Billing code 11471: Hidradenitis excisionMedicare rate & RVUs in Alaska
Reports complex surgical removal of hidradenitis-affected skin and underlying tissue in the perianal, perineal, or umbilical region.
Medicare pays $677.09 for 11471 in the office in Alaska (Alaska*). Which amount applies depends on the service address.
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 9 sections
What 11471 covers
This code is for complex excision of skin and subcutaneous tissue affected by hidradenitis in the perianal, perineal, or umbilical region. Surgeons, including dermatologic and general surgeons, may perform the procedure in an operating room or an outpatient surgical setting to remove diseased tissue in these specified locations. The code distinguishes this service from the simple or intermediate excision service for the same regions.
Select the code based on the anatomic site and the complex nature of the procedure, and document the involved location, extent of excision, and operative details supporting complexity. The code includes a 90-day global period, covering the day-before preoperative visit and 90 days of related postoperative care. When multiple procedures occur in the same session, the highest-valued procedure is paid in full and other procedures are subject to the standard 50% multiple-procedure reduction. Modifier 50 is inappropriate for this code. 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.
11471 in Alaska*
| Payment locality | Office | Facility |
|---|---|---|
| Alaska* | $677.09 | $406.74 |
How the 11471 rate is calculated
Each of 11471’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 · 11471
RVUs × geographic indexes × conversion factor
Work4.77
4.77 RVUs× 1.000 GPCI
Practice expense11.84
11.84 RVUs× 1.000 GPCI
Malpractice0.92
0.92 RVUs× 1.000 GPCI
Adjusted RVUs
17.5300
Conversion factor
$33.4009
Medicare rate
$585.52
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 11471
11471 has a 90-day global period: related visits in that window are included in the surgery payment.
CMS payment indicators · 11471
Hidradenitis excision
| Rule | CMS value | What it means |
|---|---|---|
| Global period | 090 | Major surgery: the day before, the day of, and 90 days after are included. |
| Multiple procedures | 2 | Standard reduction: highest-valued procedure at 100%, others at 50%. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 0 | Not paid without supporting documentation. |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
| Split (54/55/56) | 0.10/0.71/0.19 | Share of the payment for pre-op, the procedure itself, and post-op care. |
Global surgery period · 11471
Hidradenitis excision
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.
Pre-op dayGlobal period
What modifiers do to the payment
Modifier 51 · payment effect
With and without the modifier
11471 without 51 · national office
$585.52
Hidradenitis excision
11471-51 · Second procedure: 50%
$292.76
When this isn’t the highest-valued procedure in the session, Medicare pays 50% of its fee schedule amount (the highest is paid at 100%).
11471 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- 11470Hidradenitis excision
- Both codes cover perianal, perineal, or umbilical hidradenitis excision; choose 11471 for the complex service and 11470 for simple or intermediate excision.
- 11463Hidradenitis excision
- Both describe complex hidradenitis excision, but 11463 is for the inguinal region; 11471 is for perianal, perineal, or umbilical sites.
- 11451Axillary hidradenitis excision
- 11451 is the complex hidradenitis excision code for the axillary region. The anatomic site, not just procedural complexity, separates it from 11471.
11471 billing questions
When should 11471 be selected instead of 11470?
Use 11471 for complex excision in the perianal, perineal, or umbilical region. Use 11470 when the excision in those regions is simple or intermediate.
How does the site affect code selection?
11471 is for hidradenitis excision in the perianal, perineal, or umbilical region. Axillary and inguinal excisions are represented by different codes.
Is closure separately reported?
The code distinguishes complex excision from the simple or intermediate service for these sites. Do not separately report the closure as though it were the simple or intermediate service.
Can modifier 50 be used for bilateral disease?
No. CMS identifies bilateral adjustment as inappropriate for this code; modifier 50 should not be used.
What documentation supports reporting 11471?
Document the perianal, perineal, or umbilical site, the hidradenitis-related tissue removed, and operative details supporting the complex service.
What assistant-surgeon and global rules apply?
The 90-day global period includes the day-before preoperative visit and 90 days of related postoperative care. Assistant-at-surgery payment requires documented medical necessity; co-surgeons and team surgery are not permitted.
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
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