CPT code 00866: Adrenalectomy anesthesia, extraperitoneal lower abdomen2026 Medicare rate & RVUs in Oregon
Anesthesia for extraperitoneal adrenalectomy, including removal of an adrenal tumor or hormone-producing lesion in the retroperitoneal abdomen.
CMS doesn’t publish an office rate for 00866 in Oregon.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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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 in Oregon
| Payment locality | Office | Facility |
|---|---|---|
| Portland, OR | Unavailable | Unavailable |
| Rest of Oregon | Unavailable | Unavailable |
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
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
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00866 isn’t priced in this setting.
00866 compared with similar codes
Compare codes · National
4 codes, side by side
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.
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
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