CPT code 33774: Atrial baffle repair, transposition of great arteries2026 Medicare rate & RVUs in Iowa

In Iowa, Medicare pays $1,511.37 for 33774 in a facility. There’s no office rate.

Check a contract rate as a % of Medicare · 33774 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 33774 covers

A congenital cardiac surgeon creates an intra-atrial baffle to redirect systemic and pulmonary venous blood in a patient with transposition of the great arteries. This atrial-switch approach includes procedures such as the Mustard or Senning operation; it differs from an arterial switch, which reconstructs the great arteries. The operation is performed as open-heart surgery in a hospital setting.

Report 33774 when the atrial baffle repair is performed without the additional procedures described by related codes for pulmonary artery band removal, ventricular septal defect closure, or subpulmonic obstruction repair. The operative report should establish the transposition anatomy and document the baffle reconstruction and any additional cardiac work. 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 multiple procedure reduction. Modifier 50 is inappropriate. Assistant-at-surgery payment may be available; 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 Iowa compares for 33774

Across 109 of 109 payment localities, the facility rate for 33774 runs from $1,505.75 in Wisconsin to $2,129.63 in Alaska. Iowa pays $1,511.37. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

33774 rates by state

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

See 33774 in every payment locality

How the 33774 rate is calculated

Each of 33774’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 33774

33774 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 33774

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

How 33774 has changed in Iowa

Price 33774 for an earlier date of service

Where the Iowa rate applies

Iowa is a Medicare payment area, not a city. Our Census mapping connects it to 1026 cities and communities in Iowa. Some span more than one payment area; confirm with the service ZIP.

• Ackley
• Ackworth
• Adair
• Adel
• Afton
• Agency
• Ainsworth
• Akron

Browse all communities in Iowa

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