HCPCS Q4163: Skin substituteMedicare rate & RVUs

Medicare pays $127.26 for Q4163 nationally in the office. Local office rates run $109.31–$183.51.

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

What Q4163 covers

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.

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 Q4163 pays more and less

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

109 of 109 payment localities

Q4163 rates by state

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

How the Q4163 rate is calculated

Each of Q4163’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 Q4163

The CMS indicators that decide how Q4163 is paid alongside other services.

Q4163 compared with similar codes

How to choose

Q4162Wndex 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.

Q4164Helicoll

Q4164 identifies Helicoll rather than Woundex or Bioskin. Both use a square-centimeter unit, so the product supplied distinguishes the codes.

Q4158Wound matrix

Q4158 identifies Kerecis Omega3, while Q4163 identifies Woundex or Bioskin. Both are product-specific wound codes measured by square centimeter.

Codes related to Q4163

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

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