HCPCS code Q4331: Wound matrix, axolotl, per square centimeter2026 Medicare rate & RVUs in Rhode Island

In Rhode Island, Medicare pays $131.46 for Q4331 in the office.

Check a contract rate as a % of Medicare · Q4331 nationwide

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

What Q4331 covers

Q4331 identifies Axolotl graft, a biologic wound matrix used as a material in wound care. Clinicians may apply it to a prepared wound bed during treatment of a chronic or otherwise difficult-to-heal wound, including in an outpatient wound clinic or a surgical setting. The code represents the specific Axolotl product, not the clinician’s wound assessment or the application service itself.

Report the documented square-centimeter quantity with the primary procedure for applying the graft; CMS treats Q4331 as an add-on, paid within that procedure’s global period. Keep records showing the product used, wound treated, and quantity applied. CMS assigns no physician work RVUs to this product code and classifies it as technical-component-only, with interpretation covered by a separate code. The CMS classification should be followed when determining how the service is represented on the claim.

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 Rhode Island compares for Q4331

Across 109 of 109 payment localities, the office rate for Q4331 runs from $109.31 in Arkansas to $183.51 in Santa Clara County, CA. Rhode Island pays $131.46. The RVUs are the same everywhere; the geographic indexes change the dollars.

Every other payment area

Q4331 rates by state

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

See Q4331 in every payment locality

How the Q4331 rate is calculated

Each of Q4331’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.

Payment rules and modifiers for Q4331

The CMS indicators that decide how Q4331 is paid alongside other services.

Codes related to Q4331

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

How Q4331 has changed in Rhode Island

Price Q4331 for an earlier date of service

Where the Rhode Island rate applies

Rhode Island is a Medicare payment area, not a city. Our Census mapping connects it to 36 cities and communities in Rhode Island. Some span more than one payment area; confirm with the service ZIP.

• Ashaway
• Bradford
• Carolina
• Central Falls
• Charlestown
• Chepachet
• Clayville
• Cranston

Browse all communities in Rhode Island

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

Open CMS sourceHow we calculate rates