Q4162
No office rateWndex flw, bioskn flw, 0.5cc
Q4162 identifies Woundex or Bioskin FLW by volume; Q4163 identifies Woundex or Bioskin by square centimeter. Use the code matching the product and unit supplied.
On this page
CMS RVU26D · Effective 2026-10-01
Q4163 Skin substitute Medicare reimbursement rates in Alaska
Reports Woundex or Bioskin wound product by square centimeter when supplied with a qualifying primary wound procedure. Compare Q4163 office and facility rates across CMS payment localities in Alaska.
Amounts below use the non-QP conversion factor for participating physicians. These are base physician payments before claim-level adjustments, not patient costs or total hospital charges.
What does Medicare pay for Q4163 in Alaska?
Alaska has 1 payment locality in this comparison. Use the service location to choose the applicable amount. These are the supported base rates for the payment area shown below, using the same CMS release.
Office / nonfacility
$135.53
1 of 1 localities have a supported rate.
Payment area: Alaska*
One mapped payment locality.
Facility setting
No supported rate
These are locality ranges, not averages or address-specific quotes. A facility-setting amount covers the physician service; it does not include a hospital’s separate bill. Choose a locality below to inspect its calculation, compare other payment areas, or price a percentage of Medicare.
Skin substitute product
About Q4163: Woundex or Bioskin wound product
Reports Woundex or Bioskin wound product by square centimeter when supplied with a qualifying primary wound procedure.
Q4163 identifies Woundex or Bioskin product used for wound coverage, measured by the area supplied. A wound-care clinician, surgeon, or podiatrist may use it during treatment of a wound in an outpatient wound clinic, physician office, or hospital outpatient department. The code represents the product, not wound preparation or placement itself; those services are represented by the applicable primary procedure.
Report units based on the square-centimeter quantity used, and document the product, treated wound area, and amount applied in the procedure record. CMS classifies Q4163 as an add-on code, so it must accompany a primary procedure and its payment falls within that procedure’s global period. CMS also classifies it as technical-component-only; a separate code covers interpretation.
CMS billing rules for Q4163
- Global period
- Add-on code: billed only together with a primary procedure and paid within that procedure's global period.
- Professional and technical components
- Technical-component-only code: a separate code covers interpretation.
Where the value comes from
- Work RVU0.00 · 0%
- Practice expense (office) RVU3.81 · 100%
- Malpractice RVU0.00 · 0%
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.
Q4163 compared with similar codes
Office rates for Alaska, from the same CMS release.
$135.53
Q4164 identifies Helicoll rather than Woundex or Bioskin. Both use a square-centimeter unit, so the product supplied distinguishes the codes.
$135.53
Q4158 identifies Kerecis Omega3, while Q4163 identifies Woundex or Bioskin. Both are product-specific wound codes measured by square centimeter.
Compare Q4163 by payment locality
Find the payment area for your service address, then open its rate page for calculation inputs, release history and the percentage-of-Medicare tool. A city may cross payment-area boundaries; the ZIP lookup above helps resolve the location.
1 of 1 payment localities
Alaska* →
Office / nonfacility
$135.53
Facility
Unavailable
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How this local rate is calculated
Each RVU component is multiplied by its own geographic practice cost index (GPCI). The three adjusted components are added, then multiplied by the conversion factor. These are the inputs used for Q4163 in Alaska*.
PPRRVU2026_Oct_nonQPP.csv
18,256
- Code
- Q4163
- Physician work
- 0.00
- Practice expense
- 3.81
- Malpractice
- 0.00
GPCI2026.csv
5
- Locality
- Alaska*
- Physician work
- 1.500
- Practice expense
- 1.065
- Malpractice
- 0.551
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 0.00 | × 1.500 | 0.0000 |
| Practice expense | 3.81 | × 1.065 | 4.0576 |
| Malpractice | 0.00 | × 0.551 | 0.0000 |
| Total RVUs | 4.0576 | ||
| Conversion factor | × 33.4009 | ||
Office / nonfacility rate, Alaska*$135.53
Explore RVUs, geographic factors and the full formula
Office / nonfacility
| Component | RVU | Local GPCI |
|---|---|---|
| Work | 0 | 1.5 |
| Practice expense | 3.81 | 1.065 |
| Malpractice | 0 | 0.551 |
(0 × 1.5 + 3.81 × 1.065 + 0 × 0.551) × $33.4009 = $135.53
The office and facility calculations use their respective practice-expense RVUs. The facility amount here is the physician fee, not a separate hospital or facility bill.
Q4163 billing questions
Can Q4163 be billed by itself?
No. CMS identifies it as an add-on code, so report it with the applicable primary wound procedure.
What does Q4163 identify: the product or its application?
It identifies Woundex or Bioskin product quantity. The primary procedure represents the wound service, including applicable preparation or placement.
How are units measured?
The descriptor is per square centimeter. Document the quantity used and the wound area treated.
How does Q4163 differ from Q4162?
Q4163 is for Woundex or Bioskin measured per square centimeter. Q4162 identifies the FLW versions in a volume-based unit, so the codes are not interchangeable.
What does the technical-component designation mean?
CMS classifies Q4163 as technical-component-only, with interpretation covered by a separate code.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense, and malpractice RVUs, adjusted by each locality’s geographic indices and the applicable conversion factor. Unavailable or separately priced services are labeled rather than assigned a made-up amount.
Source: RVU26D. Effective 2026-10-01 through the day before 2027-01-01.
18,253Q4160,,Nushield 1 square cm,A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,254Q4161,,Bio-connekt per square cm,A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,255Q4162,,"Wndex flw, bioskn flw, 0.5cc",C,,0.00,0.00,,0.00,,0.00,0.00,0.00,3,XXX,0.00,0.00,0.00,9,9,9,9,9,9,,33.4009,09,0,99,0.00,0.00,0.00
18,256Q4163,,"Woundex, bioskin, per sq cm",A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,257Q4164,,"Helicoll, per square cm",A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,258Q4165,,"Keramatrix, kerasorb sq cm",A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
18,259Q4166,,"Cytal, per square centimeter",A,,0.00,3.81,,3.81,NA,0.00,3.81,3.81,3,ZZZ,0.00,0.00,0.00,0,0,0,0,0,9,,33.4009,09,0,99,0.00,0.00,0.00
2,,,,,,
3Medicare Administrative Contractor (MAC),State,Locality Number,Locality Name,2026 PW GPCI (with 1.0 Floor)***,2026 PE GPCI,2026 MP GPCI
410112,AL,00,ALABAMA,1.000,0.875,0.566
502102,AK,01,ALASKA*,1.500,1.065,0.551
603102,AZ,00,ARIZONA,1.000,0.969,0.856
707102,AR,13,ARKANSAS,1.000,0.859,0.515
801112,CA,54,BAKERSFIELD,1.019,1.096,0.609