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CPT 37217: Carotid stentingMedicare rate & RVUs

Reports retrograde endovascular stenting of an innominate artery or intrathoracic common carotid artery lesion, including angioplasty when performed.

CMS RVU26DEffective Oct 1, 2026109 payment localities285 Medicare services in 2024

Medicare pays $979.31 for 37217 nationally in a facility.

Medicare rate · 37217

Carotid stenting

Swap in your local Medicare rate.

Work RVUs
19.87
Total RVUs
29.32
Global days
090

National rate · 2026

$979.31

Facility setting, before claim adjustments.

See every locality for 37217 →

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

On this page 10 sections
  1. Medicare rate
  2. What 37217 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 37217 covers

This service places an intravascular stent in the innominate artery or intrathoracic portion of the common carotid artery using a retrograde approach. It is typically performed by a vascular surgeon, interventional radiologist, or another appropriately trained endovascular specialist in a hospital setting. Access may be open or percutaneous; the approach proceeds back toward the aortic arch from the target vessel. Angioplasty, when performed, and the procedure’s radiological supervision and interpretation are included.

Report 37217 for the treated vessel and retrograde approach, not for a stent in the cervical carotid artery. The operative report should identify the lesion’s arterial location, access method, direction of treatment, and stent placement. CMS assigns a 90-day global period, including 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. Bilateral reporting with modifier 50 is paid at 150%. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are 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 37217 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

37217 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailable$888.05
Alaska*Unavailable$1,245.49
ArizonaUnavailable$950.58
ArkansasUnavailable$877.13
AtlantaUnavailable$1,017.38
AustinUnavailable$970.11
BakersfieldUnavailable$940.57
Baltimore/Surr. CntysUnavailable$1,040.47
BeaumontUnavailable$954.09
BrazoriaUnavailable$946.40

37217 rates by state

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

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

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
37217 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 37217 rate is calculated

Each of 37217’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 · 37217

RVUs × geographic indexes × conversion factor

Swap in your local Medicare rate.

Work 19.87Practice expense 4.43Malpractice 5.02

29.3200 adjusted RVUs×$33.4009 conversion factor=$979.31

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

Payment rules and modifiers for 37217

37217 has a 90-day global period: related visits in that window are included in the surgery payment.

CMS payment indicators · 37217

Carotid stenting

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)1Bilateral with modifier 50 pays 150% of the fee schedule amount.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
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 · 37217

Carotid stenting

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 50 · payment effect

With and without the modifier

37217 without 50 · national facility

$979.31

Carotid stenting

37217-50 · Bilateral: 150%

$1,468.97

Both sides on one line with modifier 50 are paid at 150% of the fee schedule amount (subject to multiple-procedure rules with other procedures).

When to use modifier 50

37217 compared with similar codes

Compare codes

37217 vs 37218 vs 37215 vs 37216: national Medicare rates

Swap in your local Medicare rate.

  • 37217
    Carotid stenting · 19.87 wRVU
    —
  • 37218
    Carotid stenting · 14.38 wRVU
    —
  • 37215
    · 17.31 wRVU
    —
  • 37216
    · 17.53 wRVU
    —

How to choose

37218Carotid stenting
The target territories overlap, but the approach differs: 37217 is retrograde and 37218 is antegrade.
37215Transcath stent cca w/eps
37215 describes extracranial carotid stenting with embolic protection. Use 37217 for retrograde stenting of the innominate artery or intrathoracic common carotid artery.
37216Transcath stent cca w/o eps
37216 describes extracranial carotid stenting without embolic protection. It is not the code for retrograde treatment of the innominate artery or intrathoracic common carotid artery.

Codes related to 37217

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

Codes related to 37217
CodeHow it relatesNational office range
Same family
37218Carotid stentingStenting in the same arterial territories using the antegrade approach.No office rate
Used instead
37215Transcath stent cca w/epsFor extracranial carotid stenting with embolic protection rather than retrograde proximal-vessel stenting.No office rate
37216Transcath stent cca w/o epsFor extracranial carotid stenting without embolic protection rather than retrograde proximal-vessel stenting.No office rate

37217 billing questions

How does 37217 differ from 37218?

Both address stenting of the innominate artery or intrathoracic common carotid artery. Use 37217 for the retrograde approach and 37218 for the antegrade approach.

Can angioplasty be billed separately with 37217?

Angioplasty performed as part of the stenting service is included. The code also includes the radiological supervision and interpretation for the intervention.

When is 37217 more appropriate than 37215 or 37216?

37217 is for retrograde stenting in the innominate artery or intrathoracic common carotid artery. Codes 37215 and 37216 address stenting in the extracranial carotid artery and distinguish use of embolic protection.

What documentation supports the retrograde approach?

Document the treated artery and lesion location, access method, direction of catheter treatment, and stent placement. The record should make clear that the target is the innominate artery or intrathoracic common carotid artery.

How does Medicare handle bilateral reporting and multiple procedures?

Bilateral reporting with modifier 50 is paid at 150%. When multiple procedures are performed in the same session, the highest-valued procedure is paid in full and the others are subject to the standard 50% reduction.

May an assistant or co-surgeon be reported?

Assistant-at-surgery payment requires documentation of medical necessity. Co-surgeons and team surgery are not permitted under the listed CMS rules.

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 37217PPRRVU2026_Oct_nonQPP.csv, line 4,597 (RVU26D)

Open CMS sourceHow we calculate rates

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