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HCPCS code Q4115: Skin substitute, alloSkin, per square centimeter2026 Medicare rate & RVUs in Arizona

Reports AlloSkin human skin allograft supplied for wound coverage when furnished with a primary wound-treatment procedure.

CMS RVU26DEffective Oct 1, 2026One payment locality

In Arizona, Medicare pays $123.31 for Q4115 in the office.

$123.31Office (non-facility)
Not available in this settingHospital or facility
−3.1%vs the national office rate ($127.26)

Check a contract rate as a % of Medicare · Q4115 nationwide

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

We’ll open Q4115 for the payment locality that covers the ZIP.

On this page 11 sections
  1. Rate in Arizona
  2. What Q4115 covers
  3. Compared with other areas
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Related codes
  8. Rate history
  9. Where it applies
  10. Billing questions
  11. Sources

What Q4115 covers

Q4115 identifies AlloSkin, a human skin allograft product supplied for wound coverage. It may be used by clinicians treating wounds that require biologic skin coverage, including chronic ulcers or surgical wounds. The surgeon, podiatrist, or wound-care clinician applies the product in an outpatient wound-care or surgical setting. This code represents the product, not the work of preparing the wound or applying the graft.

Report Q4115 for the AlloSkin product furnished, using the HCPCS unit measure of one square centimeter and documenting the product, quantity, and treated wound. Pair it with the primary wound-treatment procedure; CMS classifies it as an add-on and places payment within that procedure's global period. This is a technical-component-only code, with interpretation represented by a separate code. The documentation should identify AlloSkin specifically so it is distinguishable from other skin substitute products.

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.

How Arizona compares for Q4115

Across 109 of 109 payment localities, the office rate for Q4115 runs from $109.31 in Arkansas to $183.51 in Santa Clara County, CA. Arizona pays $123.31. The RVUs are the same everywhere; the geographic indexes change the dollars.

Q4115 in Arizona vs other payment areas
  1. Arizona · this page$123.31
  2. Los Angeles, CA · California$150.55+$27.24
  3. Washington, DC area · District of Columbia$149.91+$26.60
  4. Miami, FL · Florida$132.47+$9.16
  5. Chicago, IL · Illinois$127.89+$4.58
  6. Manhattan, NY · New York$147.87+$24.56
  7. Alaska · Alaska$135.53+$12.22

Other areas in Arizona first, then benchmark localities. Bars start at $0.

Every other payment area

Q4115 in every other Medicare payment locality
Payment localityOfficeFacility
AlabamaAlabama$111.35—
ArkansasArkansas$109.31—
Bakersfield, CACalifornia$139.47—
Chico, CACalifornia$139.47—
El Centro, CACalifornia$139.47—
Fresno, CACalifornia$139.47—
Hanford, CACalifornia$139.47—
Madera, CACalifornia$139.47—

Q4115 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.

$109.31

$161.49

Color shows the midpoint of each state’s locality range.

View every state and territory as a table
Q4115 office rate range by state
State / territoryOffice rate rangeLocalities
AK$135.531
AL$111.351
AR$109.311
AZ$123.311
CA$139.47–$183.5129
CO$135.401
CT$137.061
DC$149.911
DE$125.731
FL$121.66–$132.473
GA$113.51–$129.292
GU$144.691
HI$144.691
IA$116.441
ID$117.081
IL$116.19–$130.694
IN$117.971
KS$115.041
KY$113.131
LA$112.62–$119.752
MA$134.00–$151.952
MD$128.78–$149.913
ME$117.08–$126.112
MI$116.19–$122.802
MN$130.951
MO$109.70–$121.153
MS$109.571
MT$127.261
NC$118.731
ND$127.261
NE$117.461
NH$132.471
NJ$138.97–$147.622
NM$116.701
NV$127.381
NY$120.89–$151.315
OH$116.191
OK$113.641
OR$126.75–$141.382
PA$116.82–$132.472
PR$128.661
RI$131.461
SC$117.591
SD$127.261
TN$115.681
TX$115.80–$134.648
UT$119.621
VA$125.09–$149.912
VI$128.661
VT$125.981
WA$134.00–$156.142
WI$121.911
WV$110.591
WY$127.261

