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CPT code 00866: Adrenalectomy anesthesia, extraperitoneal lower abdomen2026 Medicare rate & RVUs

Anesthesia for extraperitoneal adrenalectomy, including removal of an adrenal tumor or hormone-producing lesion in the retroperitoneal abdomen.

CMS RVU26DEffective Oct 1, 2026109 payment localities2.8K Medicare services in 2024

Medicare rate · 00866

Adrenalectomy anesthesia, extraperitoneal lower abdomen

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 00866 →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 00866 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 00866 covers

This code represents anesthesia for extraperitoneal removal of an adrenal gland, often to treat an adrenal tumor or a hormone-producing lesion such as a pheochromocytoma. The operation may be performed by a urologic, endocrine, or general surgeon in an operating room. The anesthesia professional manages the anesthetic and perioperative monitoring during surgery in the retroperitoneal adrenal region.

Report 00866 for anesthesia for extraperitoneal adrenalectomy, rather than 00862 for a renal procedure, 00864 for total cystectomy, 00865 for radical prostatectomy, or 00868 for kidney transplantation. The operative record should identify the adrenalectomy and its approach; the anesthesia record should support the service and document anesthesia time. Medicare payment is (10 base units + time units) × the locality’s anesthesia conversion factor. Time is reported in minutes and converted to 15-minute units, computed to one decimal place; it starts when the anesthesia practitioner begins preparing the patient for anesthesia and ends when the practitioner is no longer in personal attendance and the patient can safely be placed under postoperative care.

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 00866 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

00866 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

00866 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
00866 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 00866 rate is calculated

Each of 00866’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 · 00866

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 00866

00866 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 · 00866

Which rate does Medicare pay?

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

POS 11 · non-facility rate · national

—

00866 isn’t priced in this setting.

00866 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • 00866

    Adrenalectomy anesthesia, extraperitoneal lower abdomen0 wRVU

    Not priced

  • 00860

    Lower abdominal anesthesia, extraperitoneal, unspecified procedure0 wRVU

    Not priced

  • 00862

    Renal surgery anesthesia, extraperitoneal, lower abdomen0 wRVU

    Not priced

  • 00868

    Renal transplant anesthesia, extraperitoneal procedure0 wRVU

    Not priced

How to choose

00860Lower abdominal anesthesiaExtraperitoneal, unspecified procedure
00860 covers other extraperitoneal lower-abdominal procedures not represented by a more specific procedure code. Choose 00866 when the operation is an extraperitoneal adrenalectomy.
00862Renal surgery anesthesiaExtraperitoneal, lower abdomen
00862 is for renal procedures. Extraperitoneal adrenalectomy is associated with 00866.
00868Renal transplant anesthesiaExtraperitoneal procedure
00868 is for kidney transplantation. It is not the code for removal of an adrenal gland.

Codes related to 00866

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

Codes related to 00866
CodeHow it relatesNational office range
Same family
00862Renal surgery anesthesia, extraperitoneal, lower abdomenAnesthesia for a renal procedure in the extraperitoneal lower-abdominal series.No office rate
00864Cystectomy anesthesia, extraperitoneal lower abdomenAnesthesia for total cystectomy, a different organ-specific operation in the series.No office rate
00865Prostatectomy anesthesia, extraperitoneal lower abdomenAnesthesia for radical prostatectomy, rather than adrenalectomy.No office rate
00868Renal transplant anesthesia, extraperitoneal procedureAnesthesia for kidney transplantation, distinct from adrenal gland removal.No office rate

00866 billing questions

When should 00866 be chosen instead of 00862?

Use 00866 for anesthesia for extraperitoneal adrenalectomy. Use 00862 for anesthesia for a renal procedure.

Does 00866 represent the surgeon’s adrenalectomy service?

No. It represents the anesthesia service; the surgeon reports the adrenal operation under the applicable surgical code.

What should the operative and anesthesia records show?

The operative record should identify the adrenalectomy and its approach. The anesthesia record should support that anesthesia was provided for that operation and document anesthesia time.

How does Medicare calculate units for 00866?

The code has 10 base units. Medicare adds the time units and multiplies the total by the anesthesia conversion factor for the payment locality.

How does Medicare pay when an anesthesiologist medically directs a CRNA?

Medicare pays each of them 50% of the allowance for the personally performed service.

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

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