FeeBase
Log inGet started
Menu

CPT code 01844: Shunt anesthesia, creation or revision2026 Medicare rate & RVUs

Anesthesia for creating or revising an upper-extremity vascular shunt, commonly an arteriovenous access used for hemodialysis.

CMS RVU26DEffective Oct 1, 2026109 payment localities98.2K Medicare services in 2024

Medicare rate · 01844

Shunt anesthesia, creation or revision

Office or facility?

Work RVUs
0
Total RVUs
0.00
Global days
XXX

National rate · 2026

—

Not priced in the facility setting.

See every locality for 01844 →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 01844 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 01844 covers

This service covers anesthesia for surgery that creates or revises a vascular shunt, most often an arteriovenous fistula or graft used for hemodialysis access. An anesthesia practitioner provides and reports the service for the access operation, commonly in a hospital or ambulatory surgical setting. The operation may establish a new connection or address a problem with an existing shunt.

Choose 01844 for the shunt operation itself, rather than a separate artery, vein, or embolization procedure in the forearm, wrist, or hand. The operative report should identify shunt creation or revision and the access site; the anesthesia record should support the service and its start and end times. This code has 6 base units; Medicare payment is (base units + time units) × the locality’s anesthesia conversion factor. Time is counted in minutes from anesthesia preparation until personal attendance ends and the patient can safely enter postoperative care, converted to 15-minute units to one decimal place.

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 01844 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

01844 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailableUnavailable
AlaskaUnavailableUnavailable
ArizonaUnavailableUnavailable
ArkansasUnavailableUnavailable
Atlanta, GAUnavailableUnavailable
Austin, TXUnavailableUnavailable
Bakersfield, CAUnavailableUnavailable
Baltimore area, MDUnavailableUnavailable
Beaumont, TXUnavailableUnavailable
Brazoria, TXUnavailableUnavailable

01844 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
01844 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 01844 rate is calculated

Each of 01844’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 · 01844

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.00

0.00 RVUs× 1.000 GPCI

Practice expense0.00

0.00 RVUs× 1.000 GPCI

Malpractice0.00

0.00 RVUs× 1.000 GPCI

Adjusted RVUs

0.0000

Conversion factor

$33.4009

Medicare rate

$0.00

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

Payment rules and modifiers for 01844

01844 has no global surgery period, no multiple-procedure, bilateral or assistant-at-surgery adjustment, and no professional/technical split. What changes the payment is where the service happens: the place of service on the claim decides whether Medicare pays the office or the facility rate.

Place of service · 01844

Which rate does Medicare pay?

The POS code on the claim line (CMS-1500 box 24B).

POS 11 · non-facility rate · national

—

01844 isn’t priced in this setting.

01844 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • 01844

    Shunt anesthesia, creation or revision0 wRVU

    Not priced

  • 01840

    Arterial procedure anesthesia, forearm, wrist, or hand0 wRVU

    Not priced

  • 01842

    Embolectomy anesthesia, forearm, wrist, or hand arteries0 wRVU

    Not priced

  • 01850

    Vein procedure anesthesia, forearm, wrist, or hand0 wRVU

    Not priced

How to choose

01840Arterial procedure anesthesiaForearm, wrist, or hand
Choose 01844 for creation or revision of a vascular shunt. Choose 01840 for an arterial procedure in the forearm, wrist, or hand that is not shunt surgery.
01842Embolectomy anesthesiaForearm, wrist, or hand arteries
01842 describes anesthesia for an embolization procedure involving an artery of the forearm, wrist, or hand; 01844 is for vascular shunt creation or revision.
01850Vein procedure anesthesiaForearm, wrist, or hand
01850 covers other vein procedures in the forearm, wrist, or hand. Use 01844 when the operation creates or revises a vascular shunt.

Codes related to 01844

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

Codes related to 01844
CodeHow it relatesNational office range
Often billed with
36821Dialysis access, direct artery-to-vein connectionSurgical code for direct arteriovenous access creation, commonly paired with anesthesia for shunt surgery.No office rate
36830AV graft creation, nonautologous graftSurgical code for arteriovenous access creation using a nonautogenous graft.No office rate
36832Fistula revision, open, without thrombectomySurgical code for open revision of an arteriovenous fistula without thrombectomy.No office rate
Used instead
01840Arterial procedure anesthesia, forearm, wrist, or handFor other arterial procedures in the forearm, wrist, or hand rather than shunt creation or revision.No office rate
01850Vein procedure anesthesia, forearm, wrist, or handFor vein procedures in the forearm, wrist, or hand that are not vascular shunt operations.No office rate

01844 billing questions

When should I choose 01844 instead of 01840?

Use 01844 when the operation creates or revises a vascular shunt, such as an arteriovenous dialysis access. Code 01840 is for other arterial procedures in the forearm, wrist, or hand.

Is the surgeon’s shunt procedure reported separately?

Yes. The surgeon reports the operative shunt creation or revision under the applicable surgical CPT code; 01844 represents the anesthesia service.

How are units calculated for 01844?

The code has 6 base units. Medicare adds time units, calculated from anesthesia minutes in 15-minute units to one decimal place, then applies the locality’s anesthesia conversion factor.

What should the records show?

The operative report should establish that the procedure created or revised a vascular shunt and identify the access site. The anesthesia record should support the practitioner’s service and the documented anesthesia start and end times.

Can 01844 be used for a standalone artery or vein procedure?

No. The operation must involve creation or revision of a vascular shunt; a separate arterial or venous procedure belongs under the anesthesia code describing that procedure type.

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

Did this answer your question about what 01844 pays?

Tell us what you were actually trying to work out. We’ll answer you directly, or build the page that does.

Fee sheets · Coming soon

Put 01844 and the rest of your codes on one sheet

Your codes at your locality, with payer contracts beside Medicare.

Join the waitlist