CPT code 00844: Abdominoperineal anesthesia, combined abdominal and perineal approach2026 Medicare rate & RVUs in New Jersey
Anesthesia for abdominoperineal resection covers combined abdominal and perineal removal of the rectum and anus with creation of a permanent colostomy.
CMS doesn’t publish an office rate for 00844 in New Jersey.
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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On this page 9 sections
What 00844 covers
This service covers anesthesia for an abdominoperineal resection. The operation removes the rectum and anus through combined abdominal and perineal approaches and ends with a permanent colostomy. An anesthesia practitioner, such as an anesthesiologist or CRNA, provides and reports the service for this lower-abdominal intraperitoneal operation.
Choose 00844 for this resection rather than 00840 for other lower-abdominal intraperitoneal procedures, 00846 for radical hysterectomy, or 00848 for pelvic exenteration. The operative report should identify the resection and both approaches; the anesthesia record should support the service and its start and stop times. This code has 7 base units. Medicare payment is the sum of base units and time units multiplied by the locality’s anesthesia conversion factor. Time is reported in minutes, converted to 15-minute units to one decimal place, from preparation for anesthesia until the practitioner is no longer in personal attendance and the patient can safely be placed under postoperative care; the conversion factor varies by locality.
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 00844 pays more and less in New Jersey
| Payment locality | Office | Facility |
|---|---|---|
| Northern New Jersey | Unavailable | Unavailable |
| Rest of New Jersey | Unavailable | Unavailable |
How the 00844 rate is calculated
Each of 00844’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 · 00844
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 00844
00844 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 · 00844
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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00844 isn’t priced in this setting.
00844 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 00840Intraperitoneal anesthesiaLower abdomen, other procedures
- 00840 covers other lower-abdominal intraperitoneal procedures. Choose 00844 when the operation is an abdominoperineal resection through abdominal and perineal approaches.
- 00846Radical hysterectomy anesthesiaIntraperitoneal lower abdominal procedure
- 00846 applies to radical hysterectomy anesthesia. It is not the category for resection of the rectum and anus with a permanent colostomy.
- 00848Pelvic exenterationIntraperitoneal pelvic procedure
- 00848 applies to pelvic exenteration. Use 00844 for abdominoperineal resection when the operative report supports that procedure.
00844 billing questions
When should I choose 00844 instead of 00840?
Use 00844 for abdominoperineal resection involving combined abdominal and perineal removal of the rectum and anus with a permanent colostomy. Code 00840 covers other lower-abdominal intraperitoneal procedures.
Does any operation that creates a colostomy qualify for 00844?
No. The operation must be an abdominoperineal resection using combined abdominal and perineal approaches; a colostomy alone does not establish that procedure.
What should the records show?
The operative report should identify the rectum and anus resection, both approaches, and the permanent colostomy. The anesthesia record should support the anesthesia service and its time.
How are 00844 units used in Medicare payment?
The code has 7 base units. Medicare adds time units, calculated from anesthesia minutes in 15-minute units to one decimal place, then multiplies the total by the locality’s anesthesia conversion factor.
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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