HCPCS Q4320: Wound graftMedicare rate & RVUs

Q4320 reports Pellograft by square centimeter when the graft material is supplied for application to a wound during a qualifying primary procedure.

CMS RVU26DEffective Oct 1, 2026109 payment localities

Medicare pays $127.26 for Q4320 nationally in the office. Local office rates run $109.31–$183.51.

Medicare rate · Q4320

Wound graft

Swap in your local Medicare rate.

Work RVUs
0
Total RVUs
3.81
Global days
ZZZ

National rate · 2026

$127.26

Office setting, before claim adjustments.

See every locality for Q4320 → · Billed by an NP, PA or therapist? →

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 10 sections
  1. Medicare rate
  2. What Q4320 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What Q4320 covers

Q4320 identifies Pellograft supplied for wound coverage, measured by square centimeter. It is relevant when a clinician applies this graft material to a wound, such as a diabetic foot or venous leg ulcer. Wound-care physicians, surgeons, and podiatrists may provide these services in office, clinic, or hospital settings. The application procedure addresses placement of the graft; Q4320 identifies the Pellograft product used.

Report the product quantity in square centimeters and retain documentation identifying Pellograft and the amount used. Pair Q4320 with the appropriate primary application procedure; it is an add-on code and is paid within that procedure’s global period. CMS classifies Q4320 as technical-component-only, with interpretation covered by a separate code. The record should support both the wound treatment and the reported product quantity.

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 Q4320 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 payment localities

$109.31 to $183.51

$109.31$146.41$183.51
One dot per payment locality, office / nonfacility. Hover a dot to see the locality; select it to open that rate.

109 of 109 payment localities

Q4320 office and facility rates by payment locality
Payment localityOfficeFacility
Alabama$111.35Unavailable
Alaska*$135.53Unavailable
Arizona$123.31Unavailable
Arkansas$109.31Unavailable
Atlanta$129.29Unavailable
Austin$134.64Unavailable
Bakersfield$139.47Unavailable
Baltimore/Surr. Cntys$136.55Unavailable
Beaumont$115.80Unavailable
Brazoria$126.11Unavailable

Q4320 rates by state

Office rate range in each state. Select a state to see its payment localities.

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
Q4320 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

How the Q4320 rate is calculated

Each of Q4320’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 · Q4320

RVUs × geographic indexes × conversion factor

Swap in your local Medicare rate.

Work 0.00Practice expense 3.81Malpractice 0.00

3.8100 adjusted RVUs×$33.4009 conversion factor=$127.26

All indexes start at 1.000 (the national rate). Enter a ZIP or drag a slider.

Payment rules and modifiers for Q4320

The CMS indicators that decide how Q4320 is paid alongside other services.

CMS payment indicators · Q4320

Wound graft

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.

Q4320 compared with similar codes

Compare codes

Q4320 vs Q4321 vs Q4322 vs 15271: national Medicare rates

Swap in your local Medicare rate.

  • Q4320
    Wound graft · 0 wRVU
    $127.26
  • Q4321
    Renograft graft · 0 wRVU
    $127.26+$0.00
  • Q4322
    Caregraft · 0 wRVU
    $127.26+$0.00
  • 15271
    Skin substitute graft · 1.46 wRVU
    $157.99+$30.73

How to choose

Q4321Renograft graft
Q4321 identifies Renograft, while Q4320 identifies Pellograft. Select according to the product actually supplied, not the wound size.
Q4322Caregraft
Q4322 identifies Caregraft rather than Pellograft. Both are product-specific codes with a square-centimeter unit basis.
15271Skin substitute graft
15271 reports the qualifying graft-application service for its specified sites and initial area; Q4320 reports the Pellograft material used with a primary procedure.

Q4320 billing questions

When should Q4320 be selected instead of another wound-graft product code?

Use Q4320 when the product supplied is Pellograft. Other product codes identify different named graft products, even when the unit basis is also square centimeters.

Can Q4320 be reported by itself?

No. CMS identifies it as an add-on code, so report it with the appropriate primary procedure for applying the graft.

How should units be determined?

The code is measured per square centimeter. Document the Pellograft quantity used in square centimeters; wound dimensions alone do not establish the amount of product reported.

Is interpretation included in Q4320?

CMS classifies Q4320 as technical-component-only and specifies that a separate code covers interpretation.

How does the primary procedure affect payment?

Q4320 is paid within the primary procedure’s global period. It must be reported with that primary procedure rather than as a standalone 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

Show the CMS file lines behind this rate
RVUs for Q4320PPRRVU2026_Oct_nonQPP.csv, line 18,407 (RVU26D)

Open CMS sourceHow we calculate rates

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