CPT code 33521: CABG grafting, four venous grafts2026 Medicare rate & RVUs in Connecticut

In Connecticut, Medicare pays $628.96 for 33521 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 33521 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 33521 covers

This add-on code represents the venous-graft portion of coronary artery bypass grafting that also uses an arterial conduit. A cardiac surgeon may use saphenous vein for the venous grafts and an internal thoracic artery or another arterial conduit for the arterial grafting. The service is performed during the same open-heart operation, typically in a hospital operating room.

Select the code by the number of venous grafts in the combined procedure: this level represents four. Report it only with the appropriate primary arterial CABG code, selected according to the arterial graft count, such as 33533–33536. The operative report should identify the arterial and venous conduits and support the number of grafts placed. Under the CMS rule, this add-on is billed only with a primary procedure and is paid within that procedure’s global period.

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.

How Connecticut compares for 33521

Across 109 of 109 payment localities, the facility rate for 33521 runs from $519.73 in Wisconsin to $758.16 in Alaska. Connecticut pays $628.96. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

33521 rates by state

Office rate range in each state. Select a state to see its payment localities.

See 33521 in every payment locality

How the 33521 rate is calculated

Each of 33521’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.

Payment rules and modifiers for 33521

The CMS indicators that decide how 33521 is paid alongside other services.

What modifiers do to the payment

When to use modifier 80

Codes related to 33521

Related codes aren’t interchangeable: bill the code that matches the service performed.

How 33521 has changed in Connecticut

Price 33521 for an earlier date of service

Where the Connecticut rate applies

Connecticut is a Medicare payment area, not a city. Our Census mapping connects it to 215 cities and communities in Connecticut. Some span more than one payment area; confirm with the service ZIP.

• Ansonia
• Ball Pond
• Baltic
• Bantam
• Bethel
• Bethlehem Village
• Bigelow Corners
• Blue Hills

Browse all communities in Connecticut

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

Open CMS sourceHow we calculate rates