HCPCS code Q4300: Wound product, acesso TL, per square centimeter2026 Medicare rate & RVUs in California
Report Q4300 for each square centimeter of Acesso TL furnished with a qualifying wound application procedure, not as a stand-alone service.
Medicare pays $139.47–$183.51 for Q4300 in the office in California, from Bakersfield, CA to Santa Clara County, CA. 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.
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On this page 9 sections
What Q4300 covers
Q4300 identifies the Acesso TL product supplied for wound coverage, measured by square centimeter. Wound-care clinicians may use it when treating an appropriate wound with a skin-substitute product; the associated application procedure reflects the clinician’s work placing the material. The claim should distinguish the Acesso TL product from other wound products and identify the wound and treatment performed.
Report Q4300 only with a primary procedure, such as the applicable skin-substitute application code selected for the wound’s site and treated area. Units represent the documented square centimeters furnished. Keep the product record, amount used, wound measurements, and application details to support the reported units and pairing. CMS identifies Q4300 as a technical-component-only code, with interpretation covered by a separate code. Payment for this add-on falls within the primary procedure’s global period.
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 Q4300 pays more and less in California
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
29 payment localities
$139.47 to $183.51
29 of 29 payment localities
| Payment locality | Office | Facility |
|---|---|---|
| Bakersfield, CA | $139.47 | Unavailable |
| Chico, CA | $139.47 | Unavailable |
| El Centro, CA | $139.47 | Unavailable |
| Fresno, CA | $139.47 | Unavailable |
| Hanford, CA | $139.47 | Unavailable |
| Los Angeles, CA | $150.55 | Unavailable |
| Madera, CA | $139.47 | Unavailable |
| Marin County, CA | $179.43 | Unavailable |
| Merced, CA | $139.47 | Unavailable |
| Modesto, CA | $139.47 | Unavailable |
| Napa, CA | $167.73 | Unavailable |
| Oxnard, CA | $150.42 | Unavailable |
| Redding, CA | $139.47 | Unavailable |
| Rest of California | $139.47 | Unavailable |
| Riverside, CA | $139.47 | Unavailable |
| Sacramento, CA | $148.00 | Unavailable |
| Salinas, CA | $147.49 | Unavailable |
| San Benito County, CA | $183.51 | Unavailable |
| San Diego, CA | $152.20 | Unavailable |
| San Francisco, CA | $179.43 | Unavailable |
| San Luis Obispo, CA | $144.95 | Unavailable |
| Santa Clara County, CA | $183.51 | Unavailable |
| Santa Cruz, CA | $154.62 | Unavailable |
| Santa Maria, CA | $148.38 | Unavailable |
| Santa Rosa, CA | $156.27 | Unavailable |
| Stockton, CA | $139.47 | Unavailable |
| Vallejo, CA | $167.73 | Unavailable |
| Visalia, CA | $139.47 | Unavailable |
| Yuba City, CA | $139.47 | Unavailable |
How the Q4300 rate is calculated
Each of Q4300’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 · Q4300
RVUs × geographic indexes × conversion factor
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.
Payment rules and modifiers for Q4300
The CMS indicators that decide how Q4300 is paid alongside other services.
CMS payment indicators · Q4300
Wound product, acesso TL, per square centimeter
| Rule | CMS value | What it means |
|---|---|---|
| Global period | ZZZ | Add-on code: falls within the primary procedure’s global period. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| 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 | 3 | Technical component only. |
Q4300 compared with similar codes
Compare codes · National
4 codes, side by side
How to choose
- Q4311Acesso graftPer square centimeter
- Q4311 identifies Acesso, while Q4300 identifies Acesso TL. Distinguish them by the product supplied, not just the shared per-square-centimeter unit.
- Q4312Wound productAcesso AC, per square centimeter
- Q4312 identifies Acesso AC. Use Q4300 only when the product furnished is Acesso TL.
- 15271Skin substitute graftFirst 25 cm², trunk/limbs
- Q4300 reports the Acesso TL product by area; 15271 reports the application procedure for qualifying trunk, arm, or leg wounds within its area range.
Q4300 billing questions
Can Q4300 be reported by itself?
No. CMS identifies Q4300 as an add-on that must be billed with a primary procedure, such as the appropriate skin-substitute application code.
How are units determined?
The descriptor is per square centimeter. Document the amount of Acesso TL furnished and the wound area treated to support the units reported.
How does Q4300 differ from Q4311?
Both descriptors identify a product billed per square centimeter, but Q4300 names Acesso TL and Q4311 names Acesso. Report the code matching the specific product furnished.
Does Q4300 include interpretation?
No. CMS classifies Q4300 as technical-component-only; a separate code covers interpretation.
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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