See Q4115 in every payment locality

How the Q4115 rate is calculated

Each of Q4115’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 · Q4115

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.00

0.00 RVUs× 1.000 GPCI

Practice expense3.81

3.81 RVUs× 1.000 GPCI

Malpractice0.00

0.00 RVUs× 1.000 GPCI

Adjusted RVUs

3.8100

Conversion factor

$33.4009

Medicare rate

$127.26

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

The exact Arizona inputs and CMS source lines

PPRRVU2026_Oct_nonQPP.csv

18,213

Code
Q4115
Physician work
0.00
Practice expense
3.81
Malpractice
0.00

GPCI2026.csv

6

Locality
Arizona
Physician work
1.000
Practice expense
0.969
Malpractice
0.856
Office calculation for Q4115 in Arizona
ComponentRVULocality factorAdjusted
Physician work0.00× 1.0000.0000
Practice expense3.81× 0.9693.6919
Malpractice0.00× 0.8560.0000
Total RVUs3.6919
Conversion factor× 33.4009

Office rate, Arizona$123.31

Office: (0 × 1 + 3.81 × 0.969 + 0 × 0.856) × $33.4009 = $123.31

Open Q4115 in the RVU calculator

Payment rules and modifiers for Q4115

The CMS indicators that decide how Q4115 is paid alongside other services.

CMS payment indicators · Q4115

Skin substitute, alloSkin, per square centimeter

RuleCMS valueWhat it means
Global periodZZZAdd-on code: falls within the primary procedure’s global period.
Multiple procedures0No multiple-procedure reduction.
Bilateral (modifier 50)0The 150% bilateral adjustment doesn’t apply.
Assistant at surgery (80/81/82/AS)0Not paid without supporting documentation.
Co-surgeons (62)0Not permitted.
Team surgery (66)0Not permitted.
Professional/technical3Technical component only.

Codes related to Q4115

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

Codes related to Q4115
CodeHow it relatesOffice range, Arizona
Primary code
15271Skin substitute graft, first 25 cm², trunk/limbsPrimary application procedure for skin substitute grafts on trunk, arms, or legs within its defined area range.$153.81
15275Skin substitute, face and other specified sitesPrimary application procedure for skin substitute grafts on specified head, hand, foot, or genital sites.$156.44
Used instead
Q4123AlloSkin graft, material used with graft applicationIdentifies AlloSkin RT, a distinct product variant; report the product actually furnished.$123.31
Q4116Dermal matrix, alloDerm per square centimeterIdentifies AlloDerm, a different skin substitute product.$123.31
Q4121Skin substitute, theraSkin per square centimeterIdentifies Theraskin, a different skin substitute product.$123.31

How Q4115 has changed in Arizona

Q4115 · Office / nonfacility

$123.31

Effective 2026-10-01

A rate is unavailable in one of these releases, so a change cannot be calculated.

It is unchanged from the immediately preceding available release, effective 2026-07-01.

Base rate by release · bars start at $0 · select a bar to compare

One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.

What changed, release by release

  1. January 1, 2026

    RVU26A

    No ratechanged to$123.31

    Held through RVU26B, RVU26C, RVU26D.

  2. January 1, 2013

    RVU13AR

    Earliest loaded release: No rate

    Held through RVU13B, RVU13C, RVU13D, RVU14A, RVU14B, RVU14C, RVU14D, RVU15A, RVU15B, RVU15C, RVU15D, RVU16A, RVU16B, RVU16C, RVU16D, RVU17A, RVU17B, RVU17C, RVU17D, RVU18AR1, RVU18B, RVU18C, RVU18D, RVU19A, RVU19B, RVU19C, RVU19D, RVU20A, RVU20B, RVU20C, RVU20D, RVU21A, RVU21B, RVU21C, RVU21D, RVU22A, RVU22B, RVU22C, RVU22D, RVU23A, RVU23B, RVU23C, RVU23D, RVU24A, RVU24AR, RVU24B, RVU24C, RVU24D, RVU25A, RVU25B, RVU25C, RVU25D.

