 33702 when its criteria are met.
Does the code include repair of an associated valve cleft?
Repair of an associated left atrioventricular valve cleft may be part of the operation. The operative report should clarify the defect and the work performed; do not infer valve repair from the diagnosis alone.
Can modifier 50 be used for repair on both sides?
No. Modifier 50 is inappropriate for this code because the descriptor or anatomy does not support bilateral adjustment.
What postoperative care is included in the global period?
The 90-day global period includes the day-before preoperative visit and related postoperative care during the 90 days after surgery.
Can an assistant surgeon be reported?
Assistant-at-surgery services may be paid for this procedure. Co-surgeons and team surgery are not permitted under the CMS rules supplied for this code.
How are other procedures from the same session paid?
Under the standard multiple-procedure reduction, the highest-valued procedure is paid in full and other procedures are paid at 50% when performed in the same session.
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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