CPT code 33755: Systemic-pulmonary shunt, ascending aorta origin2026 Medicare rate & RVUs in Colorado

In Colorado, Medicare pays $1,252.26 for 33755 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 33755 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 33755 covers

This operation creates a systemic-to-pulmonary blood-flow connection from the ascending aorta to the pulmonary artery. A congenital or pediatric cardiac surgeon typically performs it in an operating room as palliation for congenital heart disease with inadequate pulmonary blood flow. The operative anatomy distinguishes this shunt from procedures using the subclavian artery, descending aorta, or a prosthetic central graft.

Report the code when the documented operation creates this connection; the operative report should identify the shunt’s origin and destination and describe the surgical work performed. 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. Modifier 50 is inappropriate. Assistant-at-surgery payment may be made; co-surgeon payment requires supporting documentation, and team surgery is 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.

How Colorado compares for 33755

Across 109 of 109 payment localities, the facility rate for 33755 runs from $1,119.63 in Wisconsin to $1,569.21 in Alaska. Colorado pays $1,252.26. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

33755 rates by state

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

See 33755 in every payment locality

How the 33755 rate is calculated

Each of 33755’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 33755

33755 has a 90-day global period: related visits in that window are included in the surgery payment.

What modifiers do to the payment

When to use modifier 51

Codes related to 33755

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

How 33755 has changed in Colorado

Price 33755 for an earlier date of service

Where the Colorado rate applies

Colorado is a Medicare payment area, not a city. Our Census mapping connects it to 485 cities and communities in Colorado. Some span more than one payment area; confirm with the service ZIP.

• Acres Green
• Aetna Estates
• Aguilar
• Air Force Academy
• Akron
• Alamosa
• Alamosa East
• Allenspark

Browse all communities in Colorado

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