Rates in every CMS release
Effective fromOfficeFacilityCMS release
2026-10-01$123.31Not available in this settingRVU26D
2026-07-01$123.31Not available in this settingRVU26C
2026-04-01$123.31Not available in this settingRVU26B
2026-01-01$123.31Not available in this settingRVU26A
2025-10-01Separate payment rules applySeparate payment rules applyRVU25D
2025-07-01Separate payment rules applySeparate payment rules applyRVU25C
2025-04-01Separate payment rules applySeparate payment rules applyRVU25B
2025-01-01Separate payment rules applySeparate payment rules applyRVU25A
2024-10-01Separate payment rules applySeparate payment rules applyRVU24D
2024-07-01Separate payment rules applySeparate payment rules applyRVU24C
2024-04-01Separate payment rules applySeparate payment rules applyRVU24B
2024-03-09Separate payment rules applySeparate payment rules applyRVU24AR
2024-01-01Separate payment rules applySeparate payment rules applyRVU24A
2023-10-01Separate payment rules applySeparate payment rules applyRVU23D
2023-07-01Separate payment rules applySeparate payment rules applyRVU23C
2023-04-01Separate payment rules applySeparate payment rules applyRVU23B
2023-01-01Separate payment rules applySeparate payment rules applyRVU23A
2022-10-01Separate payment rules applySeparate payment rules applyRVU22D
2022-07-01Separate payment rules applySeparate payment rules applyRVU22C
2022-04-01Separate payment rules applySeparate payment rules applyRVU22B
2022-01-01Separate payment rules applySeparate payment rules applyRVU22A
2021-10-01Separate payment rules applySeparate payment rules applyRVU21D
2021-07-01Separate payment rules applySeparate payment rules applyRVU21C
2021-04-01Separate payment rules applySeparate payment rules applyRVU21B
2021-01-01Separate payment rules applySeparate payment rules applyRVU21A
2020-10-01Separate payment rules applySeparate payment rules applyRVU20D
2020-07-01Separate payment rules applySeparate payment rules applyRVU20C
2020-04-01Separate payment rules applySeparate payment rules applyRVU20B
2020-01-01Separate payment rules applySeparate payment rules applyRVU20A
2019-10-01Separate payment rules applySeparate payment rules applyRVU19D
2019-07-01Separate payment rules applySeparate payment rules applyRVU19C
2019-04-01Separate payment rules applySeparate payment rules applyRVU19B
2019-01-01Separate payment rules applySeparate payment rules applyRVU19A
2018-10-01Separate payment rules applySeparate payment rules applyRVU18D
2018-07-01Separate payment rules applySeparate payment rules applyRVU18C
2018-04-01Separate payment rules applySeparate payment rules applyRVU18B
2018-01-01Separate payment rules applySeparate payment rules applyRVU18AR1
2017-10-01Separate payment rules applySeparate payment rules applyRVU17D
2017-07-01Separate payment rules applySeparate payment rules applyRVU17C
2017-04-01Separate payment rules applySeparate payment rules applyRVU17B
2017-01-01Separate payment rules applySeparate payment rules applyRVU17A
2016-10-01Separate payment rules applySeparate payment rules applyRVU16D
2016-07-01Separate payment rules applySeparate payment rules applyRVU16C
2016-04-01Separate payment rules applySeparate payment rules applyRVU16B
2016-01-01Separate payment rules applySeparate payment rules applyRVU16A
2015-10-01Separate payment rules applySeparate payment rules applyRVU15D
2015-07-01Separate payment rules applySeparate payment rules applyRVU15C
2015-04-01Separate payment rules applySeparate payment rules applyRVU15B
2015-01-01Separate payment rules applySeparate payment rules applyRVU15A
2014-10-01Separate payment rules applySeparate payment rules applyRVU14D
2014-07-01Separate payment rules applySeparate payment rules applyRVU14C
2014-04-01Separate payment rules applySeparate payment rules applyRVU14B
2014-01-01Separate payment rules applySeparate payment rules applyRVU14A
2013-10-01Separate payment rules applySeparate payment rules applyRVU13D
2013-07-01Separate payment rules applySeparate payment rules applyRVU13C
2013-04-01Separate payment rules applySeparate payment rules applyRVU13B
2013-01-01Separate payment rules applySeparate payment rules applyRVU13AR

Price Q4115 for an earlier date of service

Where the Arizona rate applies

Arizona is a Medicare payment area, not a city. Our Census mapping connects it to 467 cities and communities in Arizona. Some span more than one payment area; confirm with the service ZIP.

  • Aguila
  • Ajo
  • Ak Chin
  • Ak-Chin Village
  • Alamo Lake
  • Ali Chuk
  • Ali Chukson
  • Ali Molina

Browse all communities in Arizona

Q4115 billing questions

Is Q4115 the code for applying the graft?

No. Q4115 identifies the AlloSkin product; report the applicable primary procedure for wound preparation and graft application.

What unit does Q4115 use?

The unit is one square centimeter. Document the AlloSkin quantity furnished and reported.

Can Q4115 be reported by itself?

No. CMS classifies it as an add-on code that must be billed with a primary procedure, with payment within that procedure's global period.

What documentation supports Q4115?

Record the product as AlloSkin, the quantity furnished, the wound treated, and the primary wound-treatment procedure performed.

How does Q4115 differ from Q4123?

Q4115 identifies AlloSkin, while Q4123 identifies AlloSkin RT. Report the code matching the product actually furnished.

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
RVUs for Q4115PPRRVU2026_Oct_nonQPP.csv, line 18,213 (RVU26D)
Geographic factors for ArizonaGPCI2026.csv, line 6 (RVU26D)

Open CMS sourceHow we calculate rates

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