CPT code 33853: Aortic arch repair, with bypass2026 Medicare rate & RVUs in Utah

In Utah, Medicare pays $1,678.36 for 33853 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 33853 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 33853 covers

A cardiothoracic surgeon reconstructs an underdeveloped aortic arch using cardiopulmonary bypass. The procedure is typically performed in a hospital operating room for congenital heart disease, including in infants and children when the arch is too small to provide adequate blood flow. The operative report should establish the arch abnormality and describe the reconstruction and use of bypass.

Select this code when the surgeon repairs the hypoplastic arch with bypass; the corresponding repair without bypass is a different code. The bypass approach is part of the service represented here, rather than a reason to separately report the no-bypass sibling. CMS assigns a 90-day global period, including the day-before preoperative visit and related postoperative care during that period. When multiple procedures are performed in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. Assistant-at-surgery payment may be made; co-surgeon payment requires supporting documentation. Team surgery is not permitted, and modifier 50 is inappropriate.

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 Utah compares for 33853

Across 109 of 109 payment localities, the facility rate for 33853 runs from $1,528.18 in Wisconsin to $2,165.68 in Alaska. Utah pays $1,678.36. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

33853 rates by state

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

See 33853 in every payment locality

How the 33853 rate is calculated

Each of 33853’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 33853

33853 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 33853

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

How 33853 has changed in Utah

Price 33853 for an earlier date of service

Where the Utah rate applies

Utah is a Medicare payment area, not a city. Our Census mapping connects it to 334 cities and communities in Utah. Some span more than one payment area; confirm with the service ZIP.

• Alpine
• Alta
• Altamont
• Alton
• Amalga
• American Fork
• Aneth
• Annabella

Browse all communities in Utah

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