No office rate
Both codes represent venous grafting with arterial CABG. Choose 33517 for one venous graft and 33518 for two.
On this page
CMS RVU26D · Effective 2026-10-01
33518 CABG grafts Medicare reimbursement rates in Connecticut
Add-on reporting for coronary bypass surgery using two venous grafts together with one or more arterial grafts. Compare 33518 office and facility rates across CMS payment localities in Connecticut.
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 33518 in Connecticut?
Connecticut has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
No supported rate
Facility setting
$396.30
1 of 1 localities have a supported rate.
Payment area: Connecticut
One mapped payment locality.
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 33518: Coronary bypass with two venous grafts
Add-on reporting for coronary bypass surgery using two venous grafts together with one or more arterial grafts.
This add-on represents the venous-graft portion of coronary artery bypass surgery when the operation also uses an arterial graft. A cardiac surgeon typically performs the bypass in a hospital operating room, using venous conduit such as saphenous vein to route blood around coronary artery blockages alongside an arterial conduit such as an internal mammary artery. The code is selected for two venous grafts; it does not represent two total grafts or the arterial graft count.
Report 33518 with the primary arterial CABG code that reflects the number of arterial grafts. The operative report should identify the arterial and venous conduits and document the number of each used. As an add-on, 33518 is billed only with a primary procedure and is paid within that procedure’s global period; it is not a stand-alone CABG report. The venous graft count determines this add-on level, while the arterial graft count determines the primary code.
CMS billing rules for 33518
- Global period
- Add-on code: billed only together with a primary procedure and paid within that procedure's global period.
Where the value comes from
- Work RVU7.73 · 69%
- Practice expense (office) RVU1.55 · 14%
- Malpractice RVU1.91 · 17%
32.7K
Medicare services in 2024 · #939 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.
33518 compared with similar codes
Office rates for Connecticut, from the same CMS release.
No office rate
Both are mixed arterial-and-venous CABG add-ons. Choose 33519 when three venous grafts are documented rather than two.
No office rate
33511 represents two venous grafts without the mixed arterial-and-venous coding structure. Use 33518 when arterial grafting is also performed and the primary arterial CABG code is reported.
No office rate
33533 is the primary CABG code for one arterial graft. It does not capture the two venous grafts represented by add-on code 33518.
Compare 33518 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.
1 of 1 payment localities
Connecticut →
Office / nonfacility
Unavailable
Facility
$396.30
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How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for 33518 in Connecticut.
PPRRVU2026_Oct_nonQPP.csv
3,990
- Code
- 33518
- Physician work
- 7.73
- Practice expense
- 1.55
- Malpractice
- 1.91
GPCI2026.csv
38
- Locality
- Connecticut
- Physician work
- 1.020
- Practice expense
- 1.077
- Malpractice
- 1.210
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 7.73 | × 1.020 | 7.8846 |
| Practice expense | 1.55 | × 1.077 | 1.6693 |
| Malpractice | 1.91 | × 1.210 | 2.3111 |
| Total RVUs | 11.8651 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Connecticut$396.30
Explore RVUs, geographic factors and the full formula
Facility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 7.73 | 1.02 |
| Practice expense | 1.55 | 1.077 |
| Malpractice | 1.91 | 1.21 |
(7.73 × 1.02 + 1.55 × 1.077 + 1.91 × 1.21) × $33.4009 = $396.30
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
33518 billing questions
Does 33518 mean two total bypass grafts?
No. It represents two venous grafts used with arterial grafting. The primary arterial CABG code reflects the arterial graft count.
Which primary code is reported with 33518?
Report the arterial CABG code for the number of arterial grafts, such as 33533 for one arterial graft or 33534 for two.
How does 33518 differ from 33511?
33518 is for two venous grafts used with arterial grafting. 33511 represents two venous grafts without the arterial-graft combination represented by 33518.
What documentation supports the two-graft level?
The operative report should identify the graft types and document two venous grafts, along with the arterial grafting that supports the primary CABG code.
Can 33518 be reported by itself?
No. It is an add-on code reported with the primary arterial CABG procedure and is paid within that procedure’s global period.
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.
3,98733514,,Cabg vein five,A,,46.88,15.27,NA,15.27,,11.27,73.42,73.42,0,090,0.09,0.84,0.07,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,98833516,,Cabg vein six or more,A,,48.52,15.86,NA,15.86,,11.66,76.04,76.04,0,090,0.09,0.84,0.07,2,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,98933517,,Cabg artery-vein single,A,,3.52,0.71,NA,0.71,,0.87,5.10,5.10,0,ZZZ,0.00,0.00,0.00,0,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,99033518,,Cabg artery-vein two,A,,7.73,1.55,NA,1.55,,1.91,11.19,11.19,0,ZZZ,0.00,0.00,0.00,0,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,99133519,,Cabg artery-vein three,A,,10.23,2.04,NA,2.04,,2.52,14.79,14.79,0,ZZZ,0.00,0.00,0.00,0,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3,9923351F,,Neg scrn dep symp by deptool,I,,0.00,0.00,,0.00,,0.00,0.00,0.00,9,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
3,99333521,,Cabg artery-vein four,A,,12.28,2.45,NA,2.45,,3.03,17.76,17.76,0,ZZZ,0.00,0.00,0.00,0,0,2,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
3501112,CA,70,YUBA CITY,1.017,1.096,0.536
3601112,CA,75,REST OF CALIFORNIA,1.017,1.096,0.536
3704112,CO,01,COLORADO,1.012,1.064,0.781
3813102,CT,00,CONNECTICUT,1.020,1.077,1.210
3912202,DC,01,DC + MD/VA SUBURBS,1.054,1.178,1.113
4012102,DE,01,DELAWARE,1.005,0.988,0.899
4109102,FL,03,FORT LAUDERDALE,1.000,1.013,1.808