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CPT code 33863: Aortic graft, valve conduit, coronary reconstruction2026 Medicare rate & RVUs

Reports ascending aortic replacement using a valve-containing composite graft with coronary reconstruction, as in a Bentall operation for aortic root disease.

CMS RVU26DEffective Oct 1, 2026109 payment localities3.5K Medicare services in 2024

Medicare pays $2,905.88 for 33863 nationally in a facility.

Medicare rate · 33863

Aortic graft, valve conduit, coronary reconstruction

Office or facility?

Work RVUs
57.32
Total RVUs
87.00
Global days
090

National rate · 2026

$2,905.88

Facility setting, before claim adjustments.

See every locality for 33863 →Billed by an NP, PA or therapist? →

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

Your location

Medicare pays by the payment locality where the service is performed.

On this page 10 sections
  1. Medicare rate
  2. What 33863 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What 33863 covers

This operation replaces the diseased ascending aorta with a composite conduit that includes a prosthetic aortic valve, then reconnects the coronary arteries to the graft. Cardiac surgeons commonly perform it in a hospital operating room for aortic root or ascending aortic disease when the valve and aorta are addressed together. The operative report should establish the composite valve graft and coronary reconstruction; a simple aortic graft or a valve replacement without this reconstruction describes a different service.

Report the code for the operation documented, including the graft and coronary work; do not separately report the valve replacement that is built into this composite procedure. The 90-day global period includes the day-before preoperative visit and related postoperative care. For multiple procedures in one session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% reduction. Modifier 50 is inappropriate for this anatomy. 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.

Where 33863 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

33863 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$2,636.02
AlaskaUnavailable$3,684.83
ArizonaUnavailable$2,821.78
ArkansasUnavailable$2,603.63
Atlanta, GAUnavailable$3,014.86
Austin, TXUnavailable$2,885.97
Bakersfield, CAUnavailable$2,807.42
Baltimore area, MDUnavailable$3,086.33
Beaumont, TXUnavailable$2,825.63
Brazoria, TXUnavailable$2,812.62

33863 rates by state

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

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Explore a state

Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
33863 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

How the 33863 rate is calculated

Each of 33863’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 · 33863

RVUs × geographic indexes × conversion factor

Office or facility?

Work57.32

57.32 RVUs× 1.000 GPCI

Practice expense15.54

15.54 RVUs× 1.000 GPCI

Malpractice14.14

14.14 RVUs× 1.000 GPCI

Adjusted RVUs

87.0000

Conversion factor

$33.4009

Medicare rate

$2,905.88

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

Payment rules and modifiers for 33863

33863 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 33863

Aortic graft, valve conduit, coronary reconstruction

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)1Permitted with supporting documentation.
Team surgery (66)0Not permitted.
Professional/technical0Physician service: no professional/technical split.
Split (54/55/56)0.09/0.84/0.07Share of the payment for pre-op, the procedure itself, and post-op care.

Global surgery period · 33863

Aortic graft, valve conduit, coronary reconstruction

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.

  • 24Unrelated E/M visit by the same physician
  • 79Unrelated procedure (starts its own global period)
  • 58Staged, more extensive, or therapy procedure that was planned
  • 78Unplanned 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

33863 without 51 · national facility

$2,905.88

Aortic graft, valve conduit, coronary reconstruction

33863-51 · Second procedure: 50%

$1,452.94

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

33863 compared with similar codes

Compare codes · National

5 codes, side by side

Office or facility?

  • 33863

    Aortic graft, valve conduit, coronary reconstruction57.32 wRVU

    Not priced

  • 33858

    Aortic graft, ascending aorta, dissection61.82 wRVU

    Not priced

  • 33859

    Aortic graft, non-dissection disease44 wRVU

    Not priced

  • 33864

    Aortic graft, with root replacement and CABG58.58 wRVU

    Not priced

  • 33866

    Aortic graft, hemiarch extension17.31 wRVU

    Not priced

How to choose

33858Aortic graftAscending aorta, dissection
This code describes a composite valve graft with coronary reconstruction. Code 33858 is for ascending aortic replacement for dissection without that combination.
33859Aortic graftNon-dissection disease
Use this code for the composite valve conduit and coronary reconstruction. Code 33859 describes ascending aortic replacement for disease other than dissection without those features.
33864Aortic graftWith root replacement and CABG
Both codes involve a composite valve graft and coronary reconstruction; code 33864 is distinguished by additional operative features documented in the procedure.
33866Aortic graftHemiarch extension
This code covers composite valve-graft replacement with coronary reconstruction. Code 33866 is for an operation involving an aortic hemiarch graft.

Codes related to 33863

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

Codes related to 33863
CodeHow it relatesNational office range
Used instead
33858Aortic graft, ascending aorta, dissectionAscending aortic replacement for dissection without the composite valve conduit and coronary reconstruction.No office rate
33859Aortic graft, non-dissection diseaseAscending aortic replacement for other disease without the composite valve conduit and coronary reconstruction.No office rate
33866Aortic graft, hemiarch extensionUsed for ascending aortic replacement involving a hemiarch graft.No office rate
Same family
33864Aortic graft, with root replacement and CABGRelated composite valve-graft procedure distinguished by additional operative features.No office rate

33863 billing questions

When is this code chosen over an ascending aortic graft without a valve conduit?

Use this code when the operation uses a composite graft that includes a prosthetic valve and reconstructs the coronary connections. A graft replacement without that combined valve-and-coronary work points to a different code.

Can the aortic valve replacement be reported separately?

The valve replacement is part of the composite conduit service. Do not separately report it as an additional valve procedure for the same work.

What operative documentation supports this code?

The report should identify the composite valve-containing graft, the ascending aortic replacement, and coronary reconstruction or reimplantation. It should also describe the operative extent and any additional procedures performed.

Can an assistant or co-surgeon be reported?

CMS permits assistant-at-surgery payment for this service. Co-surgeon payment requires supporting documentation; team surgery is not permitted.

How does the global period affect postoperative services?

The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care.

Should modifier 50 be used for this operation?

No. The anatomy and descriptor make a bilateral adjustment inappropriate.

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 33863PPRRVU2026_Oct_nonQPP.csv, line 4,092 (RVU26D)

Open CMS sourceHow we calculate rates

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