Billing code 33535: Arterial CABGMedicare rate & RVUs in Utah

Reported for coronary artery bypass surgery using three arterial grafts to create three bypasses, rather than a mixed arterial-and-venous graft pattern.

CMS RVU26DEffective Oct 1, 20261 payment locality1.3K Medicare services in 2024

CMS doesn’t publish an office rate for 33535 in Utah.

—Office (non-facility)
$2,220.88Hospital or facility

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

We’ll open 33535 for the payment locality that covers the ZIP.

On this page 9 sections
  1. Rate in Utah
  2. What 33535 covers
  3. By payment locality
  4. How it’s calculated
  5. Payment rules
  6. Similar codes
  7. Related codes
  8. Billing questions
  9. Sources

What 33535 covers

This code represents coronary artery bypass surgery using arterial grafts for three coronary bypasses. A cardiac surgeon typically performs the operation in a hospital operating room. Common arterial conduits include the internal thoracic artery and radial artery. The operative report should identify the conduits used and the coronary targets bypassed so the arterial count and graft type are clear.

Select this level based on three arterial bypasses; use the mixed-conduit code family when the operation also uses venous grafts. The service has a 90-day global period, including the day-before preoperative visit and related postoperative care during that period. 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 for this code. CMS permits payment for an assistant at surgery, but does not permit co-surgeons or team surgery.

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.

33535 in Utah

33535 office and facility rates by payment locality
Payment localityOfficeFacility
UtahUnavailable$2,220.88

How the 33535 rate is calculated

Each of 33535’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.

How the rate is built · 33535

RVUs × geographic indexes × conversion factor

Swap in your local Medicare rate.

Work 43.63Practice expense 14.08Malpractice 10.72

68.4300 adjusted RVUs×$33.4009 conversion factor=$2,285.62

All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.

Payment rules and modifiers for 33535

33535 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 33535

Arterial CABG

RuleCMS valueWhat it means
Global period090Major surgery: the day before, the day of, and 90 days after are included.
Multiple procedures2Standard reduction: highest-valued procedure at 100%, others at 50%.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)2Paid.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.09/0.82/0.09Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 33535

Arterial CABG

90-day global period ends

Dec 30, 2026

Covers Sep 30, 2026 through Dec 30, 2026 (92 days, including the day before surgery).

Visit on Oct 31, 2026

Day 30 of the 90-day post-op period: related follow-up care is included in the surgical payment.

  • 24 Unrelated E/M visit by the same physician
  • 79 Unrelated procedure (starts its own global period)
  • 58 Staged, more extensive, or therapy procedure that was planned
  • 78 Unplanned return to the operating room for a related complication
SurgeryVisit
Sep 23, 2026Jan 10, 2027

Pre-op dayGlobal period

What modifiers do to the payment

Modifier 51 · payment effect

With and without the modifier

33535 without 51 · national facility

$2,285.62

Arterial CABG

33535-51 · Second procedure: 50%

$1,142.81

When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).

When to use modifier 51

33535 compared with similar codes

Compare codes

33535 vs 33534 vs 33536 vs 33512 vs 33519: national Medicare rates

Swap in your local Medicare rate.

  • 33535
    Arterial CABG · 43.63 wRVU
    —
  • 33534
    Arterial CABG · 38.88 wRVU
    —
  • 33536
    CABG · 47.22 wRVU
    —
  • 33512
    Coronary bypass · 42.88 wRVU
    —
  • 33519
    CABG grafts · 10.23 wRVU
    —

How to choose

33534Arterial CABG
Use 33534 for two arterial bypasses; use 33535 when three arterial bypasses are performed.
33536CABG
Use 33536 when four or more arterial bypasses are performed, rather than the three-bypass level in 33535.
33512Coronary bypass
33512 describes three venous bypass grafts. Choose 33535 for three arterial bypasses.
33519CABG grafts
33519 represents a mixed arterial-and-venous CABG pattern; 33535 is for the three-bypass arterial-only level.

33535 billing questions

How is this code distinguished from the two- or four-bypass arterial codes?

Use this code when the operation includes three arterial bypasses. The adjacent arterial levels describe two bypasses and four or more bypasses.

Can this code be used when the surgeon also uses a vein graft?

Use the mixed arterial-and-venous CABG coding structure when both conduit types are used. This code describes the three-bypass arterial-only level.

What should the operative report document?

Document the arterial conduits used, the coronary targets bypassed, and the number of bypasses. These details support the arterial-only classification and three-bypass level.

Should modifier 50 be appended?

No. CMS identifies bilateral adjustment as inappropriate for this code because its descriptor and anatomy are not bilateral.

How does the global period affect postoperative billing?

The 90-day global period includes the day-before preoperative visit and related postoperative care. CMS permits assistant-at-surgery payment, but not co-surgeon or team-surgery payment.

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

Show the CMS file lines behind this rate
RVUs for 33535PPRRVU2026_Oct_nonQPP.csv, line 4,000 (RVU26D)
Geographic factors for UtahGPCI2026.csv, line 104 (RVU26D)

Open CMS sourceHow we calculate rates

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